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DIVISION OF FORESTRY.

| EXPERIMENTAL TREE PLANTING
WN THE PLAINS.

BY
CHARLES A. KE PFER, =e ae
Assistant Chief of the Division.
PREPARED UNDER TILE DIRECTION OF B. E. FERNOW,
“_ CHIEF OF THE DIVISION OF FORESTRY.
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BULLETIN No. 18.

ees PE RPAR EMENT OF AGRICULTURE,
DIVISION OF FORESTRY. .

EXPERIMENTAL TREE PLANTING
IN THE PLAINS.

BY

CLEAR ES A. KEEFER,
Assistant Chief of the Division.

PREPARED UNDER THE DIRECTION OF B. E. FERNOW,
COTEE OF THE DIVISION OF FORESTRY.

WASHINGTON :
GOVERNMENT PRINTING OFFICE,

SIRO) coher

PERE OR TRANSMITTAL,

U. 8S. DEPARTMENT OF AGRICULTURE,
DIVISION OF FORESTRY,
Washington, D. C., March 31, 1898.

Sir: I have the honor to submit herewith for publication a bulletin
prepared by Mr. Charles A. Keffer, assistant chief, on Tree Planting in
the Western Plains, being an account of the experimental plantings
made by the U.S. Department of Agriculture.

The direction of this work in detail has been entirely in the hands of
Mr. Keffer, whose experience with the conditions of the region for which
the experiments were conducted fitted him specially for the task.

The discussion of the principles underlying such planting, which
accompany this report, it is hoped will prove an aid to intending tree
growers, not only in the West but elsewhere.

Respectfully,
B. KE. FERNOW,

Hon. JAMES WILSON, Chief.

Secretary.
3

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PLATES.

Page.
Pearr J. Nebraska plantation; Bla tpl. sees ee eee eee (Frontispiece).
II. Nebraska plantation, Plat 22 2222s52 = 2 eae ee eee ee eee 52
III. Colorado plantation. ..-.- Be ee ele ee ie OL ee oS 60

IV. Fig. 1. Scotch Pine in South Dakota plantation. Fig. 2. South Dakota
plantation: ..2.<0 6220. hoe Soca Sete Soe eee eee 64
V. Utah plantation « 222322052 toa oe So Pan ee eee ee 78

TEXT FIGURE.

Fic. 1.—Diagram of underplanting in) Kansas 2222 oe. ee oe ee eee eee ae 39

6

INTRODUCTION.

Forestry has to deal with forests. Forests subserve two purposes:
supply of a most necessary raw material, and amelioration of the con-
ditions of climate and water flow.

In the semiarid and arid regions not only is tree growth established
with more difficulty and expense, but except where irrigation can be
had in full supply the trees will grow slowly after the vigorous juvenile
period of twenty or thirty years, and remain of small dimensions, short
bodied, and fit only for firewood.

Protection, then, amelioration of climate, is the principal object of
forest planting in these regions. Wood supply is the secondary con-
sideration.

The forests which furnish the enormous quantities of wood material
used in this country, amounting in value to $1,000,000,000 in round
numbers per year, grow in the humid regions, and will always grow
there, because they are more favorable to tree growth, developing
larger and better timber, more rapidly and cheaply, and that, too, on
nonagricultural soil.

The first interest, namely, our lumber supply, being so infinitely more
important, most of the attention of the Division of Forestry was immedi-
ately taken up with problems aftecting the rational use of our existing
forest resources and their recuperation, somewhat to the exclusion of
the questions which interest the tree grower of the West.

The only way in which the division could have made itself useful in
the latter direction seemed to be in field demonstration, namely, by
establishing experimental plantings in which the adaptation of species
to the climate and methods of using the same might be tested and
object lessons exhibited. Practical difficulties of various kinds and
deficiency of funds prevented the inauguration of such work until a
plan of cooperation with the State agricultural experiment stations
removed at least a part of these difficulties, and the abandonment of
other important work furnished sufficient means to attempt this field
work. This has now been carried on for three years under many draw-
backs, the most detrimental of which is the difficulty of securing
properly selected satisfactory plant material delivered in good condi-
tion, and of adequate personal superintendence at the various stations
during planting time. ?

While the professors of horticulture who have kindly volunteered
to take charge of these plantations unquestionably devote themselves

aj

8

to this voluntary duty as zealously as to any other, and have our sin-
cerest thanks for their interest in the same, we are aware that, espe-
cially at the planting season, they are so overcrowded with work that
only a passing attention can be given to this outside matter; and at the
same time wherever directions for field work are to be given from a
central office far away from the 10 or 12 stations, all differently situ-
ated climatically, the full measure of success can not be expected.
The difficulties surrounding the procurement of plant material have
been discussed at length by Mr. Keffer in this report.

The objects of these experimental plantings may be briefly stated as
follows:

1. Testing adaptability of various native and exotic species in the
several regions.

2. Finding methods of establishing such species as seem well
adapted, but are difficult to start.

3. Testing the behavior of various species in mixture, and their
influence upon one another, as a basis for selecting proper mixtures
(mixed planting being recognized as superior).

4, Developing methods of cultivation, more successful or cheaper
than those in use.

5. Finding methods of securing plant material most cheaply.

6. Testing influence upon hardiness of locality from which the seed
is secured.

7. Demonstrating forestry methods in tree planting.

In spite of the difficulties mentioned, the experiments have been
fairly successful and instructive and will become more so as the trees
grow. Nor should it be overlooked that, in experiments, failures are
just as instructive—provided their cause is discovered—as successes.

More liberal appropriations to place this work upon an adequate
basis, commensurate with the interests involved, would produce more
satisfactory results.

B. E. FERNOW,
Chief Division of Forestry.

EXPERIMENTAL TREE PLANTING IN THE PLAINS.

INTRODUCTION.

An effort has been made in this bulletin to bring together a record
of experimental plantings, not yet sufficiently extended to be more
than suggestive, which have been conducted by the Department of
Agriculture during the last two years. It seemed in this connection
desirable to give also a brief discussion of conditions affecting tree
growth, with special reference to those encountered in the Western
plains, where the plantations are mostly located.

The forestless region of America ineludes all the States between the
Mississippi River north of the Ozark Mountains and eastern Texas,
and the Rocky Mountains, together with the plateau west of the
Rocky Mountains. The possibilities of forest growth in this vast area
are yet to be proved. Roughly speaking, any species that thrive in the
adjacent wooded regions can be grown in Iowa, the Red River Valley
of Minnesota and North Dakota, the Sioux Valley of South Dakota
and the eastern counties of Nebraska, and in the more southern States.
We know that difficulties of cultivation increase rapidly as one goes
westward, but we can not say where the western limit of successful
tree culture is. We can not even define the limits of successful agri-
culture in the plains, for with increased facilities for irrigation splen-
did crops are now produced where only a few years ago it was thought
desert conditions would forever prevail.

It is admitted that forest planting, as a financial investment, will
probably be profitable on the plains only in a limited degree. Favor.
able sites may enable the profitable raising of fence posts and other
specialized tree crops, but the growing of timber on a commercial scale
can hardly be expected. The quick and sure returns of agricultural
crops warrant the farmer in supporting expensive irrigation works in
the semiarid West, but we can hardly foresee a time when even an
approximate expenditure for the maintenance of a forest crop would
prove profitable except for the protection afforded by it. While this is
probably true, there yet remains for demonstration the limitations of
tree culture within the possibilities of the Western farmer—what spe-
cies are adapted to his land; what methods give promise of success;
what can he do to improve conditions and so make possible not only
the growth of useful timber, but also a ereater variety of agricultural
operations. As has been intimated, the difficulties of tree growing

9

10

increase greatly as one proceeds northward and westward from the
eastern forest area. In the eastern border of the plains the planter
has almost as great latitude in his choice of varieties as has the dweller
within the forest, and he may select timbers cf the highest economic
value, choosing several kinds, each adapted to specific uses, and plant-
ing with them others whose only purpose is to promote the growth of
his select trees. AS we go westward the possibilities of choice become
more and more restricted, until in western Kansas and Nebraska, in
the upper Missouri Valley and the high plains of Texas, New Mexico,
and Colorado very few species can be relied upon, and these will have
to be nurtured and cared for to a degree not dreamed of by the East-
ern farmer. The exact limits of choice have yet to be determined.
Thus far we must deal largely with generalities and inferences, which
become more and more problematical as we proceed westward.

The experimental plantings herein described in detail are given not
only as a record of the beginnings of an important work, but as indi-
cating what are believed to be useful mixtures of trees for planting in
the West. Sufficient time has not elapsed, even in the oldest plantings
described, for final conclusions to be drawn; but the notes on kinds will
be found of interest in connection with the experiments, and the whole
is believed to afford a basis for selection of trees for the various States
included in the treeless area.

While this bulletin has to do primarily with Western planting, it may
be found a safe guide in many directions for forest planting within the
timbered regions of the country, especially as to general principles
involved. Experiments in planting in cut-over lands in the pineries of
Minnesota and Pennsylvania have been begun by the Department, but
are not yet sufficiently advanced to warrant even a progress report.

CONDITIONS AFFECTING TREE GROWTH.

In common with all plant life, trees require a certain amount of heat,
light, and moisture for their development. These elements are so inter-
dependent in their effect upon tree growth that it is almost impossible
to consider one without keeping in mind the influence which the other
two are constantly exerting. Thus, if we discuss the effect of heat upon
tree growth, we are at once reminded that the action of heat and light
are inseparable and that the result upon the same species in a moist
and a dry region is quite different. It must be remembered that these
elements are tiever dissociated in their influence on plant growth.

Most trees have a wide range of endurance of heat, light, and mois-
ture. The Red Cedar is a striking illustration of adaptability to a great
range of conditions. It is found in the swamps of southern Florida,
furnishing wood for pencils; on the dry, exposed foothills of the Rocky
Mountains, where it is reduced to a mere shrub; along the Platte

tiver Valley in Nebraska, in the northern forests of Maine, and reaches
its best development in the limestone soils of eastern Tennessee—an

al

immense range of conditions, illustrating well the possibility of adap-
tation which a single species may have.

All species possess to a greater or less degree the power of with-
standing varying conditions, but for each there is an ascertainable
degree of heat (and presumably of moisture and light) at which it grows
best. In tree culture the character of the soil is important principally
(one might say only) in so far as it affects the amount of moisture and
heat available for the trees; and the lay of the land—exposure—is also
to be considered principally with reference to heat, light, and moisture.

HEAT.

The heat requirement of plants in the open can be controlled to only
a Slight degree by the cultivator. He may frequently guard against
frost by care in the selection of a site for the plantation, and the evil
effects of hot winds may sometimes be avoided in the same way; but
this is less true in the plains, where there are relatively smaller differ-
ences in the elevation of the iand than within the forested area.

As a rule, species must from the first be sufficiently hardy to with-
stand the extremes of heat and cold to which they will be subjected
where planted. Hardiness is usually regarded as the ability of a
species to withstand cold, but it is quite as important to consider also
its heat resistance. The Butternut (Juglans cinerea) is not generally
hardy in the plains, though native along the streams of lowa and
Minnesota as far north as Minneapolis. It suffers from sun scald in
plantations, and hence can not be considered hardy. The Catalpa and
Russian Mulberry, while successful in eastern Kansas, fail in the west-
ern part of that State in much the same way that they do in northern
Nebraska, though the winter climate in western Kansas is but little,
if any, colder than that of the eastern part of the State. Light and
moisture evidently have an influence in determining hardiness, as well
as heat; in this, as in the rate of growth, all three factors are important
and can not be dissociated. Classified with regard to their ability to
endure cold. the species usually available for planting in the West
would stand about as follows, the hardiest being named first:

First group.—Aspen, White Spruce, Yellow Birch, Sweet Birch, Jack
Pine, White Pine, Red Pine, Norway Spruce, Red Cedar, Scotch Pine,
Austrian Pine, White Elm, Cottonwood, Boxelder, Green Ash (for North
Dakota and northern Minnesota).

Second group.—Rock Pine (Bull Pine), Douglas Spruce, Hackberry,
White Willow, Black Cherry, Bur Oak, Red Oak, White Ash, Silver
Maple (for South Dakota and northern Nebraska).

Third group.—Chestunut, Black Walnut, White Oak, Cow Oak, Hick-
ory, Honey Locust, Kentucky Coffee Tree, Black Locust, Catalpa,
Russian Mulberry, White Fir (for south Nebraska and Kansas).

Fourth group.—Pecan, Osage Orange, Shortleaf Pine, Mesquit,
Chinaberry (for Oklahoma and Texas).

12

Many of the more northern forms named, though not all, will succeed
in the more southern localities.

Many more species, both native and introduced, may occur to the
reader, but these have come within the observation of the writer and are
classified from this standpoint. It must be remembered that light and
moisture conditions will greatly influence the action of species, as well
as resistance to cold. In general, it may be expected that as one goes
westward the conditions affecting growth are more severe, so that
species which succeed in the eastern part of the plains may fail entirely
in eastern Colorado.

Trees that are not quite hardy while young can sometimes be grown
where success would otherwise be impossible by planting them among
others of a larger size which may have been set a few years previously,
thus affording a slight protection for the more delicate kinds. Several
of our most useful species are thus subject to injury from frost during
their infancy, becoming quite hardy after the first few years. Even
the hardiest species will occasionally suffer badly or be entirely killed
by late frosts. At Brookings, S. Dak., almost all the European Larch
trees in a plat numbering several hundred were killed by a heavy frost
after the leaves were one-third grown. The trees which survived
required two years to recover their normal condition. Frost injury to
foliage is common to all species in the Northwest, where even the Aspen
is not exempt in early spring before the young growth becomes
hardened. —

A lack of heat affects the growth of trees principally in dwarfing
them where they are not killed outright. The Russian Mulberry, which
is little more than a shrub in the southern counties of South Dakota,
where it is always killed back in cold winters, becomes a good-sized
tree in the Arkansas Valley. Bur Oak, one of the largest of its genus
as grown in Kentucky and Missouri, presents a stunted appearance in
the forests of Minnesota. On the other hand, it has been observed
that the Boxelder as grown at Yankton, 8. Dak., is larger and more
vigorous than the same species at Hutchinson, Kans. The trees in
both sites are in bottom land where they have a plentiful supply of
moisture. This indicates that too much heat may have a dwarfing
tendency the same as insufficient heat. This dwarfing may be turned
to good advantage by the grower in his selection of species for mixed
planting. Usually in the choice of nurse trees a species is selected
that will grow rapidly during the first few years, so as the better to
protect the youth of its more delicate nurslings, and then more slowly,
so that the protected trees may forge ahead and have the full benefit
of all the light for their crowns. It will be for such secondary species
only that advantage can be taken of the effects of cold upon the tree
growth, and even here other kinds can be found which are not thus
harmed, and would presumably be equally good for the purpose in
view.

- | 13

It should be said that too much heat is quite as objectionable as a
too low temperature. Of species not adapted to high temperatures the
Boxelder, Aspen, Yellow and Sweet Birch, the Spruces, Larches, and
Northern Pines and Hemlock may be mentioned.

LIGHT.

It may be safely assumed that all species of trees make their stron-
gest growth when in the enjoyment of full sunlight, quite free from the
shade of their fellows. While this is true, certain species can endure
more shade than others, some even being able to pass their entire
lives in comparatively dense shade. Almost if not quite all trees can
withstand more shade during the first few years of their lives than
subsequently; indeed, to some, notably the conifers, such protection is
necessary during their infancy. This variability in the amount of
shade a species can withstand has given rise to the expressions ‘ light
demanding,” applied to trees which require full light for their develop-
ment, and ‘*shade enduring,” which are species that can grow for a
longer or shorter period in the shade of others. The Cottonwood and
the Scotch Pine are good examples of light-demanding trees, and the
Beech and Hemlock of shade enduring.

The relative amount of light required by a species changes with heat
and moisture; thus in a moist, warm soil an increased amount of shade
may be endured and permit the assimilation of the greater amount
of food available. One may have striking examples of the interrelation
of heat, light, and moisture in the storage of such ornamental plants
as the Oleander through winter. These plants are grown in large pots
or tubs, and they may be safely kept in a comparatively dark, cool
cellar, if at the same time they be given but very little water. If too
much moisture be given, the plants will rot, and if they be kept too
warm a long spindling growth will result that will weaken the plant
almost beyond recovery. If the storage room be light, an increased
amount of both heat and moisture will be necessary to keep them
healthy.

Because certain species, such as the flowering Dogwood, Beech, Sugar
Maple, and Hemlock of the Appalachian region, are found to endure for
long periods in the shade of other trees, like the oaks and pines, it
must not be assumed that the shade is necessary to their best growth.
Neither is it a reasonable inference that the Hemlock can be grown
only in the shade because of the disastrous effect upon Hemlock of the
removal of associated species. In this case it is the sudden increase of
light and the inability of the species to adjust itself to new conditions
that frequently results in the death of the Hemlock. Were the pines
and hardwoods thinned out gradually, affording a slow change extend-
ing over a period of years, the Hemlocks Would doubtless be benefited
by the increased light.

14

Hemlock is much more influenced by moisture conditions than by
light, and it seeks northern slopes more because of their moisture than
because of their coolness. In anumber of city parks where the Hem-
lock is grown in isolated specimens as an ornamental tree the fact that
it succeeds admirably in full sunshine is thoroughly established. So,
too, isolated specimens of the flowering Dogwood, the Beech, and other
shade-enduring species prove that these trees are able to endure shade
better than their fellows, not that they thrive less well in full light.

When trees of equal light requirement are planted together the
struggle for light among them results in more rapid thinning than
where light-demanding and shade-enduring species are mixed. If the
single kind used be light-demanding, weeds and grass soon gain a foot-
hold and rob the soil of much of the moisture which otherwise would
be saved to the trees. Illustrations of this are common in the Cotton-
wood plantations of the West. The Cottonwood is a thin-foliaged,
light-demanding species, which does not shade the soil enough to pre-
vent grass growth even where planted close. I have seen plantations
of it in South Dakota where the trees were 40 feet high, and culti-
vation was still necessary to keep the weeds down and conserve the
soil moisture.

In making a grove or plantation, varieties of different light require-
ment should be mixed together, and varieties of equal light requirement
should not be mixed. Illustrations of this law abound in wild growths.
The Sugar Maple and the Beech are shade-enduring trees, and through-
out the Northeastern States they will be found growing well in the
shade of such species as White Ash, Black Walnut, and the Oaks and
Birches. In even greater degree Hemlock is shade-enduring and is
usually found as a lower growth, or ‘‘second story,” with White and
Red Pine towering above.

In the West the only native woods occur along the streams, and the
difference in light requirement is less pronounced than in the heavily
forested region. All trees there seem more intolerant of shade. Pos-
sibly there are fewer cloudy days and the woods are more open, thus
surrounding the trees throughout life with more light. But even in
the Western woodlands a difference in light requirement is apparent
and may be used advantageously by the planter. The Boxelder, Mul-
berry, and White Elm withstand shade better than the Black Walnut,
Green Ash, and Black Locust. The Red Cedar, White Fir, and White
Spruce endure more shade than the Pines.

The change in light requirement that comes with age is of great
practical importance to the planter, as it enables him to provide shelter
necessary in youth to certain species which are, nevertheless, intolerant
of shade as they approach maturity. The Bur Oak is decidedly a light-
demanding species, but during the first ten years it may be safely sur-
rounded by dense-foliaged neighbors, and, indeed, it will be benefited
for au even longer period by receiving light only directly overhead.

165)

Erect growth will result, with very few lateral branches, thus forming
from the first the clean, straight trunk so necessary to high quality in
timber.

The Catalpa, though not a shade-enduring tree, retains its lateral
branches with such persistence as to require dense-shading nurses to
assist it in shedding them. The Scotch Pine, when grown in full sun-
shine and with plenty of room, as in parks or lawns, seldom forms a
straight trunk, but usually divides into heavy branches near the
ground, thus making its timber of little value. Close-shading neigh-
bors will correct this fault and result in a straight stem, from which
the lower laterals soon fall. Care must be exercised with all the heavy-
branched conifers, such as the Scotch, Austrian, Rock (Bull), and
Red Pines, not to overtop them with shading trees. Tliey are benefited
by side shade, and even that must be reduced as the trees advance;
but they are intolerant of shade overhead. The White Pine will endure
more shade during youth than the heavier branched Pines named, but
it also requires unobstructed light at the top after, say, seven to ten
years, and needs full sunshine as it approaches maturity.

Indeed, as was said at the beginning of this chapter, all trees are
benefited by full light, viewed from the standpoint of growth. When
the use to be made of their timber is considered, however, it may be
added that all trees will profit by the formative influence of close plant-
ing with shading neighbors that will prevent the light from reaching
the lower branches as the trees develop. In the absence of light the
foliage is unable to do its work, the branches die from Jack of nourish-
ment, and within a few years fall away. The upper part of the crown,
meanwhile, is elongated in an effort to reach full light, and thus the stem
grows straight and tall, and all the wood laid on the trunk is free from
knots. After the stem is well formed additional light should be given
the best trees by thinning out the inferior species or specimens, and
thereafter increased volume growth will result.

Relative height growth.—In determining rules for mixed planting, the
effect of light upon tree growth is intimately associated with the
relative height growth of various species.

Not only has each species an average height in maturity, enabling
us to make a classification on this basis (White Pine, Tulip, and White
Oak being high trees as compared with Boxelder and Mulberry, or
Wild Plum and Scarlet Haw), but the growth in height ismuch greater
at one period than at another. Generally speaking, all species make
their principal height growth during the earlier part of their lives, the
increase in volume of usable material being greater thereafter. But
during this time of rapid height growth there is much diversity in the
action of species. The White Spruce is very slow in growth during
the first years, and its growth thereafter, though much more rapid,
never equals that of Scotch and White Pine. The Colorado Blue Spruce
is much slower than White Spruce at all stages of its development. As

16

observed in nurseries in the lake region, the Douglas Spruce requires
about ten years in which to form a leader, during which time it will
have grown about 2 feet high; thereafter 1t resembles the Norway
Spruce in its development. Red Cedar grows well from the first,
though never a rapid grower as compared with White Pine at its best.

Among the pines that seem especially adapted to the plains the Rock
(Bull) Pine is a very slow grower during the first five years and seems
never to make as rapid height growth as the Scotch Pine. Scotch and
Austrian Pine are similar in growth, the Scotch being a little :more
rapid; both are better growers than either Rock or White Pine during
infancy, but the White Pine under favorable conditions surpasses them
at its most rapid period of growth. The White Pine grows slowly in
its wild state for the first seven years, then with increasing rapidity to
about the thirtieth year, then more slowly, but still at a good rata, to
about the eightieth year, by which time the principal height growth
will have been attained. The Bur Oak is likewise slow up to about the
tenth year, and it never grows as rapidly in height as does the White
Pine at its best, but it is a persistent grower over a long period. The
Green Ash is a tree of comparatively slow growth, but it mai: tains
about the same rate from the first until it has made its principal | sight
growth. The White Elm is more rapid than Ash or Oak during its
first years, and it also continues a vigorous height growth until it
approaches maturity. The Cottonwood is a very rapid grower from
the first until maturity, as short-lived trees are apt to be. The Box-
elder grows with great rapidity until 5 or 6 years of age, and makes
its principal height growth by the thirtieth year. It is a medium to
small tree when mature. The Catalpa and Black Locust are among
the most rapid growing trees during the first few years from seed, but
after the tenth year they grow much more slowly, being surpassed
thereafter by White Elm. Black Cherry is a rapid and continuous
grower, almost equal to the White Elm. Russian Mulberry grows very
rapidly the first few years, making many branches and being thus an
exceptionally good soil cover. Its period of rapid height growth is
about the same as the Boxelder, and like that species it is a medium-
sized tree. Silver Maple is a rapid and continuous grower for the first
twenty-five years, when it usually begins to fail in eclese plantation.
Black Walnut is somewhat more rapid in growth than Green Ash dur-
ing the first few years from the seed. At ten to fifteen years Black
Walnut will usually equal Boxelder in height, and in favorable soils it
has attained a height of sixty feet in twenty-five years, though such
rapid growth is exceptional. Honey Locust is a more moderate grower
than Black Locust, but fully equals the White Elm and is of similar
habit.

These notes, made from observations in Nebraska, lowa, and South
Dakota, may not apply with even approximate truth in the Southwest,
where the conditions are very different, but they will serve to call

AZ

attention to an important point in providing the proper light require-
ment of trees in mixed planting. Such species as Boxelder and Rus-
sian Mulberry, which endure more shade than most of the broad-leafed
trees that have been tested in the West, by virtue of their compara-
tively rapid height growth during the first few years, are especially
useful as nurse trees, among which other species of more continuous
height growth may be set. If the latter be light-demanding they will
have overtaken their nurses before much damage can befall them (since
all species endure somewhat more shade in infancy than when older),
and if they be shade-enduring they will, by their habit of continuous
growth, surpass their nurses and thus come into better light conditions
as they develop.

The shade endurance of trees is probably less in the plains than
within the forest area. A list of trees most likely to succeed in the for-
estless region, grouped with reference to their light requirement, is
given below, the most light-demanding being named first. The rank-
ing is only tentative, and further observations may modify it somewhat,
but it is believed to be sufficiently accurate to stand as a basis for
determining what species may be planted together:

1. Cottonwood, Aspen, Mesquit, Black Locust.

2. Scotch Pine, Austrian Pine, Rock or Bull Pine, Green Ash, White
Ash, Black Walnut, Yellow Birch, Sweet Birch, Black Birch.

3. Red Oak, White Oak, Bur Oak, Tulip, Pecan, Honey Locust,
Chestnut.

4, Jack Pine, Catalpa, Silver Poplar, White Elm, Black Cherry,
Silver Maple, Osage Orange.

5. Hackberry, Red Maple, Boxelder, Russian Mulberry.

6. Sugar Maple, Beech, Norway Spruce, White Spruce, Douglas
Spruce, Red Cedar, White Fir, Hemlock.

Of these groups the first two may be considered lght-demanding
trees, and the last two shade-enduring, leaving the third and fourth
groups midway, but with considerable shade endurance in youth.

In making selections from this list, hardiness and moisture require-
ment must be kept in mind as well as light conditions and relative
height- growth.

MOISTURE.

It has often been claimed that the absence of trees from the plains is
attributable to a lack of sufficient moisture, and were it not that so
many artificial plantations are growing in what was only a few years
ago a treeless region, the hypothesis might be accepted. But when it
is recalled, also, that even in the States of Illinois and Lowa, with an
average rainfall of from 44 to 32 inches, vast areas were devoid of trees,
the theory of itself will not stand.

The minimum amount of moisture necessary for the support of forest
growth can not be definitely stated, because other conditions can not

20191—No. 18 2

18

be dissociated from the moisture requirement, atmospheric movements
and soil character being the chief of these. It may be safely assumed
that the line of successful tree culture will be moved westward in even
pace with the agricultural development of the country, and but little,
if any, in advance of it. The clay soil of the plains, protected with but
a scant growth of herbage, undisturbed through centuries beneath the
burning sun and almost constant wind, compacted by the hoof beats of
countless buffalo, can not be as absorbent as it will be when the plow
has turned it, and frost has disintegrated it, and the deep growing
roots of alfalfa have made it permeable to moisture. Wherever large
areas have been brought into cultivation, tree culture has been more
successful than before the advent of the plow. The prairies of Illinois,
Iowa, and the eastern parts of Kansas and Nebraska with their planted
eroves fully sustain this view. The area of successful tree culture in
the West can be demonstrated only by test plantings. Even should
failure attend these at first, it must be borne in mind that the methods
employed or the material selected may be responsible for the results
quite as much as any lack of moisture.

In the past two years, since the planting experiments herein recorded
were begun, the rainfall during the growing season, March to October,
at Manhattan, Kans., has been for 1896, 34.24 inches, quite evenly
distributed throughout the season; for 1897, 20.51 inches, with only
1.4 inches in August and September. The average rainfall at this
station for the months March to October, inclusive, for the past forty
years has been 24.02 inches, distributed by months as follows: March,
1.52inches; April, 2.78 inches; May, 4.08 inches; June, 4.46 inches; July,
4,65 inches; August, 3.52 inches; September, 2.95 inches; October, 2.26
inches: an amount which both in quantity and distribution would lead
one to anticipate, what experiments thus far indicate, suitability of
soil moisture for quite a number of varieties of trees of the Eastern
forest region. At Lincoln, Nebr., the rainfall for the same period in
1896 was 24,22 inches, and in 1897, 21.73 inches, and a reference to the
record of growths at that station (see page 59) indicates this to have
been ample for the needs of most of the species tested.

At Brookings, S. Dak., the rainfall for the same period in 1896 was
19.1 inches, and for 1897, 20.55 inches, and here again a reference to
the measurements of growth (see page 69) indicates sufficient moisture
for the needs of the trees. At the stations of Fort Collins, Colo., and
Logan, Utah, the tree plats were irrigated, and were therefore inde-
pendent of rainfall.

SOIL AND SOIL MOISTURE.

The amount of rainfall is not necessarily an indication of the moisture
of the soil, and hence of the amount of water available for the roots of
the trees. A heavy rain might fall on compact, sun-baked soil, such as
is common over extensive areas of the West, and by far the greater
part of the water would run off and be lost to vegetation because the

9

character of the soil would not permit its absorption. Herein will be
found one of the most helpful uses of groves in Western agriculture.
The tree tops will protect the surface of the soil, which, after the few
years’ cultivation given the trees immediately following planting, will
become much more absorptive than when protected only by the slight
covering of grasses which nature has placed there. The annual crop
of leaves falling in the grove becomes an additional absorbent, so that
the grove becomes in time a reservoir of moisture, increasing in utility
with age. This moisture becomes available to the surrounding fields.

In the sand hills of Nebraska and Kansas, where the soil has but a
slight percentage of clay as compared with its large proportion of sand,
even after long periods of drought only the few inches of surface soil
become dry. Scratch away but a few inches and the sand is found
moist to the touch, and this despite an even scantier cover than is
found in the clay loams that form the typical soil of the plains. This
would seem to establish the fact that soil moisture in any given locality
is quite as dependent, if not more so, upon the physical structure of
the soil itself as upon the amount of rain falling thereon.

Again, the character of the subsoil plays a very important part in
determining soil moisture. There is always somewhere below the sur-
face a moisture-bearing layer. It may be deep in the earth, as are the
strata which yield the water of artesian wells, or it may be on a level
with the streams, as is the case in the great bottom lands of the
Arkansas River. But even where the water-bearing stratum is but a
few feet below the surface, if between it and the surface soil a compact
clay intervene, the results are almost as deleterious to vegetable growth
as though the ground were dry to an unknown depth. These stiff
clays are of frequent occurrence throughout the West, and they form
a practically impenetrable cover to the water-bearing stratum below,
preventing the upward rise of water by capillarity, as would happen in
a porous soil. As the dry air is constantly taking moisture from the
surface soil by evaporation, unless the loss thus suffered can be replaced
the supply becomes reduced to a point where only the lower forms of
vegetation can be sustained. The loss of moisture can be supplied in
only one of two ways: (1) by application of water to the surface, as by
rain or irrigation, or (2) by a rise of water from the lower strata of the
soil. These lower strata may secure their water supply from far dis-
tant sources, the porous character of the subsoil permitting the transfer
of water for hundreds of miles from the place where it first came to
earth as rain or snow.

From what has been said it will be readily understood that, while a
stiff clay subsoil is unsuitable for trees and should be avoided if pos-
sible, it yet remains true that the trees themselves by their growth
eradually improve the soil conditions. By Shading the surface soil
they render it much more absorbent, and their roots gradually pene-
trate the stiff subsoils, thus permitting moisture to penetrate to a
greater depth than would otherwise be possible.

20

The influence of the structure or consistency of soils upon their
moisture content, and hence upon tree growth, is nowhere more evident
than along the Arkansas River. The broad bottom lands of the Arkan-
sas consist of a rich sandy loam of great depth. The porosity of the
soil permits the free passage of water—the water level being only 10
to 12 feet below the surface, with no hardpan intervening. The lux-
uriant growth of planted trees in this moist soil is phenomenal. At
Hutchinson, Kans., there are extensive plantations of Hardy Catalpa
which average over 20 feet in height seven years from the seed. At
Rocky Ford, Colo., in a plantation which had not been irrigated for
three years previous to the time it was examined by the writer, the Cot-
tonwoods were growing as luxuriantly as along the bottom lands of the
Mississippi in Arkansas.

On the other hand, the effect of a stiff (hardpan) subsoil is equally
apparent in the growth of trees. At College Station, Tex., the Brazos
Valley is underlaid within 2 feet of the surface with a very stiff blue
clay. The native trees on such lands are so stunted as almost to lead
one to mistake their identity, and this, too, in a region of heavy rain-
fall?

Over much the greater portion of the plains the typical soil condition
may be stated as follows: A clay-loam surface soil, varying in depth from
1 to 3 feet, dark brown to black in color, of great fertility, underlaid
with a moderately stiff yellow or yellowish-brown clay to a great depth.
This clay contains considerable sand, and is frequently characterized
by small lumps of a calcareous nature, which show white when cut
through in digging. It is penetrable by tree roots, though not so easily
as is the looser subsoil of the Arkansas Valley. There would seem to
be no reason why such a soil, under proper treatment, should not sup-
port forest growth. Its moisture-bearing capacity will undoubtedly be
increased by the thorough cultivation of extended areas, and thereafter
the compensatory action of forest growth will be manifest. Through-
out the plains the soil in the bottom lands along the streams is moist
for a much longer period than the uplands, and suecess with trees in
the low valleys is comparatively certain. But the great need of groves
is on the high lands, where they will act much more effectively as wind
breaks, and where the water from the snowdrifts which they catch
will be absorbed by the fields. Hence, wherever possible high lands
should be selected as sites for groves, even though a slower growth
of the trees be secured there.

ATMOSPHERIC MOISTURE.

The great prevalence of winds in the plains region is well known.
Their action, generally speaking, is to increase the transpiration from
plants and the evaporation of moisture from the soil, and they may
thus be considered a hindrance in agriculture, to say nothing of the
discomfort they cause. Prof. F. H. King, of the University of Wiscon-

21

sin, has published in Bulletin No. 42 of the Wisconsin Agricultural
Experiment Station interesting data showing the effect of wind in
increasing evaporation, and also the great utility of groves of trees
as wind-breaks and crop protectors. Doubtless the ameliorating effects
of wind-breaks would be much greater in the plains than in Wisconsin,
all meteorological conditions there being more severe.

Series of observations on atmospheric humidity at the several experi-
ment stations show that the relative humidity seldom falls below 50
for more than a day or two ata time, and that such days of extreme
aridity of the atmosphere are often followed immediately by periods
when the air is of relatively high humidity, permitting a recovery on
the part of vegetation from the ill effects of the excessive evaporation
which must have occurred during the very dry days. It has been
demonstrated that the amount of evaporation from plants is directly
dependent upon the available water supply, other things being equal.
Of course, a low degree of humidity in the air will tend to increase
evaporation, and trees can not be expected to make the vigorous
growth under such conditions that is possible in moister regions.

The constant winds are a principal factor in the aridity of the plains.
With no obstruction for hundreds of miles, they blow over an area
devoid of forests and of large bodies of water. [ven in a region of
abundant rainfall, such continuous air movement would cause greatly
increased evaporation and have a bad effect on plant growth, but with
a limited precipitation every means of protection should be employed.
It is not to be supposed that trees will grow to the size in the wind-
swept plains that the same species will attain within the forest area.

The heavy winds of the plains suggest the planting of forest trees in
masses or large groves, rather than in long narrow strips, as was the
general practice under the timber-culture law. If ten acres be set aside
for a grove, the trees will not only form a better windbreak if planted
in a square or a rectangle of but little greater length than breadth, but
in their more compact form they will hold the snows better and will
themselves suffer much less from the action of the winds. The outer
rows of trees will afford protection for the greater part of the plantation.
This form of grove is especially useful if it be protected by planting,
on all sides and a few rods from its borders, a hedge row of trees that
shall serve as a wind mantle. In the North such a hedge will cause
the formation of drifts between the hedge and the grove instead of
within the grove itself, and the damage by breaking when the snow
melts will thus be obviated. Moreover, the water from such melting
drifts is largely absorbed by the soil, and thus saved to the farm.

SELECTION OF SPECIES.

In the selection of species for Western planting, it is not always
possible for the grower to be governed exclusively by considerations
of adaptability to his conditions and utility of the timber. Oftentimes

22

he has but a limited range of choice, and in such cases he should con-
sider first of all the suitability of the species to the location. Itisa
waste of time and energy to plant Cottonwood on high land, except as
a roadside tree. While none of the native species in the farther West
occur on high lands, all preferring the vicinity of living streams, yet it
has been found that some succeed when planted on high lands much
better than others. At Ogallah,in northwestern Kansas, in the grounds
of the State Forestry Station, Hackberry, White Elm, Black and
Honey Locust, Black Cherry, and Green Ash grow well on high lands,
their vigor being in about the order named, with Boxelder and Silver
Maple somewhat less vigorous. At the Brookings (S. Dak.) Station,
Bur Oak and Black Cherry are proving well adapted to high land, as
is also Scotch Pine and the native White Spruce of the Black Hills.

Of course, where irrigation is practiced the choice of varieties is only
limited by their ability to withstand extremes of heat and cold. It
will be readily understood that within the plains—from Texas to North
Dakota and from Missouri and Jowa to the Sierra Nevadas—there must
be a careful study of the adaptation of species to the soil, climate, and
exposure of the particular site to be planted.

In Texas there is a reasonable expectation that the valuable Shortleaf
Pine (Pinus echinata) will prove useful beyond its natural range in the
eastern part of the State, while Rock Pine (P. ponderosa scopulorum)
should prove useful in the higher lands of the West. This latter spe-
cies indeed is worthy of trial throughout the plains region, being
native of the entire Rocky Mountain region and extending farther east
(along the Niobrara, in Nebraska) than any Northwestern tree form.
In Texas and the Southwest several other forms give promise of useful-
ness that will probably not prove hardy farther north than the central
partof Oklahoma. The Mesquit (Prosopis juliflora) is a native species
valuable both for its wood and the forage it supplies for stock, which
should prove an excellent nurse for conifers. The Chinaberry (Jelia
azedarach) is a rapid-growing species that has been much used as
a Shade tree in the Southwest, which may prove useful as a dense
shading nurse for such species as Catalpa, Black Walnut, and the
Oaks. Both these native forms seed freely and grow readily from
seed, and may be used to take the place of such Northern species as
Aspen and Boxelder in mixed planting. Among other native forms
that will probably prove useful in the Southwest the following may be
mentioned as worthy of trial: Osage Orange, Cow Oak, Hackberry,
Pecan.

Oklahoma is the border land where one may find a coming together
of Northern and Southern species. In the northern part of the Terri-
tory such species as are commonly grown throughout the Northwest
are planted, though Boxelder and Silver Maple can hardly be called
successful. In the southern part the Mesquit is native and the China-
berry is seen under cultivation. There is offered here a wide range for

23

experimentation to determine the adaptability of species to the climate;
the settlement of the country being recent, comparatively little plant-
ing has been done. Oklahoma, Kansas, southern Nebraska, and
southern Colorado should beable to grow a larger variety of trees than
the more northern States: Russian Mulberry, Silver Maple, Hackberry,
Black Locust, Honey Locust, White Elm, Catalpa, Black Cherry,
Cottonwood, Aspen (especially in the West) Black Walnut, Bur Oak
(Quercus macrocarpa), Red Oak (Q. rubra), Chinguapin Oak (Q. acumi-
nata), Green Ash, White Ash, Red Cedar, Rock Pine, and possibly White
Fir and Douglas Spruce, with Scotch and Austrian Pine for the more
northern part of the region. In addition to these a number of other
species are doubtless worthy of trial, but only such are mentioned here
as are available by purchase or by collection within the region named.

From central Nebraska northward the colder temperature will pre-
vent the use of several species of the above list, notably Russian Mul-
berry, Black Locust, Catalpa, and Chinquapin Oak, and north of the
Towa line Black Walnut and Honey Locust. In the northern region,
however, the Birches and Spruces are added to the list. In the ex-
treme north a very few species are available, the principal ones being
Boxelder, Aspen, Yellow Birch, Sweet Birch, White Elm, Red Cedar,
White Spruce, Red Pine, Jack Pine, Scotch Pine, and Austrian Pine.

In addition to these trees there are several shrubs and small-sized
trees that may prove very useful in Western planting. Among these
may be named Artemisia abrotanum tobolskianum, a Russian sage brush
that has proven a hardy and very vigorous grower from Kansas to the
Northwest Provinces of Canada. It attains a height of 6 feet the first
season, and makes a useful hedge for catching snow. One year’s trial
was sufficient to demonstrate its unfitness for use in great quantity as
a nurse in close planting, but in wider planting it may perform the
office of soil-cover well, and as a wind barrier and snow catcher it will
afford great and needed protection when placed to windward of a plan-
tation. Other east Russian species that give evidence of hardiness
and vigor are Hlewagnus angustifolia and Tamarix amurensis. The Rus-
sian Poplars, which were imported several years ago and which are
quite hardy, seem not to be able to resist the heavy droughts that occur
in the Northwest. They may prove useful for planting near streams
and in moist soil, but for this purpose there are native species of greater
value.

The Yearbook of the Department for 1897 contains a list of economic
trees suitable for planting in various parts of the country, and this
will be found helpful in adding to the varieties above mentioned.

INTRODUCTION OF EXOTIC TREES.

It has been frequently asserted that native trees are better adapted
to the conditions of the country in which they occur than those imported
from other countries. While experience shows that this is not even

24

true in the regions of natural forest growth, in the forestless region we
are in the nature of the case forced to employ trees not native, either
brought from other parts of our own country, which are climatically
similar yet different, or else from foreign countries which may offer
species much better adapted to the arid and subarid conditions of our
Western plains.

It seemed only proper that at first the adaptability of our very
varied native flora be tested with such exotics as had become fairly
acclimated, like the Scotch and Austrian Pines, which seem to have
done fairly well in some of the Northwestern plains. Last year, how-
ever, under instructions of Secretary Wilson, a special effort was
inaugurated to find species especially adapted to the arid regions.

In order to do this systematically and with full knowledge of the
climatic conditions from which the species came, and with such pre-
cautions as are necessary to be observed so as to avoid the simultaneous
importation of undesirable pests, Mr. D. G. Fairchild was employed to
earry out the following programme, prepared by the chief of the Division
of Forestry:

(a) Employ a man specially fitted for this kind of acclimatization work, thor-
oughly familiar, by residence, with climatic conditions of the arid regions or part
of them, who is to devote his entire time and attention to this one problem, and give
him opportunity to study the field as well as the literature bearing on this problem.

(b) Establish (possibly in connection with the experiment stations of Arizona,
New Mexico, Colorado, Montana, etc.) trial gardens, where all materials are tested.

(c) Collect and plant seeds of plants of all.the native tree and shrub flora indige-
nous to the dry regions of our own country, which have never been tested in culti-
vation and which probably answer best our needs.

(d) After thorough study of literature, and preliminary correspondence with
proper persons in foreign countries, let the acclimatizator travel through these coun-
tries to collect plant material, becoming familiar at the same time with the climatic
similarities and differences of these countries as compared with our own. Some
material may be got by correspondence, but this method will prove only partially
satisfactory.

(e) If properly done and superintended, within four years the most unique and
valuable arboreta in the world would thus have been assembled, which would in
time answer the question as to the most desirable species for planting in the arid
regions.

Before Mr. Fairchild had fairly entered upon his duties it was con-
sidered that such a systematic procedure would be desirable in all
importations, and the whole matter of plant introduction was placed in
his hands.

Meanwhile Prof. N. E. Hansen had been sent on an expedition to
Russia, and among the importations secured by him were found the
following tree species, some of which were already known, although not
extensively tried:

Acer tartaricum. Populus (4 species).

Artemesia procera. Quercus mongolica.

Artemesia abrotanum. Salix (6 varieties).

Caragana (9 species). Ulmus campestris microphylla.

Fraxinus mandschurica. Tilia mandsehurica.

25

Another collector, Dr. Palmer, going into Mexico, the opportunity
was embraced to secure from that dry country such valuable species
as might be an addition to our Southwestern States, although some of
the native species like the Mesquit still await trial under cultivation,
which they have never received.

Some years ago the Department imported for these regions the Aus-
trahan Wattle Trees (Acacia decurrens and pycnantha), and for the
more humid portions several species of Eucalyptus and the Cork Oak.
The results seem not to have been very satisfactory (except in Cali-
fornia), to a great extent, probably, for lack of attention by those to
whom the seeds were sent.

Vhe Mexican importations comprise the following: Axmole, sapon-
iferous; Candelilla, ornamental; Cesalpina cacalaco, tanning; Cobano,
timber; Crecentia alata, timber and medicinal; Hizlama, medicinal,
edible fruit; Pzthscolobium dulce, tanning, edible fruit, shade; Piths-
colobium sonore, hedge and timber; St. John’s Bread (imported from
Africa), fruit, forage; Tabebauena donnel-smithii, or Primavera, timber.

None of these importations have as yet been planted out. They will
at first be taken care of at various experiment stations, as well as at
Washington, and it will take several years before a judgment as to the
usefulness of these new acquisitions can be had.

HARDINESS.

It has been assumed by many planters that a certain degree of hardi-
ness is inherent in every species as such, and while this may be true to
a Slight extent it can not be used as a basis for selection. Were it
entirely true we should have no need of considering the locality whence
our stock came. Red Cedar from Florida would be just as suitable for
planting in Nebraska as Platte Valley Red Cedar. It is known that
trees can be grown successfully in a locality where the conditions are
somewhat, nay, considerably, different from those under which the par-
ent tree grew. Thus the Bald Cypress, whose habitat is the swamps and
lowlands along our Southern rivers, is found to grow well in highland,
even beyond its natural range. There is a healthy specimen of this
tree in the grounds of Prof. E, A. Popence in the high prairie overlook-
ing the valley of the Blue River at Manhattan, Kans. It would be
unsafe to make hasty generalizations, however. It is known that the
locality of the parent tree has a great influence upon the hardiness of
its seedlings, and for the West especially, where conditions are uniformly
more severe than within the forest regions, seed should be secured from
localities most closely resembling that in which they are to be planted.
The range of successful seedling growth has yet to be determined, and
it is a practical question for experimental determination. It is impor-
tant to the seedsman, the nurseryman, and the planter. The seedsman
should know how far from the place of collection his seeds will prove
satisfactory, for of course 1f the resulting seedlings winterkill or fail to

26

withstand summer conditions his trade will be badly affected. More-
over, if seeds can be collected in a locality where they are plentiful and
distributed widely a great economy is effected. The nurseryman’s rep-
utation is dependent upon the character of his stock as well as upon his
personal integrity, so that he should have full knowledge of the influ-
ence of the locality of the seed trees upon the hardiness of their offspring.
The planter is more interested, perhaps, than either of the others, as
the suecess or failure of his plantation is involved.

Observations have been made on many species. Mr. Robert Douglas
reports that the Black Walnut at Waukegan, Ill., when grown from
native trees, is perfectly hardy, but seedlings from nuts grown in the
southern part of the State winterkill badly at Waukegan. So, too,
Douglas Spruce, from seed grown on the western slopes of the Cascades
in Oregon, with their moist and mild climate, are not hardy in the Mis-
sissippi Valley, while seedlings of the species from trees growing on the
eastern slopes of the Rockies, with their dry, rigorous climate, are per-
fectly hardy. Instances of this kind might be repeated.

To determine the range of this influence of the locality of the parent
trees upon hardiness, development, and similar questions, the Division of
Forestry has instituted an experiment in cooperation with thirty experi-
ment stations. Seven species of deciduous trees of wide natural distri-
bution were collected at all the stations where they could be obtained,
and samples of each lot were sent to the entire list of stations. In this
way seed from each locality was grown side by side with seed of the
same species from all the other localities, fairly representing the entire
country. An opportunity was thus afforded for comparative study.
While the experiment has not yet progressed far enough for the publica-
tion of results, there are already significant indications which warrant
its continuance through a series of years and with many species.

RULES FOR MIXING SPECIES.

The choice of kinds to be planted in any locality is, then, dependent
upon hardiness, adaptability to the particular location (high or low
land, ete.), availability (ease and cheapness with which they can be
procured), economic value of the wood, or especial purpose in view
(wind-break only, or post timber, fuel, etc.). The relative height-
growth and light requirement are the principal considerations that
determine the mixing of species. In some regions the capacity of a
species for preserving or improving the character of the soil is also
important. The following rules for mixing species are taken from the
Annual Report of the Chief of the Division of Forestry for 1886:

RULE 1. The dominant species (i. e., the one that occupies the greater part of the
ground) must be one that improves the soil conditions, generally a shady kind.

RuLE 2. Shade-enduring (i. e., densely foliaged) kinds may be mixed together

when the slower-growing kinds can be protected or guarded against the overshad-
owing of the more rapid grower, either by planting the slower grower first or in

27

greater numbers or in larger specimens, or else by cutting back the quicker-growing
ones.

RvuLE 3. Shade-enduring kinds may be mixed with light-needing kinds when the
latter are either quicker growing or are planted in advance of the former or in
larger specimens.

Ru we 4. Thin-foliaged kinds should not be planted in mixtures by themselves,
except on very favorable soils, as in river bottoms, marshy soil, ete., where no
exhaustion of soil humidity need be feared, or else on very meager, dry soils, where
most shady trees would refuse to grow and one must make a virtue of necessity.

RULE 5. The mixing in of the light-foliaged trees in single individuals is preferable
to placing them together in groups, unless special soil conditions make the occupa-
tion of certain spots by one kind, which may be better adapted to them, more desira-
ble—as, for instance, the ash in a wet ground (slough). When a slower-growing,
light-needing kind is to be grown side by side with a quicker-growing, shady one—
as, for instance, Oak and Catalpa—a group of Oaks will have more chance to with-
stand the shade of the densely foliaged Catalpa than the single individual.

In the experimental plantings of this division a number of mixtures
are given which are at variance with the rules above quoted. The pur-
pose in view is to demonstrate the effect of various methods of mixture
on the species used, and to make observations upon the growth of the
more valuable timber species when surrounded by different shade influ-
ences. There are more cloudless days in the plains than in the Eastern
forest region, and this change in light conditions may affect the growth
of tree species differently. Many combinations have therefore been
made, the purpose in view being entirely experimental.

PURE PLANTINGS.

By pure plantings are meant plantations in which only one species
has been used. Under the great majority of conditions’pure planting
is not advisable, particularly so on highland. Where there is a con-
stant supply of moisture, as near a running stream or in bottom lands
with a porous subsoil, groves of a single kind of trees will frequently
thrive as well as mixed groves.

The same species, especially if a light-needing one, planted where
there is a stiff subsoil, or in a drier locality, will grow well for a period
of twenty to thirty years, when the trees will die rapidly, and at the
time when they should be in the most vigorous health they fail com-
pletely, because they were unable to keep out weeds and shade the soil
sufficiently to prevent its drying out.

At the Kansas Agricultural College there is a pure planting of Silver
Maple, about twenty-five years of age, which began failing about five
years ago, and in which there is now hardly a single healthy tree. This
grove is on an eastern Slope, with rather thin soil on a limestone sub-
soil—conditions not suitable for the species, which requires a deep,
fresh soil.

Mr. C. E. Whiting, of Monona County, Iowa, planted a grove of
Silver Maples in 1873, which thrived until’they reached an average
height of 60 feet. A few years ago they began to fail, and very few

28

now remain. These were set in the second-bottom land of the Missouri
River, a much more favorable location than the one above cited in
Kansas. The failure of pure-planted Cottonwood groves from ten to
thirty years old has been so common throughout the West that special
instances need not be cited. These are short-lived trees, and under the
most favorable natural conditions, as in the immediate vicinity of
streams, they thin out rapidly as they approach maturity; so that it is
not surprising that they should die young when set in artificial groves.

In the case of longer-lived species, such as Black Walnut, White
_ Elm, the Ashes, and Oaks, pure planting is inadvisable because the
trees grow so slowly in youth that it takes them a long time to shade
the ground, thus either requiring continued cultivation through sev-
eral years, an expensive practice, or else resulting in the checking of
growth by grasses and weeds. Many species, under the most favorable
conditions, do not make a shade sufficiently dense to prevent weed
growth. Such trees are unfit for pure planting, not only on this ac-
count, but because, having light foliage, the lower limbs continue to
develop through a long period of years, and the trunk is thus either
very Short, or else knotty, either condition impairing the value of the
timber.

The only places where pure planting is advisable is in swampy land,
where the conditions are such that but few species will grow at all, or
on very sterile lands, for the same reason. In all other cases a mixture
of varieties is best, in which there shall be species especially adapted
to various uses, set among nurse trees which will force them to grow
tall and straight.

MIXED PLANTINGS.

Except for comparison, only mixed plantings have been tried in these
experiments. The mixtures have been designed to include a varying
number of species in different proportions, and have had always in
view the light requirement of the several species used. Inexpensive
quick-growing material has in all cases formed much the greater part,
and the slower-growing species have been placed at greater distances,
so that in thinning they would not be disturbed. This cheaper plant
material is designed to nurse the more valuable sorts through their
earlier years, and insure their becoming established.

NURSE TREES.

Trees which are planted with others in order to influence their growth
are called nurses. Their purpose is to create conditions favorable to
species that are difficult to establish, by affecting the light conditions
surrounding them aud by furnishing soil cover. The value of a species
as a nurse tree depends not at all upon its utility as timber, but
altogether upon its habit of growth. In the treeless region a good

29

nurse tree should grow rapidly during the first few years to afford
protection as soon as possible and either moderately or very slowly
thereafter. Within the forest area rapidity of early growth is less
important. As in the human family, the nurse loses its usefulness
when its protégé becomes old enough to take care of itself.

Nurse trees have always as their principal object a helpful effect
upon those among which they are planted. They may produce the
poorest quality of timber themselves, or may even never grow large
enough to make timber of any kind, and yet be of the greatest value
to the plantation.

The Boxelder, one of our most useful species for Northwestern plant-
ing, because shady and most readily grown, is short lived, makes a
crooked stem, inferior in quality even for fuel, and is neither a strong
nor durable wood, but many valuable species are the better for growing
surrounded by Boxelders during their youth, and hence it deserves a
place in every plantation in the Northwest.

The nurse tree is of the greatest importance during the first ten to
twenty years of the plantation’s history. It will frequently,in the first
few years, seem to threaten to crowd out the trees which it is intended
to benefit, but this is a danger more apparent than real, for if a grove
be properly designed, the more permanent trees require just such
erowding in order to insure their best development. If the nurse trees
are permitted to remain in the plantation too long, or are allowed to
encroach upon the main crop, they may become a positive detriment
instead of a benefit.

There are two groups of nurse trees—those with thin foliage, making
a slight shade, which are principally useful in protecting the infancy
of trees difficult to start, but of vigorous aftergrowth; and those havy-
ing dense foliage, making a heavy shade which will prevent the
growth of side branches on their charges by cutting off all the light
except that directly overhead, and to serve as soil cover. In the first
class are Aspen and Cottonwood; in the second, Boxelder, Silver Maple,
Russian Mulberry, and Chinaberry.

It will be readily understood that these two groups of species have
a widely different effect, both upon the trees they are intended to bene-
fit and upon the soil. The thin-foliaged kinds will not prevent weed
growth, since their shade is so slight that almost all the grasses and
weeds are but little affected by it, and they will thus be of slight bene-
fit in shortening the period of cultivation. But they create a condition
seemingly favorable, especially for the conifers, in the plains where the
excess of bright sunshine is in striking contrast to the native environ-
ment of most young evergreens.

Within the White Pine region, when fire has destroyed the forest,
it has been observed that the first trees to appear in the burned dis-
trict are Poplars (Aspen) and Birches, and’ when these have attained
a height of from 5 to 10 feet many young Pines and other evergreens

30

may be found growing in their shade. In the denser shade of mature
Hemlock, for instance, comparatively few seedling Pines are found.
The seed would germinate there, but the plants could not thrive in
such dim light any more than they could in the full sunshine.

Acting upon this observation, plantings were made the past season
of Aspen and Birches at all our stations, having spaces at intervals of
8 to 12 feet, in which various species of Pine, Spruce, and Fir will be
planted when the nurse trees have from one to three years’ start. So
far as known this is the first experiment of this kind that has been
undertaken in the West.

The Aspen (Populus tremuloides) should be a better tree for this
purpose in the plains than either the Cottonwood (Populus deltoides) or
the Birch (Betula lutea), because its shade is the least dense and its
vigorous growth lasts a shorter period. The Birch, which in its native
woods has a rather slender habit of growth, in the bright sunshine of
the plains becomes stalky and densely leafed. This has been observed
at the stations in South Dakota and Nebraska, and may result in a
totally different effect upon the conifers to be set with it than has been
observed in the natural forests. Indeed, it may be said in passing that
the intense light of the plains region, no less than the widely differing
soil and moisture conditions, is apt to have a pronounced effect upon
the development of species native of cloudy, moist localities.

Other light-foliaged trees that may serve equally well as nurses,
especially in the Southwest, are the Black Locust, also called Yellow
Locust (Robinia pseudacacia), and the Mesquit (Prosopis juliflora).
These species have the advantage of being valuable timber trees.

The Black Locust is like the Cottonwood in being a gross feeder,
and this habit may prevent the use of either species as a nurse for
conifers, which in several species are slow to become established.
Like the Cottonwood, too, it is a thin-foliaged, light-demanding species.
So far as known the Mesquit has never been tested in artificial groves.

The use of quick-growing, densely shading nurse trees has been more
thoroughly tested, and results have already been reached which fully
warrant the practice. They are especially valuable where broad-leafed
trees only are planted, and as the price of evergreens has hitherto pre-
vented their extensive use in the plains, the employment of dense-
shading nurse trees is worthy of somewhat extended discussion.

A plantation of Green Ash or White Elm, two of the most widely
successful species that can be grown in the plains, can best be estab-
lished by covering one-half to three-fourths of the ground with Box-
elder or Russian Mulberry, and setting in the desirable Ash and Elm
at regular intervals. Planted by themselves, Ash and Elm will each
make more vigorous growth than when surrounded by the other
species, because they are both light-loving trees, and in the full sun-
Shine they will throw out many branches, spreading their tiny crowns

31

in much the manner of the fully developed tree. But despite this
more luxurious growth they do not make sufficient shade to protect
the soil beneath them, and unless cultivation is thorough there will
soon be a compact sod of the strong-growing prairie grasses among
the trees that will take from them much of the soil moisture and thus
materially check their growth. The same thing is true of all the more
valuable broad-leafed trees. The Black Cherry, although a dense-
shading species while young, does not grow rapidly enough to be used
as a nurse tree, and is too expensive. Catalpa, a good shade-making
tree in midsummer, is about the last species to leaf out in the spring
and the first to drop its foliage in autumn; moreover, its branches are
So persistent that it needs the help of a denser-shading variety to check
lateral growth at the earliest possible moment.

The other economic species that are easily obtainable in the West—
the Oaks, Chestnut, Walnuts, Hickories, Tulip, and Locusts—will all
profit by the protection or formative influence of a good nurse during
the first ten years after planting.

The conifers that have been planted with dense-shading nurse trees
in the West have succeeded well, and have stood more shade than one
would suppose. At the Brookings (S. Dak.) Station White Spruce and
Colorado Blue Spruce are completely overtopped by the nurse trees
which surround them and show no distress, while Scotch Pine and
European Larch fully equal in height the Boxelder and Maples with
which they were planted ten years ago.

From the standpoint of the farmer, dense-shading nurse trees are
useful because they reduce the period of cultivation and the consequent
cost of the plantation, and greatly increase its effectiveness as a wind-
break. Toaccomplish this purpose, the nurse must be a rapid growing
or spreading species that shall completely shade the ground, when
planted 4 by 4 feet, at the close of the second or third season.

Using such a tree, it will be found that the second year cultivation
will be somewhat interrupted by the growing lateral branches, while
during the third year not more than half the cultivation required the
first season will be necessary, if any, and thereafter there will be no
need of cultivation whatever, provided the density of the crowns is
preserved. Contrasting this with the care of a grove in which light-
foliaged species, such as Cottonwood or Aspen, form the majority of
the trees set, or one in which the trees are planted at greater dis-
tances, it will be seen that continued plowing is necessary to keep down
the weeds and grass.

It may seem unnecessary to keep the soil free of weeds and grass, but
it Should be remembered that the most important factor in all cultural
operations in the drier parts of the country is the saving of soil moisture.
With a limited rainfall and excessive evaporation, the farmer is com-
pelled to save to his plants, by every device ih his power, such moisture

32

as comes to his fields. He can not afford to permit grass and weeds to
rob his young trees of moisture any more than he can permit them to
rob his corn. When once the trees have completely shaded the ground,
no other growth is possible.

Among the quick-growing, densely foliaged trees only one species
seems especially valuable as a nurse tree in the colder parts of the West,
and that is Boxelder. Farther south the Silver Maple and Russian
Mulberry may be used, while in Texas it is thought the China Berry
will prove a valuable nurse tree. The Umbrella tree (Melia azedarach
var. umbellifera) should prove even more useful in the same region.

Artemisia (A. abrotanum tobolskianum) has been planted as a nurse
in various mixtures at several of the Western stations. It is perfectly
hardy, but is an extremely vigorous grower, and cuttings when less
than two years planted have grown so rapidly that it has been neces-
sary to cut them back severely to prevent them shading out the more
valuable trees. Artemisia is a tall-growing bush, sending up many
stems from the collar, and it has been found necessary to remove all the
stems but two in their second year. It grows readily from cuttings,
and is sure to prove useful as a surface wind break, though it will prob-
ably prove too rampant a grower for use aS a nurse. Asa nurse it will
have to be handled with the knowledge that in the first season it will
spread enough to cover 6 square feet of ground, but after that not gain-
ing much in size.

Bleagnus angustifolia, the Russian Wild Olive, has been recom-
mended as a nurse tree for usein the Northwest, being perfectly hardy,
as also has Tamarisk (Tamarix amurensis), a Russian form of the well-
known ornamental shrub, though the latter seems hardly a dense
enough grower to be as useful as Boxelder.

THE USE OF EVERGREENS IN WESTERN PLANTING.

It will be observed in the experiments hereinafter noted that in all
the plats set in 1897 spaces were left to be filled in with evergreens. No
one questions the great value of this class of timber trees for grove
planting in the West. The fact that they retain their leaves through-
out the year makes them the most useful species that can be employed
in making wind-breaks, while their erect habit of growth and strong
light wood gives their timber peculiar value in farm construction.
The principal difficulties heretofore experienced in western conifer
planting have been the high price of stock and the poor average
stand secured. Doubtless the cause of the high prices charged by
nurserymen for evergreens has been the small quantity of such stock
demanded by the market. In nursery operations a great quantity of
trees can be grown for very little more money than a small quantity,
and if the nurserymen could be assured of a large market, there would

33

be a proportionate decline in prices. The Department of Agriculture
purchased in the aggregate 885,000 conifers during the spring of 1897.
The trees were all seedlings two to three years old, except such as had
to be dug in the forests, which probably ran from three to seven years.
The standard nursery varieties, such as White, Scotch, and Austrian
Pine, White and Norway Spruce, cost from $2 to $4 per thousand.
Nursery-grown Douglas Spruce were secured at $6 per thousand, and
wild seedlings of Red Pine for $12.50 per thousand. It must be under-
stood, of course, that these prices, so much below the rates quoted in
the nurserymen’s catalogues, were due to the large blocks of stock
taken; but they demonstrate that evergreens can be sold at a much
lower price than is now commonly demanded. It will be observed
that there is a wide range in the price of stock. The farmer might
not find it profitable to use pines at $12.50 per thousand, but if he can
buy them at $3 per thousand there is no class of stock that could be
so profitably employed in western planting. Even at this rate, how-
ever, with the heavy per cent of loss that follows ordinary methods of
handling, the stock is expensive by the time the young trees are well
established.

As will be observed in the records of work at the several stations,
the great difficulty in growing conifers in the plains is in getting them
safely through the first year. If seeds are used the tiny plants are in
danger of “damping off” before they are three months old; and if
young plants are purchased, their first year in their new location is
beset with constant difficulties.

The methods of planting in our experiments are detailed in another
place and need not be repeated here. But in commending the use of
conifers in the treeless region, it is no more than just to point out to the
intending planter that no method of treatment that we have yet
employed has been successful in a marked degree, although the occa-
sional specimens seen prove that under favorable circumstances success
is possible. Underplanting among box elders that are about 10 feet
high resulted in a fair admixture of conifers, but the per cent of loss
was very heavy (see South Dakota), while underplanting among large
Silver Maples, as attempted in Kansas, was a complete failure. The
attempt to grow the common evergreens in nursery rows and in screened
beds, while not altogether discouraging, was far from satisfactory. In
South Dakota, Nebraska, and Kansas no attempt was made to provide
for the watering of the trees, and this was probably the principal cause
of failure. I have no doubt, with facilities for watering, and provided
the young conifers arrive in good condition, they can be grown with
but slightly more loss than will result in deciduous trees, particularly
in the eastern part of the forestless region. If the farmer can provide
a brush screen for his evergreens after getting them into the ground in
good shape, and then have the nursery bed near enough to the wind-

20191—No. 18——3

34

mill pump to admit of flooding it occasionally during dry weather, there
would seem to be no reason why the trees would not grow well. The
arrival of the stock in good condition, and care in planting to protect
the roots from drying and to set the plants firmly at the same depth
they stood before is of great importance, for no amount of after care can
compensate for neglect in handling.

There are occasional years in the plains when the season is altogether
favorable for tree culture—years of unusual rainfall and a consequently
plentiful supply of moisture. If such seasons could be foretold no
especial difficulty would be experienced in securing a stand of conifers.
It was in such a season that the South Dakota planting of 1889 was
made, of which details are given on pages 65-7.

In dry years the difficulty of securing a good stand is greatly
increased, and it is for this reason that a good water supply will be
found of particular value. Having established the young seedlings in
nursery, they can be transplanted to their permanent places from time
to time, taking advantage of favorable conditions of weather and soil
moisture. It will be possible for the farmer to take up the plants with
balls of earth attached, and thus more thoroughly protect the roots
from exposure than can be done where the trees are received from com-
mercial growers, The method here suggested demands a great deal
more labor than is involved in handling the common deciduous trees,
but once a stand of evergreens is secured the grove of which they form
a part is so much enhanced in value that the additional labor will
prove the best possible investment. The evergreens form the ideal
wind-break. In the margin of the plantation they carry their branches
to the ground, thus turning the strongest winds, while everywhere
they present a compact mass of foliage which makes them many times
as efficient as broad-leafed trees in breaking the force of winds, espe-
clally in winter, when there is the greatest need of protection.

Taking no account of the labor involved, at $3 per thousand, the cost
of stock established in the plantation, if only 25 per cent of the trees
were saved, would be $12 per thousand. I question if the farmer lives
in the treeless region who would not consider his farm increased many
times $12 by the presence of a 10-acre grove in which there were 1,000
thrifty evergreens. In point of fact, a 10-acre grove should, at the age
of 10 years, contain at least 3,000 evergreens, and with such a stand
there is a large margin for expense and loss between the original cost
of the conifer stock and the actual value of the plantation.

EXPERIMENTAL PLANTATIONS.

Experimental tree planting in the West first received the attention
of the Department in 1891, when an arrangement was made with Mr.
Edgar G. Bruner by which he was furnished stock for planting three
acres, according to plans furnished, in the Sand Hills of Holt County,

35

Nebr. The result of this experiment is recorded in the Report of the
Division of Forestry for 1891. Owing to the distance of the Bruner
ranch from the railway (25 miles), and the consequent difficulties of
inspection, it was thought best to abandon the plantation. It is suffi-
cient here to say that the trees were planted on the crest and higher
slopes of a sand ridge which supported a sparse growth of prairie
grasses. Three plats were set in different mixtures and by different
methods, as follows: In plat i, only conifers, Jack (Banksian), Scotch,
Austrian, Red, and Rock (Bull) Pine, Douglas Spruce, and Arbor Viti
were used, nearly one-half the trees being Jack (Banksian) Pine.
The land was not plowed, but furrows were turned for the trees to be
set in, the intervening spaces being left undisturbed, the purpose being
to prevent the shifting of the sands. In plat 2, a mixure of conifers
and hardwoods, three-fourths of the trees being of the latter type, were
set asin plat1l. Plats 3 and 4 were plowed, and the trees were two-
thirds conifers and one-third hardwoods.

The plats were examined by the writer in 1894, and the only one
which had made a stand was plat 1, which was planted 2 by 2 feet apart,
and had received no cultivation; the Jack (Banksian) Pine seemed
thoroughly adapted to the locality. The growth, while not large, was
healthy and stocky, and the plat made a bright green mass in the brown
and dry grasses visible from a distance of several miles. None of the
other species had become well established, a few trees only of Red, Rock,
and Scotch Pine having grown. In the other three plats scarcely a tree
had survived.

The experimental plantings herein described were begun in 1896.
The first plantations were located on thefarms of the State Agricul-
tural colleges of South Dakota (Brookings), Nebraska (Lincoln), Kan-
sas (Manhattan), and Colorado (Fort Collins). During the year 1896
arrangements were made for establishing stations at the Crookston and
Grand Rapids farms of the Minnesota Agricultural College, and at the
State Agricultural College of Utah, at Logan. During the present year
arrangements have been made for extending the work, the new stations
including the agricultural colleges of Texas, at College Station; Okla-
homa, at Stillwater, and Montana, at Bozeman.

The basis of these experiments is the following agreement, prepared
in the Department of Justice by request of Secretary Morton:
AGREEMENT made this 24th day of November, 1896, by and between the Secretary of

Agriculture, hereinafter called ‘‘the Secretary,” and the Board of Regents of the
State Agricultural College, hereinafter called ‘‘ the College.”

I. The College agrees that a parcel o1 parcels of land of said college, located as may
be hereafter agreed upon, and not exceeding twenty-five acres in the whole nor ten
acres for the first year, shall be placed under the absolute control of the Secretary to
enable him, acting through the appropriate otticials of the Department of Agricul-
ture, ‘‘ to experiment and continue an investigation, and report on the subject of
forestry and timbers, for traveling and other necessary expenses in the investigation,
and for the collection and distribution of valuable amd economic seeds and plants,”
in accordance with the provisions of an act of Congress of April 25, 1896, entitled

36

‘‘An act making appropriations for the Department of Agriculture for the year end-
ing June 30, 1897.” :

II. The Secretary agrees that he will furnish suitable plans for the planting of trees
as wellas of all material for planting; that he will direct the care and management of
the trees so planted; that such planting and subsequent care and management shall
be under the immediate supervision of an officer of the said college or of the Division
of Forestry, as the Secretary may determine, said officer to be under the direction of
the Chief of the Division of Forestry; and that the labor on said land, being fur-
nished by the said college as it is hereby agreed that it may be, the same shall be
paid for by the Department of Agriculture on properly certified accounts in the man-
ner provided for by the rules of said Department.

III. This agreement is to continue in force until terminated by the Secretary, or,
if not sooner terminated, until the experimental stage of said forest plantation is
past; and upon its termination all improvements upon the land covered by this
agreement shall become the property of the College.

9
Secretary of Agriculture.
THE BOARD OF REGENTS OF THE AGRICULTURAL COLLEGE.

, Secretary.

OBJECTS.

Several lines of inquiry have led to the establishment of these forest-
tree planting experiments. Detailed knowledge of successful forest-
tree planting is very meager in America, and in the treeless regions,
where more planting has been done than within the forest area, suc-
cessful methods of selection, planting, and treatment are yet to be
formulated. Such facts as have been proven by experience stand iso-
lated; no rules of procedure have been determined. Hach planter has
used such materials as were nearest at hand, and followed methods
based not upon a knowledge of trees and their needs, but upon his
experience as a farmer.

Thus, the light requirement of species and their judicious mixture
have had no place in “‘tree-claim” planting. The experiments which
the Division of Forestry has undertaken have as their objects the
determination of the adaptability of our principal economic species to
the plains, and successful methods of planting and after treatment that
shall be within the range of the average farmer. It is hoped that from
these experimental plantings, though they cover but limited areas,
results may be gained that will prove practicable in larger operations
should opportunity come for undertaking them.

From the passage of the ‘‘timber-claim” act of 1872 until now the
usual custom in the West has been to plant trees of one species in an
entire grove, with wide spaces between the trees. Even when more
than one variety has been used the custom has been to plant the
several varieties in groups by themselves.

It is proposed in the course of these planting experiments to under-
take methods which may, in some instances, be at variance, not only
with established practice, but which even give seemingly little promise
of success; for it is believed that much may be learned in the way of
negative results if the cause of failure is found. The fundamental
purpose of these plantings is to secure a sound basis for future practice,
and hence a wide latitude will be permitted in planning the experiments.

3”
BOTANICAL LIST OF TREES USED IN THE PLANTING EXPERIMENTS.

CONIFEROUS SPECIES.

Scientific name. Common name.
1. Pinus strobus. White Pine.
2. Pinus resinosa. Red Pine (Norway Pine).
3. Pinus ponderosa var. scropularum. Rock Pine (Bull Pine).
4. Pinus divericata. Jack Pine (Banksian Pine).
5. Pinus sylvestris. Scotch Pine.
6. Pinus austriaca. Austrian Pine.
7. Larix laricina. Tamarack (American Larch).
8. Larix europea. European Larch.
9. Picea canadensis. White Spruce.
10. Picea excelsa. Norway Spruce.
11. Pseudo-tsuga taxifolia. Douglas Spruce.
12. Abies concolor. White Fir (Silver Fir).
13. Juniperus virginiana. Red Juniper (Red Cedar).
BROAD-LEAFED SPECIES.
14. Juglans nigra. Black Walnut.
15. Populus tremuloides. Aspen.
16. Populus deltoides. Cottonwood.
17. Populus certinensis. Russian Poplar.
18. Betula alba. European White Birch.
19. Betula lutea. Yellow Birch.
20. Betula lenta. Sweet Birch.
21. Ostrya virginiana. Hop Hornbeam (Ironwood).
22. Castanea dentata. Chestnut.
23. Quercus alba. White Oak.
24. Quercus macrocarpa. Bur Oak.
25. Quercus prinus. Chestnut Oak.
26. Quercus platanoides. Swamp White Oak.
27. Quercus rubra. Red Oak.
28. Ulmus americana. White Elm.
29. Morus alba tatarica. Russian Mulberry.
30. Liriodendron tulipifera. Tulip Tree.
31. Prunus serotina. Black Cherry.
32. Gleditsia triacanthos. Honey Locust.
303. Robinia pseudacacia. Locust (Black Locust).
34. Acer saccharinum. Silver Maple.
35. Acer negundo. Boxelder.
306. Fraxinus americana, White Ash.
37. Fraxinus lanceolata. Green Ash.
38. Catalpa speciosa. Hardy Catalpa.
39. Artemisia abrotanum var. tobolskia- Artemisia.

num.

Note.—The scientific and common names of trees used in this bulletin are those
adopted in Forestry Bulletin No. 14, Nomenclature of the Arborescent Flora of the
United States.

Following is a list of the plantations made by the Department thus
far, with notes on the stand as reported by the several professors
of horticulture directly in charge of them. The mixture adopted in

38

the several plats is shown by diagram, and a careful study of these
diagrams will suggest to the reader a suitable mixture of such species
as he may have available for his own planting.

KANSAS.
(Agricultural College Farm, Manhattan.)

At this station the college had already planted about 10 acres in
forest plats, a part of which was turned over to the Department for
underplanting, together with 6 acres of unplanted land.

t
UNDERPLANTING.

About 3 acres had been planted to Silver Maples, most of which
had begun to fail when the division assumed charge of the work, in the
spring of 1896, which gave an opportunity to establish a growth of
conifers in the protection of the maples. The grove was planted
between twenty and twenty-five years ago, the trees now averaging
about 40 feet high. Very few of the trees were in perfect health,
but there was a sufficient stand to make an almost continuous shade
over the plat. A scattered undergrowth of Hackberry, Gooseberry,
Prickly Ash, Dogwood, Elder, Buckberry, native Red Mulberry, Red
Elm, White Elm, Catalpa, Chestnut Oak, Red Bud, and Sumach has
sprung up among the trees since cultivation was stopped. <A slight weed
erowth and some grasses also occur, making in all considerable soil
cover.

The location is on the slope and crest of a slight hill, the crest being
the usual high level of the rolling prairie. The soil is the black loam
common throughout the West, underlaid with a coarse gravel or broken
limestone mixed with clay, below which is stratified limestone. On
the crest of the hill the soil is very thin, the land being the poorest on
the college farm.

The following trees were planted in the maple grove without disturb-
ing the soil cover: 618 Scotch Pine, 12 to 18 inches high, transplanted;
545 Rock Pine (Bull Pine), 6 to 10 inches high, wild seedlings dug in
Rocky Mountains; 1,155 Norway Spruce seedlings, 6 to 10 inches high,
nursery grown; 1,235 Douglas Spruce, 6 to 10 inches high, dug in
Rocky Mountains, and 257 Bur Oak, 12 to 18 inches high, nursery
grown; total, 3,810 trees.

The stock was all in good condition and was planted in with spades.
At first there seemed promise of a good stand, Professor Mason report-
ing 89 per cent of the trees planted alive June 17, but the long hot
summer played serious havoc with the young trees, and the report of
October 27, at the end of the growing season, showed but 11 per cent
of them living. This heavy loss is attributable in part to the too dense
shading of the Maples, but it is probable that the great demands of the

a9

Maples on the soil moisture was the real difficulty. The land was filled
with the roots of the older trees, leaving but little opportunity for the
conifers to become established.

This experiment having proved a failure, the Maples were again
underplanted in the spring of 1897 in the following method (the plat
was cleared in strips, as indicated below):

Rods No r th

SL (A
YL LLLLL IL LILLIE LLL LLL LLLL ILL LELILLLLLLLLL LD
EA PLLIIZLIZZZILIZLIELLEL LLLLLLLLLLLLLLLLIL LLL LLLLLELLEL LLL LL LLL

eres S|
MMMM
Pee
EOL Me

oo
MM
Pear

:
[MATE ZZ

Uy ZH)

South

Fie. 1.—Diagram of underplanting in Kansas.

- One-half of all the cleared strips was grubbed, plowed deep, and
thoroughly cultivated before planting, while from the other the trees
only were removed, leaving all undergrowth. In the last half of April
the cleared spaces were planted with 1,831 Scotch Pine and 216 Green
Ash seedlings, set 4 by 4 feet. Of this planting, 44 per cent was
reported living in the plowed land and 32 per cent in the unplowed
land on June 30. In October, at the end of the growing season, 99

40

Scotch Pine and 93 Green Ash were alive in the plowed portion of the
strips, and 143 Scotch Pine and 83 Green Ash in the unplowed portion,
a total of 20 per cent of the whole number set in the spring.

PLANTING IN GRASS.

In the spring of 1896 a plat of one-half acre was planted in the
unbroken grass land, no preparation whatever having been given
the plat. The land is on the crest of the hill and is unfit for cultiva-
tion, the soil being a gravelly clay underlaid with limestone. Blue joint
(Andropogon sp.) and other bunch grasses make a good growth in it.
The trees were set as near 4 by 4 feet as possible without marking the
land, and the holes were dug without disturbing the grass cover unnec-
essarily. The ground was so full of stones as to make planting diffi-
cult. One thousand two hundred and nine trees were used—915 Scotch
Pine and 294 Rock Pine—both in good condition at planting time. On
the 17th of June 80 per cent of the Scotch and 97 per cent of the Rock
Pine were alive, and on October 27, 1896, 60 per cent of the Scotch
and 21 per cent of the Rock Pine survived. In the spring of 1897 the
Scotch Pine were replanted, and on June 30 the count resulted in 726
Scotch Pine and 60 Rock Pine. In October, 1897, a count resulted
in 673 Scotch and 26 Rock Pine, 58 per cent of the original planting.
The trees seemed to be well established, many of the Scotch Pine having
grown over 12 inches during the season.

This experiment promises to be a success, since 58 per cent of the
number that were originally planted survived the second summer.
Compared with either the underplanting noted above, or the field
planting which follows, this planting in the unbroken grass lands cer-
tainly gives very favorable indications. It should be observed, how-
ever, that the grasses in this rocky soil do not form a thick sod, as is
the usual condition in the prairies. Professor Mason writes of this
plat, under date of June 30, 1897, ‘“Sumach is growing up thick in
places, forming a good nurse crop for the pines (Scotch). In fact, they
are making a better growth here than in any other plat. Some have
grown 18 to 20 inches this season. The Rock Pine were not replanted
in this plat, and the last year’s trees do not seem to be growing well.”
It has been observed at other stations that wild plants of the Rock
Pine (Pinus ponderosa scopulorum) are difficult to establish and of slow
growth the first few years.

FIELD PLANTING.

In April, 1896, a plat of 1.11 acres, occupying the crest of a ridge,
soil very thin, clay loam mixed with gravel, with gravel subsoil on
limestone, was planted to the following species: 99 Bur Oak, 99 Iron-
wood, 391 Bird Cherry, 607 Donglas Spruce, 499 Norway Spruce,
697 Rock Pine, 782 Scotch Pine, and 3,128 Jack (Banksian) Pine. The

Al

Ironwood and Bird Cherry were in bad condition, having gone astray
in transit; the Jack Pine were wild seedlings, dug in the Minnesota
pineries; the Rock Pine and Douglas Spruce were wild Rocky Mountain
seedlings, dug in Pueblo County, Colo., and the remaining trees were
nursery stock. All were carefully planted with spades.

On June 17 the conifers were reported a good stand, being 72 per
cent of the number planted. October 28 Professor Mason reported 38
per cent of those planted alive—Jack Pine and White Spruce having
made a stand of 56 and 54 per cent, respectively.

In April, 1897, the blanks in this plat were planted with Artemisia,
Tulip Tree, Norway Spruce, and Scotch Pine, and on June 30 the plat
contained the following trees: 1,225 Artemisia, 655 Scotch Pine, 43
Rock Pine, 1,580 Jack Pine, 467 Norway Spruce, 165 Tulip, 3 Oak, 50
Douglas Spruce; total, 4,188. In October, 1897, a count of this plat
resulted: 1,175 Artemisia, 620 Scotch Pine, 7 Rock Pine, 1,418 Jack
Pine, 293 Norway Spruce, 117 Tulip, 2 Oak, 50 Douglas Spruce, the
total being 58 per cent of the original number planted.

It will be observed that in this plat, which has received thorough
cultivation since it was planted, the Scotch and Rock Pines have not
made as good a stand as in the grass plat above noted. It may be that
in this stony soil the protection afforded by the tall bunch grasses is
more beneficial than cultivation, the grasses not forming a compact sod.
The conditions noted are common on the bluffs along the Kansas rivers,
but it is believed that the location is in no sense typical of the prairies
away from the rivers, nor of the plains in the western part of the State.
Regarding the trees set last spring (1897) in this plat Professor Mason >
says: ‘*The Scotch Pines were reset partly from nursery stock received
this spring, and partly with trees that had grown for a year in nursery
rows here. Of the latter scarcely any died.”

PLATS PLANTED IN 1897.

Four plats of somewhat less than 1 acre each were planted in 1897.
These were all designed with light-foliaged trees as nurses, and in all
of them spaces have been left for the conifers, which will be planted in
hereafter, as indicated in the plans. These piats are on high prairie,
the soil somewhat deeper than in the plats above noted and quite free
from stones, underlaid with limestone. The land was formerly occupied
by an orchard, which had been cut out three years previously and the
field planted to small grain, followed by corn. In the fall of 1895 it was
plowed 10 to 12 inches deep, and was in fine condition when planted
in April, 1897.

42
PLAT A.—3 by 3 feet, 4,840 trees per acre.

QO “A'S BAS SR iAs = Hip eaan ©

A: At -® ADEA SRA HEAD A eA es

S° AvP, SACRE AG Seer

Ai AS A AS AeA Ae

Pye CES Ass Pelee

JA dA LAS tA ere Auer e ARR Ateneo

By Ae St ASR AS he Aaeea

Nee dA: Ac JA 2 VAS CAs Agee

O° APO AS i Aa Se Aan ®
A Artemisia 2h eh NE Sete 3, 630
B=White‘Hlm. 23 222 82.2552 eke ee Sete ke ee 378
O—Bur Oale 2c ieee Leeds Bets e es se eee 15
P—Scotch Pine |... s..2 jes SS oe Oe eee es = Ses Ee eee 379
S— White Spruce 263 255.2. Secs eee eae eee ee eee eee Poo ase 378

The Artemisia, although having very fine foliage, branches freely
from the crown, and makes a much denser shade than was supposed it
would, from descriptions received when the cuttings were ordered. It
is much the most vigorous grower of any plant included in these experi-
ments, making frequently a stem 42 inches long from the cutting the
first year and spreading 4 to 6 feet. It can not therefore be used in
such dense planting, but has an advantage in covering so much
ground at once. The Elm and Spruce are more shade enduring than
the Pine, and have been so arranged as to form two-thirds of the plat
after the nurses have been removed. In case Artemisia threatens to
shade out the slower-growing forms, it will be cut back sufficiently
to protect the others. The Scotch Pines were set in at the same time
as the others, transplanted trees 10 to 15 inches high being used.
Spaces for the White Spruce were left, and this species will be planted
in next spring, so as to have the protection of one year’s growth of the
remaining species.

On June 30 a count of the living trees in the plat resulted as follows:
2,395 Artemisia, 19 Oak, 40 Sweet Gum (set by mistake in place of
Oak), 279 Elm, 190 Scotch Pine, the total being 68 per cent of the num-
ber planted. Dry weather immediately following the planting was the
cause of the poorstand. In October, at the end of the growing season,
a count of the plat resulted as follows: 2,417 Artemisia, 163 Scoteh
Pine, 55 Oak and Gum, 246 White Elm, or 62 per cent of the number
planted. Jax

Ah) onde reat A

43
PLAT B.—3 by 3 feet, 4,840 trees per acre.

Tap aes ee ines Aas bro See Pit AU ip: =]

ne

P

A

tT On rR Hy PH wt OW Fb
Hoty Pe ee Tee ke
tow b> te ew bP oe oe
ee ee
ee ee ee -
te eee ee ee
deter wy oe Pe ee
a ss
Sn
twee rw ee Pe we ok
nr
rH On FH FP HW we WH Of
Ss

PSSST sch Ras Khe od Gelb Be Bess So eSB BER O AEN Ae Aenea ioe ee 3, 630
OR Ola eA Dive oO) peerrenta ne ertetets stern oes fe an ieticilon esto soto sede es bade chee 50
Ae AIM ERIC Ate ar hy eye Ht eae ee ee eS a eee Seg ian Tyee ter ene 55D

The Aspen were one year seedlings, dug in the woods near Sturgeon
Bay, Wis., and were slightly mixed with Cottonwood. The Oaks were
nursery grown, 10 to 15 inches. The Larch were nursery-grown seed-
lings 10 to 12 inches; they had started growth in transit, and were
therefore not in good condition at planting time. Spaces were left for
the remaining conifers. It will be observed that three-fourths of the
mixture are Aspen—light foliaged, light-demanding trees. Of the
remainder, over one-half are also of light-demanding species, the only
shade-enduring forms being Red Cedar and Douglas Spruce. This plat
is designed to illustrate the effects of planting a great excess of light-
demanding species together as nurses for evergreens, which are sup-
posed to require the protection of other trees during their infancy.

On June 30 the living trees were 2,752 Aspen (and Cottonwood), 260
Larch, 33 Oak, or 74 per cent of the trees set. In October the living
trees numbered 2,367 Aspen, 5 Larch, and 24 Oak, or 56 per cent of the
original planting. It is hardly to be suppoged that the American Larch,
atree of the northern swamps, will be useful so far south and under

44

conditions so different from its habitat. The species was planted at
the Kansas, Nebraska, South Dakota, and Crookston, Minn., stations
to get an indication of its possible cultural range in the plains.
PLAT C.—3 by 3 feet, 4,840 trees per acre.
° B PB 2 BB Pee eee

RD EB AP Ee pba

iB. UP Po. 2B Ree as

P. DD. By ACP GDA

B—Birch (Yellow and Sweet mixed) ---2 2-2 22-22. ascent 1,815
P—Aspen (and Cottonwood) 22cm nea aera 1, 815
O=Oak (24 by 36 feet) 2s = 2 a ae w= mare ea 50
R—Green ASh / 2223. 2522 a5 Soe aoe olen 2 eke oe eee nie ne eee ee 252
©—Hardy Catalpa .2- 2. .2- 2852-22-26 cc tee cee oe ase eu
A=SAustrian JPine; 2 ato 2 oie erin scons “dig ite we oe Se DGS tee ee
D—Douglas Spruce’... | 22 (22 522). as cee ie ee 303

The Birch and Aspen were one-year seedlings from the woods at
Sturgeon Bay, Wis. The Catalpa and Ash were one-year seedlings
nursery grown. The Oaks were 12 to 15 inch nursery-grown trans-
plants. Spaces were left for the Pines and Spruces to be set in the
following year. The plat is designed to test Aspen and Birch, light-
demanding trees, as nurses for the others, which are so arranged that
the light-demanding Pine and Ash shall alternate with the shade-
enduring Spruce and Catalpa.

On June 30 there were living 1,435 Aspen and Cottonwood, 850 Birch,
244 Catalpa, 237 Green Ash, 40 Oak, or 69 per cent of the trees set.
The count of October resulted: 1,268 Aspen, 710 Birch, 247 Catalpa,
237 Ash, 40 Oak, or 61 per cent of the number planted.

45
PLAT D.—3 by 3 feet, 4,840 trees per acre.

Php P oy ine Pes

By Re, Bare. Br lk. 6B a6

B Be At Be vA BSA

Bee eis ao by CB AB

ba os

Bete). Bb. kB. C

iBbawAs, = By A. B BA

Beier ee beet | Bese

Pee ee Be pe eee eB
IP ASIDE coor on cose nce cess Cobo Goose s Sobueobbo HSd6 Se CODOEHES Beaabucead 6eses5e 605
ID] coc SoogonSs Seed 6630 Sede Cae US Oe OE DOCG EA See ae EOE ae eee iam m Rar rye 2,117
Jeo MP HSTEDNS Bh ate SSeS CG Se i PS a eS I at Re 605
Nebo m inp ener rene. See ono. ese e Ne ho te caecd dos. oe be 151
S=COURIITA C844 S555 508 See So Bo CCU DISC OE Oe IE IE oe a aan aa ae ane en Lil
11! COG bre 6 Ss 46 SS bss cigg Gos BeBe See ea ee en es 303
aie COC Kelli MOM ae eet eae tae ep crionis Sos eee Lak eles toed ke 303
i ANN OLicanmuare men eee ere he ee ke Se ares eet Se 303
DOME nee ne eer eats ee eee eget ee Soe bets ae 302

In the above scheme, in the third row from the top, reading across
the page, and in corresponding rows throughout, A and B should
change places, but the plat was planted as indicated in the scheme.

In this plat the principal nurse tree is Birch, so arranged that part
of the Birch can be retained as permanent trees. Blank spaces were
left for the Red Cedar, Rock Pine, and Silver Fir.

On June 30 there were living 468 Aspen, 1,153 Birch, 85 American
Larch, 125 Catalpa, 355 Artemisia, 100 Elm, or 61 per cent of the total
number planted. In October the plat contained 830 Birch, 395 Aspen,
046 Artemisia, 82 White Elm, 8 Larch, 122 Catalpa, or 47 per cent of
the total number planted.

NOTES ON THE KANSAS PLATS.

In the plats planted in the spring of 1897, light-demanding species
viz, Aspen, Birch, and Artemisia, have formed three-fourths of each
plat. The Aspen is a light-foliaged tree which does not make a dense
shade, and is short lived. It is believed that it will afford the requisite
protection for Pines, Spruces, Firs, and Cedars, until they become
established. With the exception of a few Oaks, all the permanent trees
in Plat © (that is, permanent as compared With the nurse trees, which
are only intended to stand about ten years) are conifers. In the

46

remaining plats hardwoods and conifers are mixed. In all the plats
it will be noted that each permanent tree is entirely surrounded by
nurses. When the nurses are removed, the plat will show an alterna-
tion of comparatively light-demanding with shade-enduring kinds.

It must be understood that the shade endurance of different species
is relative. For instance, in Plat A, the trees aside from Artemisia
stand as indicated in the accompanying diagram:

OS) he re
Sele elDy = ts)
1 1B) gS) IE
Ee Seba
ae ee Ties

Oak and Pine require most light, Elm less than these, and Spruce least
of the four; and the two light-demanding species are separated by the
more shade-enduring forms.

It is well to introduce a few slow-maturing species, such as Oak,
Black Walnut, Hickory, ete., in plantings where the soil is adapted to
them, and by placing them at wide intervals the general development
of the grove will not be affected by their slower growth. While it is
true that the Black Walnut is a rapid-growing tree, it does not attain
its full value until very old, as compared with Elm, Catalpa, Locust, ete.

Measurements of growth. ©

The following measurements of the growth of trees set in 1896 and
1897 will give a general idea of the action of the species named under
the conditions prevailing at the Kansas station. The measurements of
trees planted in 1896 give the total growth for two years, while those
for 1897 give the length of new wood made in that year only—only the
leading branch being measured. The measurements were taken July
TSS 7 :

Growth for 1896 and 1897.

Species of tree planted. Longest. | Average.

Trees set spring of 1896. Inches. | Inches.
Scotch Pine: os... 26 joe S eo eye Bee see baie sale ene eee RE ee se ene ee eee eee eee 20 | 9.3
Rock Pine; sfhe0 se fack ee a ie ee eee ee ee eee 7 5.2
DACKIPAN Of ecm cwnna seo -cocsceeRe caer wenaid J iige SRC Ri ee eee ane ee ee eeeee 18 10.5
NOL WAY SPLUCO oo 5 oasis on ow wate weave ew cle Sees ne oie ee ee le sine ree © eles 10 5
WouglasiSpruce os fe oe Seren Shee 2 arete Siete ae ere ee eat Oa eee oe reer Uta 4.1
AST UOIDISLA 2 ote io che cre olen ete eintevsie Sob ice ois Spe ave Cape ON Eee eae ar en 60.5 | 51
Molipyinee jj st8. es . Sscke so eke ee SV aa eta ee eee eee ee Oe ee eee 24 14.6
Bor Oak og petiios wie Seon sels Saaaise b's Hee Barats tebe eee Se ee ee ene 10 9.8
1103 0h 010) Eee eas ae ee CE EES EE a Os ues ho Seda ams auosese we 10 8.5
scotch Pine (set in grass plat).2.-228- so.saceoee see ene ee eee ee eee eee 28 16.5

Rock Pine (setinfrass plat)! ss22,. =k eticdeeasee oe ee Seer ee ee eee See ae 4 2.1

AZ

Growth for 1896 and 1897—Continued.

Species of tree planted. | Longest. Average.

Trees set spring of 1897. Inches. Inches.
Sagigih EMG. coc cnc letce: Meo aie ee i En ree 8 | 6.5 3.8
Thad) Ged Pr (HD ITER GI at 5) SR a ea eC ee a 5G 41
LET Re sogeedteckne +47. RoAS oe eee CEOS eee eae ee eR Sen Sor pes 25 26
UPPAUDR, -o.csccscoscecebessce ceesectosécuscesssbeoccspsbaces seescee se cee os eee beaks 24 14.5
(STG@GH AWN. oc chest tnotet) Soe COGS epee aC See SBE SOC BESS Eee = ae ae nee as se | 10 6.8
[SIRO D ccc secre bee Sonoeen6 CbOnSU RSH CU OHOROCROT OC OC OOEOEAY or Eee rre Cee een one Be 10 6.6
(DUG oo. ace sel ceo se eccseerscoccs snes ee eeecor ce == Cee e = ECORSE BE ape abe eS seo-ccos 22 12
AUDI = 2 2 oe cence eeesecsrcs ceccece Coc Scr cgeu Dade Ree So eUDCOSEEOOS EEE are see sore 57 38.1
QO (TISRE WIEAGIE SiG OGE) Ste eS 6 CGS SEAS ee See Seen ee eee eee 31 11.3
JT) NGUDS LS 13) eA ce te deco soca ost he 6 Soe ce eC UR eS See Re eeE Ee Rene aaa 47.5 21
Populus (Blks. C. & D.)..-.--- Boe SSSR ae SPS Seah tS oe tN mata 3 SS Te. Se eee 25 13.8

NEBRASKA.

For the planting experiments at the State University experiment
station a field was set apart on the east side of the university farm,
adjoining a 15-acre grove of pure-planted Cottonwood. The land slopes
to the east and north and the soil is the typical prairie of the eastern
part of Nebraska, a black loam, underlaid to an unknown depth with
a rather stiff yellow clay. The fact that the Cottonwood, which occupy
the low land adjoining the forest plats, has made a splendid growth
(averaging 60 feet in height at 25 years of age), and form one of the
best pure-planted groves of this species I have ever seen, indicates
that the subsoil is sufficiently porous to permit perfect root development,
while the remarkable growths herein recorded indicate generally favor-
able conditions, at least during the past two years.

The field is divided into 1-acre plats, ten of which have been planted
thus far. In 1896 five plats were planted, the nurse trees being all of
shade-enduring species. In 1897 five acres were planted, in which the
nurse trees were all of light-demanding species. In the 1896 plantings
all the trees were set, while in the 1897 plantings blank spaces were
left for the conifers, which will be filled the coming year or later. It
is hoped that the two sets of plats, planted on such opposing bases,
will demonstrate the advantages and disadvantages of both. The
plantings of 1897 had for their especial purpose the creation of condi-
tions favorable to evergreens, and must be considered from this point
of view.

PLANTINGS OF 1896.

Soil preparation.—The land for plats 1 to 5 was ordered plowed 12
inches deep, but owing to the excessive dry weather of the previous year
this was impossible. The plowing averaged about 6 inches deep, being
very irregular. The plats were thoroughly harrowed in the spring and
were in perfect condition, aside from the shallow plowing, at planting
time. The soil was fresh when planting began, having had a good rain

48

a few days before. There was no rain after April 15 until April 28,
when 1.2 inches fell. The conifers were planted between showers
following this heavy rain.

Condition of stock.—All the stock, except as indicated, was nursery
grown. The European Larch were leafed out fully one-fourth when
planted. The Cherry buds were showing green, the Elm buds were
much swollen; all other stock dormant and in good condition, except
the Birch and Black Locust, neither of which started well. The age
and size of stock was as follows:

Russian Mulberry, Silver Maple, Honey Locust, Hardy Catalpa,
Black Cherry, Black Locust, and Tulip, one year, 10 to 18 inches.
White Elm, Green Ash, White Ash, one year, 6 to 10 inches. Sweet
Birch (poor). Canoe Birch, Bur Oak, 12 to 18 inches. Rock (Bull)
Pine, Douglas Spruce, wild seedlings, 6 to 10 inches, dug in mountains,
Beulah, Colo. Jack Pine, wild seedlings, 8 to 12 inches, dug in woods,
Carlton, Minn., Scotch Pine, nursery grown, transplanted, 12 to 15
inches.

Date of planting.—Planting began April 15 and was continued to
April 20, when all the trees except Jack and Rock Pine and Douglas
Spruce were set. These were planted April 28 and 29.

PLAT 1.—2 by 3 feet, 7,260 trees.

S. (Ay D SASS Aa Pee

MB? ME Bei Bie

Sri perl F ©) Bp Pre ak:

M. BM. Bo. We ieee

D° VAS? VAS ID ese See

MBs oM Mi 2B Lehi

Ly 2H Cone i Gre on

MAB ve MS Beye

S (A « DAL SARA:
M—Russian Mulberry -: ./ ~-2'2o22. 52.2 22 Lee eee 1, 815
B—Jack Pime..... 2.225: 22-2 eek tt Se ee eee 1,815
D—Douglas Spruce -... 2.2: 2 ee eee 454
S—neotch Pine -... -.. 22 6)2 22.252 oie ee ee ee 454
A—Sibyer Maple . .- 2. 2/2222 .v. be oo ee ee 907
E—Puropean Larch .- - 2. 226 4252 3 52 ee 908
is—Honey, Locust... - 2 2222: 2-5 Deo ee 454
C—Hardy Catalpa...-....2. 2.2 522-22 eee eee 453

Two hundred and forty-three Artemisia cuttings were substituted in
nine rows for Jack Pine.

49
Reports.

Professor Card (Horticulturist, Nebraska University Experiment
Station), May 30, 1896: “30 per cent of pines and 40 per cent of
larches failed; others a fair stand.” June 12, 1896, result of count of
living trees: 1,772 Russian Mulberry (98 per cent), 992 Jack Pine (63
per cent), 162 Artemisia, 413 Douglas Spruce (91 per cent), 298 Scotch
Pine (63 per cent), 872 Silver Maple (96 per cent), 642 European Larch
(71 per cent), 126 ie Locust (28 per cent), 41 Tulip ( substituted for
Honey Locust), and 405 Catalpa (89 per cent).

October 1, 1896, result of count: 1,779 Russian Mulberry, 833 Jack
Pine, 145 (aie 847 Silver Maple, 398 Catalpa, 151 Honey Locust
(and Tulip substituted), 296 Scotch Pine, 392 European Larch, 233
Douglas Spruce; or 70 per cent of planting.

April 15, 1897 (count of conifers only): 287 Scotch Pine, 756 Jack
Pine, 206 Douglas Spruce, 289 European Larch.

The blanks in Silver Maple, Catalpa, Scotch Pine, Jack Pine, and
European Larch were replanted in the spring of 1897.

June 30, 1897, result of count: 1,800 Russian Mulberry, 898 Silver
Maple, 428 Catalpa, 193 Honey Locust (and Tulip substituted), 318
Scotch Pine, 131 Douglas Spruce, 1,004 Jack Pine, 146 Artemisia and
154 European Larch; or 67 per cent of the original number planted.

In July this plat had grown so dense as to render further cultivation
impossible, and Dr. B. E. Fernow, on inspecting it at this time, gave
orders to head in the Mulberries and Maples to prevent their shading the
conifers too much. The frontispiece is a picture of this plat taken in
full leaf.

Count reported October 12, 1897: 1,560 Russian Mulberry, 590 Silver
Maple, 378 Catalpa, 50 Tulip, 221 Scotch Pine, 155 Douglas Spruce,
820 Jack Pine, 317 European Larch; or 56 per cent of the original num-
ber living. Discrepancies in the counts will be observed. No Honey
Locust is reported in this count, and more Larch than were noted in
the last count. Inaccuracies may be due to carelessness on the part of
the employee to whom the work was intrusted.

Whether such close planting is advisable is yet to be demonstrated.
The principal factors to be considered are (1) cost of stock; (2) cost of
cultivation; (3) will crowding be too great, necessitating more labor in
thinning, or protecting the permanent trees, than would have been
required for cultivation at wider intervals, say 4 by 4 feet? (4) will the
comparatively limited amount of soil moisture sustain such an intri-
cate root system as will result from the thrifty early growth of so many
trees?

The questions of cost of stock and cultivation are so entirely local
that each planter must determine them for himself. If he can gather
his own seed from near-by native trees, ayd grow his seedlings one
year, the cost of stock is reduced to a minimum and becomes practi-
cally nothing. Of course additional labor in planting, at a season of

20191—No. 18

50

the greatest activity on the farm, must be considered also. The effect
of close planting on the trees and on the soil can be determined only
by several years of observation. There can be little doubt that the
many days of bright sunshine and the almost constant winds will affect
tree growth very differently from what would be observed in the East-
ern States.

PLAT 2.—38 by 3 feet, 4,840 trees.

BM 2B Bee VES vie ev

M 20. 2 sD MS Pee aiea@

Bo OM] Bee eB ia vies

M DM -<C™AM DMC D

B SM (Bora Ba Mie seve eV

MioPy Ma sD Mi Paes iaee Dae

BEM 7B MB vie ev ave

MD MC a ME sD Mae C ravi

lope Wi Rios iP ei Nabi ley ty 18) MYL

M O82 MD Me Pee Dy eves @
M—Russian Mulberry. .---.-- eee nytt seh ovine oe Rares Mee eee ee a ae eee 2, 420
B—Boxelder oi... 2. 2522.0) ick Gain tae Shae eens See Ser ee eee Re ees 1, 210
C—Black (Cherry -2 ose ce SORA ee Sn So58 SUG Sasso d oes sou: 303
O—Bur Oak: 2. 52202. 5 bP ign re hs See Be Oe ee 75
P—Rock Pine? 222 22s fb eek ow ee sees See ee ee 227
D—Douglas Spruce -- 222220) S66. os eee eee ee ee eee io oe 605

In this plat (Plate II) Boxelder and Russian Mulberry, the nurse
trees, make up three-fourths of the trees. Of the remainder, three-
fourths again (Douglas Spruce and Black Cherry) are shade enduring
to a greater degree than the Pines and Oaks. Should the Rocky Moun-
tain conifers become established and prove adapted to the prairies,
this mixture will prove an excellent one.

Reports.

June 30, 1896, result of count: 2,251 Russian Mulberry, 934 Box-
elder, 158 Artemisia (substituted for Boxelder), 276 Douglas Spruce,
96 Rock Pine, 295 Black Cherry, and 68 Bur Oak; or 84 per cent of
total.

October 1, 1896, result of count: 2,387 Russian Mulberry, 935 Box-
elder, 134 Artemisia, 23 Rock Pine, 348 Douglas Spruce, 280 Black
Cherry, 45 Bur Oak; or 88 per cent. (A discrepancy will be noted in
these two counts, probably owing to greater care in the latter.)

51

April 15, 1897, count (of conifers only): 304 Douglas Spruce, 9 Rock
Pine. The Spruce and Oak were replauted in the spring of 1897.

June 30, 1897, result of count: 2,377 Russian Mulberry, 948 Box-
elder, 269 Black Cherry, 64 Bur Oak, 120 Douglas Spruce, 10 Rock
Pine; or 78 per cent of original planting.

Count of October 12, 1897: 1,632 Russian Mulberry, 903 Boxelder,
100 Black Cherry, 45 Bur Oak, 209 Douglas Spruce, 117 Rock Pine;
or 62 per cent of original planting. Compared with the count of June
00, it is evident that errors have been made.

PLAT 3.—3 by 4 feet, 3,630 trees.
Vie vets Me be Me A, Me
Cae vieeAS MY = MoH MC
VIS = VE

el
ts
ee

L Mi
Aeevier Yo hi Me ©: OM A
L

ur ssica teu) OLD yy erates Ses oe se skeet pcos se see ee ote bewed Sas e 1, 815
Vaal DURST DERG No SER SS aoe SOs es See ee ee ee eee 907
(SSE DOE CHITRA ES ee Rai SUI eee ne ee ae 227
ee GO ry LRN oe SASL Se See eee eae ee a a Seo 227
JS SPE BN) bye ae tA G § Bes BE een eee Ee Peed oe ear eee 227
ose VEG TUT: 3 yer 3 Ge) Ee SIR ee ree ee oe ne eS 227

In this plat no evergreens are used. European Larch, a slender,
erect tree, is used with Russian Mulberry as a nurse, and the Larch
should stand until of good post size. It is probable that the remaining
species would have been better disposed had the Elm come between

the Birch and Ash.

Reports.
- June 12, 1896, result of count: 1,803 Russian Mulberry, 573 Larch,
114 Black Cherry, 100 Yellow Birch, 207 Green Ash, and 207 White
Elm, or 85 per cent.

October 1, 1896, result of count: 1,803 Mulberry, 395 Larch, 200
Cherry, 51 Birch, 205 Ash, and 207 Elm. (First count of Cherry prob-
ably an error.) Birch, Ash, Elm, and Larch were replanted in the
spring of 1897.

52

June 29, 1897, result of count: 1,820 Mulberry, 207 Cherry, 198 Ash,
215 Elm, 76 Birch, 215 Larch, or 75 per cent of original planting.

October 12, 1897, result of count: 1,246 Mulberry, 55 Cherry, 150
Ash, 55 Birch, 306 Larch; no report was made of Elm, and the count
is evidently incorrect.

PLAT 4.—2 by 4 feet, 5,445 trees.
A © Chaly pha iC ee wiles
B M-B M BoM; B eves
Ar C@ Ar € AC “AriG As
M: B Mob Me Ba ave
eer Am Che i
BM BM? BS Mie vies
b Ar iy Ar be An bee Arah
M
A

A—Whhite Ash 225 ens toa wa am a alaalal a etait ale eee 171
Deeb bed bY RRS Bae S856 Sh onedao5S60 cos0 Soe 5600 oSac Seaogs saad ceed face c0c2-- gat
Ch=Black Cherry 22 22) s2 \aceie = sei a= aaa oe eee 170
Y—Yellow Birch=-23 -2-.-s--< boos acgned Coos ons Sod coo ces nsoecd S22 Sea oeee 171
(OS Orn eH ERS BARS so deocee cen sqormobocoEnoo dohbocodéacec soncto set eoscossoscss2 680
L—Black Locust =. 22-5 5 -- 2 cc coe ce ceisale oo eian elon ae eee ele ee ee 680
M—Silver Maple ..:: =. -222 2-2 <2 <-2222cs eee eee ee eee eee eee eee 1, 361
B—Boxelder <=: - 2225-252 222226 ceo -oe ene ee cmen = epee ere 2 eee ae eee 1, 361

Ar—Artemisia

In this plat an attempt was made to plant trees of useful timber at
distances of 4 by 4 feet, filling in with less valuable species as nurses—
Silver Maple, Boxelder, and Artemisia. Of what may be called the
permanent trees (those set 4 by 4 feet) two-thirds are of Catalpa and
Black Locust, species especially valuable for post timbers, and which
could be cut out for this purpose when from 10 to 20 years of age, leav-
ing the Elms, Birch, Cherry, and Ash at 8 feet apart to reach a larger
size. Of these four species, the light-demanding Ash and Birch are
alternated with the more shade-enduring Elm and Cherry.

Reports.

June 12, 1896, result of count: 159 Black Cherry, 1,271 Boxelder;
1,227 Silver Maple, 313 Artemisia, 580 Catalpa, 175 White Ash, 165
White Elm, 43 Yellow Birch, and 62 Black Locust.

October 1, 1596, result of count: 145 Cherry, 1,263 Boxelder, 1,201

'g LVId—NOILVINV1d VYSVYSaIN

Bul. 18, Div. Forestry, U. S. Dept. of Agriculture.

PLATE Il.

53

Maple, 308 Artemisia, 637 Catalpa, 161 Ash, 161 Elm, 26 Bireh, and 62
Black Locust.

Blanks in Artemisia were zeset in the spring of 1897.

June 29, 1897, result of count: 150 Cherry, 1,240 Boxelder, 1,185
Maple, 736 Artemisia, 568 Catalpa, 165 Ash, 165 Elm, 24 Birch, and 134
Black Locust.

October 12, 1897, result of count: 114 Cherry, 1,254 Boxelder, 1,165
- Maple, 840 Artemisia, 660 Catalpa, 70 Ash; other species not reported.

PLAT 5.—4 by 4 feet, 2,722 trees.

One be Or eAy OB €

Nese Ma Mei ME

Di AL er. 4 Bi Do Ab EP

ML MaL MLM

Oe tery Ae Oe. | ©

ML MaL MLM

D ASP UE Dp. AUP

Mgr Ma We oh ME
de QELS 2 ok bese be SOE Sea eS Se Se ge er EO 171
PS UIT E: EIT aoe a CRE cae aE Ca a ge 340

White Ash

a Peron ch I ESE Se? ABE SR ea i ar ak I —
SHIDO CLG SOE 5 Se Ui Ce eee es ee a 170
i SULVGrS NEG = ee Sake s ea oe ens Be Sere OE ee ee eee oe 340
Hie DISEOHIE 2p Es EC Nene sep ee ere ois 2 oe Seale ote sn e Seek es Sool es Saades seeds 680
D—Douglas Spruce ..-....-.-- Pe a oly Oh nS oe ak on sin on i oes 170
MES EGe Jains eto. a tea Oe Soe ie ee re ee 340
PPaalROGIE LEIOe see 5 56 ae Sa eee) 17/3)

Tulip, Birch, and Artemisia were substituted in small quantities for
Elm, Ash, Larch, and Maple.

This plat arennied the highest land in the plantation. The reports
have not been satisfactory, as some of the species which are not men-
tioned in the first report are noted later.

Reports.

June 12, 1896, result of count: 166 Oak, 337 Larch, 22 Birch, 95 Pine,
308 Elm, and 332 Ash,

October 1, 1896, result of count: 315 Silver Maple, 93 Oak, 246 Larch,
12 Pine, 96 Douglas Spruce, 171 Cherry, 272 Elm, 332 Ash.

In the spring the blanks in Silver Maple, Elm, Oak, and Larch were
reset with Maple, Artemisia, Tulip, and Larch.

54

June 29, 1897, result of count: 631 Silver Maple, 206 Artemisia, 331
Ash, 204 Elm, 40 Tulip, 174 Cherry, 18 Birch, 476 Larch, 35 Douglas
Spruce, 18 Pine; or 78 per cent of original number planted.

October 12, 1897, result of count: 250 Silver Maple, 340 Artemisia,
200 Ash, 100 Elm, 150 Cherry, 310 Larch; remaining species not

reported.
PLANTINGS OF 1897.

In these plats light-demanding trees are used as nurses, among which
a few Oaks and Black Walnuts were set and blanks left for conifers to
be planted in hereafter. Cuttings of Artemisia were used. Aspen and
Birch were wild seedlings, dug in the woods at Sturgeon Bay, Wis.
The Aspen are slightly mixed with Cottonwood. Larch are nursery-
grown seedlings, 10 to 15 inches high; growth had started in transit,
leaving the stock in poor condition at planting time. Walnut, 1-year-
old seedlings, grown in nursery,

PLAT 6.—3 by 3 feet, 4,840 trees.

A. fi SA A, SAR AS AN

A JAS Fis? ASI Site A Reo:

DA ASE RW CAS NAN AURA eee

TA WAS eeAS areas

AP A UA > AG Ata

AL us AY Ta; eA gS Gace es

AL A eA AS ASAI Neer

AYO BS) SASS Vea) Ba Aes

A AoA CAS SAAT Angee
AR ATCOMISIA. 2 occ). cae Re ose tecet oe ce eeen oo see See 3, 630
P=Rock Pine'(@):.-.2-2 0 2 227
s— White Spruce (a) -.-: 2-5-2: 2e ce SE ee ee 605
L—American Larch ;<.. 5.250. 3222-< 6 Jee ee 303

W—Black Walnut (24 by 24 feet)... 2) a ee 75

aTo be planted in 1898 or later.

eee eee

55

Reports.

June 30, 1897, result of count: 2,466 Artemisia, 182 Larch, 75
Walnut; or 68 per cent.

October 12, 1897, result of count: 2,850 Artemisia, 23 Larch, 70
Walnut; or 73 per cent of number planted.

From the action of Artemisia in other places it is probable that its
rapid growth will prevent its use as a nurse tree; should the conifers
become established, however, they should be able to overcome the
Artemisia, which is a tall-growing shrub, thus saving the cost of any
thinning whatever. Among the conifers it will be noticed that the
light-demanding kinds, Larch and Pine (and the Oaks also), are each
surrounded by the shade-enduring Spruces.

PLAT 7.—3 by 3 feet, 4,840 trees.

PaO k Ds PSs Pa Dy Pow

Rete Eee ek Po Po PP. P

Peer bere ly Pron: Ps. DD

ee bee eee, he. PD P* Pe Rs. BP

eee De OF bani Pas

2d Bee 2] ra el BSE Reale melee SONORA eed ecea 2

eo ieee Dos Rn Po} BD

Peres bee Poy Pe (PoP BP

RaW) Ss. Po DP. O
IE SSASGI oos ode -ise SHE SdB6e URS Ees Sop eRe core BOSD AS Aeeb CSS O oe niber tre cconer 3, 630
Wo Doulas price (dss. oa. -5 = Sas. <5 2+ es Se = oe = = 2 i nie ne 605
PSG CCG BELO) 220 68 Soe SAS Se BBC B ERO BOSS: SOCCOS ORE SE He= EP acer sree re 303
S Stencil ERG hy GS Eee i ee Re Se eee ee en iain eee ee 227

Chestnut Oak..... on

ENS } Swaup White a
ee BI SLE UCI CAR LAE A eee Sen ee en Ae ees eer eer 3

a To be planted hereafter.

56
Reports.

June 30, 1897, result of count: 3,050 Aspen, 15 Oak, 18 Walnut; or
83 per cent.

October 12, 1897, result of count: 2,345 Aspen, 60 Oak and Walnut;
or 78 per cent.

Of the permanent trees in this plat (the Aspen being designed as
nurses), three-fourths are shade enduring (Douglas Spruce and Red
Cedar), and the remainder are light demanding.

PLAT 8.—3 by 3 feet, 4,840 trees.

W BC 4B PSB] CeeBe Ny

B Be lBS Bi ebr2 be babes

SB ..PyBS) BABS

By B 3B 3B 6 Bs be bie

PBC ro BAe ba Omsss ase:

Bo Ba: Beeb Bb abe

SB Ac UBS) bk bea

BBB Bas bbe ble

WBC? Be ee Oe byaawes
B—Yellow Birch. 2. 92.2 2sc% este eee See ee ee eee eee eee 3. 630
W——black Walnut) sos. 2) eee ae For cnc Re SiS ices Se ne ee 15
ME White Ein (a) se ees shee ei ie ck an a 227
P—Austrian Pine (@).o5-25.2 2 Sethe. Shale Fee eee eee - esa eoUs
S—White Spruce (@) 22-25-2263 cease aces = cee cee en ceene eee ee eee eer 302
C=Red Cedar (@) -..2 occ2b pest eae ee ee ee pee eee ee Se eee 303

In this plat Yellow Birch, probably mixed with Sweet Birch, is used
as the nurse tree, and of the remaining species, all of which are now
being grown in nursery at the station, to be set into the plat when well
rooted, the Spruce, Fir, and Cedar are shade enduring and the Pine is
light demanding.

a To be planted herearter.

57
Reports.

June 30, 1897, result of count: 2,814 Birch, 74 Walnut, or 78 per cent.
October 12, 1897, result of count: 2,900 Birch, 70 Walnut, or 80 per
cent. Evidently an error in one of the counts.

PLAT 9.—3 by 3 feet, 4,840 trees.

Debate BB PoP BB

Pease be eee AD: BY Ps

Bee bob PP.“ BB P

Pa eee Do PY BB S.-P- X&

Bee beeeeeke BaP PBB

Rae Deeb Vero oS) Ba x “PD

bee eae by Be Peo Po BBY P

Pewee Scr x Bo DD. PY

beeebowente b> Bb PP BB

Pee beer ee De Boa Ye PS
BSI BNINOIO 2 BSB Sbo eG daa oO CN IS AACE eee eS eo rae rea 1, 815
Pe AGING Sos SoS EES SAA GOS creas IE ne ge 1, 815
2K STNG LENNG (GD) Sebi SSS belo CS Ete mee Ae em a Ae See 302
We SCOLeneie, (G) hee tessa pae ete as Sek eh oe Sake Shue Ss. 302
DP Douclasis peice (a) sa.caeeee sees ce anid Oe obit ese eee wes des ieee 303
SOD S)ORNCO (W ss2 eso CSE is ee COR a OI a ee eee ee me 303

In this plat Birch and Aspen are used as nurses, so arranged that
each permanent tree is bordered on one side (diagonal) by Birch and
on the other by Aspen. Of the permanent trees the Pines are light-
demanding and the Spruces shade enduring.

aTo be planted hereafter.

58

Reports.

June 30, 1897, result of count: 1,721 Aspen, 1,584 Birch, or 91 per

cent.
October 12, 1897, result of count: 1,600 Aspen, 1,550 Birch, or 87 per

cent.
PLAT 10.—3 by 3 feet, 4,840 trees.

i elas U te) ca OL Ot ey 18)

L Be dies sel as

BW: Po aw aa

iB lS ale

PSD PD eae

1 Opa) oy) Piel) Stal ye 3

IP 2 OW 2 OR ENV eee

eB li ii als
IPI) 02) We GQ oo Bb ouGs cosdoe ese ocoocddy scuesaesae gb bee sec ccssscseceeesesse2% 1, 210
B—Birech. i. 2 sci be Ps ee ee i ee cee eee 1, 210
b—American. Giarch yo. = S27. tae ete ce trian oer ee 1, 210
D—Douglas Spruce (a)... 52. $2222.) esse eeee ce a ee eee 605
W—White Spruce (@) 2... 22 2262 aa. S28 atin See ce eee 605

In this plat Aspen, Birch, and Larch are designed as the nurse trees
for two shade-enduring species. It is not known whether Douglas or
White Spruce is the more shade enduring, and blanks in these kinds
may be filled with pines or hard woods in the future, or a portion of
the Birches may be left standing.

Reports.

June 30, 1897, result of count: 919 Birch, 772 Ae and 820 Larch,
or 69 per cane

October 12, 1897, result of count: 1,025 Birch, 950 Aspen, 200 Larch.
Evidently an error in count of Birch and Aspen in one or both counts.

NOTES ON NEBRASKA PLANTINGS.

Measurement of growth.—The following measurements were made
July 29, 1897, and include the total height of trees measured. The
Catalpas, Black Locusts, and Mulberries in almost all cases sprouted
from the root, and the remaining trees were, with but few exceptions,
not over 12 inches high when planted, the tallest at planting being the
Oaks. The average growth was determined by measuring every tree
of the variety as it came in the plat up to the number of 25, and taking |
the average of such measurements. |

aTo be set in hereafter.

59

Planted 1896.

Greatest | Average

Height
| height. | height.

Name. | when
| planted.
|

| Inches. | Inches. | Inches.

Biachkehacnsteen eee on-state oe eae lan Me Se. re 0=15 104 763
[etannily Ciena a Sik gee Meee een pa She a Ae Bi enti REE | 10-15 88 56
PASE LOTNISTON CUMUIN ES) a are a ate te cre ae eee eS Seen aoe Ae ate ata me foci |e ee seit sa 68 | 52
IIB EIS CHG gare dceagoednsocnouare odnte Soe SCbn AOE HEOH GO REe SOE ReeSanoe | 12-18 | 67 | 51g
BOSCO arte tn ee Soe eee hee eee Mee Cee coal fee ee oda eet Te « |} 10-15 | 66 47
SAT TET Sar Saete ctee a Ogre se (Se 61 48
TUT Lec ah a i ae Sas Ane ck eae aa La eee aes (eet OSI5 3 53 274
\AINEE Vins ae ath ce See ch eR Res teak a Sg ee 8-12 47 | 384
Greene tape eenr pret te eres sce i i Tk 8-12 | 46 | 37
ISIS RIOTS. IMPS 6 nao Sno enc Do SHSSE HR hdOF EE ESE PONS ae eo rOe Renae aaesRee 8-12 46 354
Welliony TH aasec eee aa nen ee 10-18 46 34
IWeliLerAts sets trian see ae nase eo Ae ata a AC ER eae 8-12 44 | 353
FGne ye OCHSb aa ees ner eee ee ata eer asi eas aeicle a jeaels cccatcelys 8-12 40 29
ES UT Oe ee ore ata oicta a Aspese ee cis Sa/sicis © sain cis ose neh deioe/sseec seed sein 12-24 39 304
ID TERI pew LEWC i= canon SoudcoapouosHooouuesocdoS eS eR CN ene 8-12 26 214
UDG JENNG). nsndads dao nod cobondnoe daodqanaS sO BREE BOC OUeP NE ASeegnoEsesE 8-12 24 19
SUOLCHELAI OG temanec eeee as aes tees aelea ee erini ease natcnaiSatclacion cece. cs 8-15 | 20 17
Douglas Spruce .........-- Jonson pone dqOnao GagSoo naan au ScooosESSNOsKoRC 8-10 17 134
ING oie (srl) a SOs Sa cece eRe MACHER CUne GOaC COC AONE Se aera SEs 8-10 | 14 103

Planted 1897.

Name. | Helen | Greatest | Average

| planted. | height. | height.

Inches. | Inches. | Inches.

JSG (CHUMGINES)) sec ce se cb6 coeccdsenocGonODde AqaSe Hebe ca tenocrecnond sacecseces 40 34
LTHKEN, Soa daca men OOSn Lae ShN Id» aud as Cates AREER ESOS COS ECO saa ere 10-18 | 28 214
BAC Kaolin ener enree cree le = a ote fore wile aciaeiciniae oe cie'wieJa-Ss <r ececas 8-12 | 25 19
BACs pie ree ate ae ne aes 10-18 | 24 204
SHV. OAV OS Dl Obs sere steas, Sa ena ee WN tee cle mn awe cee ac Wee ce vtec ces 10-15 23 19
pAmMericanelane Nac. cnsebie he ticmmae scene sae eg Sse cea cnln sto cis see esacea- ees 8-12 9 74

Cultiwation.—In 1896 the plats were cultivated five or six times, and
in 1897 one man devoted his entire time to the care of the 10-acre plats
and the conifer nursery and seed beds. A successful effort was made
to keep the plats clear of weeds and the soil in fine tilth throughout
the growing season.

Close or wide planting.—The plantings of 1896 were made at varying
distances to watch the effect on growth. Heretofore 4 by 4 feet has
been considered close planting in the West, a more common method
being to plant from 2 to 3 feet apart in rows 8 to 12 feet apart. It was
thought that the closer planting might result in a more thorough wind-
break, and in lessening the amount of cultivation.

In plat 1, planted 2 by 3 feet, one cultivation was given the second
year from planting, and the nurse trees were cut back at the instance
of Mr. Fernow, who found that they were crowding the permanent
trees too much when he inspected the plantation July 15.

60

The illustrations made from photographs of plats (see frontispiece
and page 51) taken at midsummer show how completely the ground
was shaded in the second year, in plantings 2 by 3 and 3 by 3 feet.

COLORADO.

The State Agricultural College of Colorado is located at Logan,
about 70 miles north of Denver, and 5 miles east of the foothills of
the Rocky Mountains. The college farm is a slightly rolling tract
of land. The field assigned for forestry experiments is almost level,
except for a slight draw which extends diagonally across it (Plate
III). The main irrigating ditch which waters a number of farms below,
borders the forestry field on one side, the field itself being irrigated by
a lateral taken from the ditch at a higher level. The soil is a clay loam,
with stiff clay subsoil. It contains so much alkali that few crops would
erow in it, though a good crop of beets was produced on a part of the
field in 1895, with very little irrigation.

THE PLANTING OF 1896.

Five acres were plowed very deep in the autumn of 1895, and thor-
oughly harrowed just before planting began, late in April, 1896. Itwas
impossible to get water on the plats for a month after planting, so that
the stand was very poor. In Augusta grasshopper raid destroyed most
of the living trees, and three of the plats were abandoned. The remain-
ing plats were reset in the spring of 1897 on a different plan, the varieties
originally planted not being available. In replanting, the living trees
were not disturbed. Only the two plats thus replanted are reported.

PLAT 1.—1 acre, 2 by 3 feet, 7,260 trees.

Original plan:

POM BB OF Vi sri ars

BH AD Me MAYS Alii Se AGB;

D 5B Ee StS eB. sek
Was. (BoA TAS CBee i
OME SHB SEE SEE ee

Ty ,, AS-D A 3 ge eAS at os paar
SB: Mie a eel shies

T Ae BAY TVW Ars aN ee
Py Mo so Ba Oe Mia ae bes

PLATE III.

Bul. 18, Siv. Forestry, U. S Dept. cf Agriculiule.

COLORADO.——-GENERAL VIEW OF PLANTATION FROM EAST SIDE.

igi «ae

&

; 61
SSE PIG DRISIE: 2 ce ce oi6 CEB See 1,815
“ssl DEGLIO GE sc 26000660 Go Sees Ces San Ise Ee =a eae Fe NS a 1, 361
| TSSLIPGE UD sodomeq epee eg Ge = ipa eee a isi ae pe ae a 1, 361
| la Vinh ITN Jo 5. coed ASE ates ae re eee een 227
= CEO LLDCS in SSSR ARS SA ee eee ee 907
_s=S iain RIG. . 0 SASSER Go ae ee ee 227
celia QIK [255.5566 Sade Ae See 227
== SINGS cond bod é tC Need COs ae eta Se ee a eee 227
pes IDI AMID 3 a3 SSeS sn See ea en 227
_ TS JODELGS SPECS. sodeche Se Ss a i ae ae ae ole a 227
=a NOGIK JNO. odo SoS acees Sees os eee ee eee ees oe errr 227
Seria PMO ccoceseédh50006 BREE es Ae ee ge eee See 227

At planting time the Birch, Chestnut, and Boxelder were in very poor
condition; all others, good. Stock from same sources as that used
elsewhere.

Reports.
June 3, 1896, result of count: 1,815 Artemisia, 1,300 Maple, 72 Box-

elder, 700 Honey Locust, 100 Rock Pine, 227 Bur Oak, 227 Elm, 227

Leia; My

Ash, 67 Birch, 0 Chestnut, 41 Black Cherry (substituted), 0 Scotch
Pine, 27 Douglas Spruce, or 62 per cent.

October 3, 1896, result of count: 500 Artemisia, 72 Boxelder, 443
Honey Locust, 4 Rock Pine, 71 Bur Oak, 96 Elm, 10 Douglas Spruce,
67 Birch, 41 Cherry. Maple and Ash not reported.

In April, 1897, the plat was replanted as near as possible after the
following plan, without disturbing the living trees:

Second planting:

3 POM IP Qt Ie

Poe EE Pe A

iPaeb Pe BP

Ae Pee PoP ik

eee Maes PY eM Pe

eee olds be aA.

| BOA) BS ml eae al o fae oe

PAC Pe Pee
P—Aspen E 3, 630
Tin Mog. ue oo eee eee eee 908
MctimereMayiGe 2.2. |. -- e w enn ee en ne t en n eee nee 907
MEOW ByenOClst. =. -- =.=. ---- ------+------------- Ee ee ee mee ee 453
Oe Bifishray TEL Sp era ee 454.
Snes gh eee eee are 454

62
Reports.

July 10, 1897, result of count: 1,903 Aspen, 265 Birch, 556 Maple,
213 Elm, 375 Ash, 294 Artemisia, 27 Oak, 297 Honey Locust, 40 Box-
elder, 28 Cherry, aud 5 Douglas Spruce; or 55 per cent of original number
planted.

Oetober 1, 1897, result of count: 278 Artemisia, 279 Elm, 469 Honey
Locust, 18 Oak, 4 Douglas Spruce, 36 Boxelder, 26 Cherry, 50 Mulberry,
1,278 Aspen, 71 Birch, 388 Maple, 296 Ash.

The original plan of this plat was designed more to test a great vari-
ety of species than to provide suitable light conditions for them, and
hence the great loss and necessary replanting with other species will
have no especial effect on the purpose in view. As the great prepon-
derance of trees reported living at the end of the growing season in
1896 were light demanding, it was determined to keep the nurse trees
of this character in this plat, and in the replanting Aspen and Birch
were made the nurse trees. As reported in July, only a little more
than one-fourth of the living trees are shade-enduring species.

PuaT 2.—1 acre, 3 by 3 feet, 4,840 trees.
Original plan:

MO M ChM HLM ChM BLM O
B MM -BoO MM. Be Es Be Me Be ieee
M ChM BLM ChM BLM ChM BL
BM BoM Bo M- BoM BoM Be
M HLM ChM O M ChM HLM Ch
Bo M BoM BM 2Bo tbe Meee ee

Ch M BLM ChM BLM ChM BL
B MB MBM SBM Bee been
M BLM ChM HLM ChM BLM Ch
BM B MB UM yBaMoB MB
M O M BLM (Choe Bin MCh MO

M—Silver Maple ...... 2.02... ccc bee ae ees ee ee
B—Jack Pine . 22.5.6). ss sect ee ee ee eee eee Sea eee 1, 210
Ch—Black-Cherry -.:.-...- =< .02/s¢Ssee sea 581
BL—Black Locust: -.. 02... 22 os .2% - coe eee 323
EE—Honey. locust -..-52. 2425228. te er se ee SS ee. 194
O—Bur'and White Oaks .2. 2.2.2 52-2. 25 9 ee 112

All stock was in good condition at planting time.

63
Reports.

June 3, 1896, result of count: 2,400 Maple, 700 Jack Pine, 581 Cherry,
323 Black Locust, 150 Honey Locust, 112 Oak.

October 3, 1896, result of count: 1,029 Maple, 66 Pine, 10 Black
Locust, 49 Honey Locust, 26 Oak. Cherry not reported.

In April, 1897, the piat was replanted, without disturbing the stand-
ing trees, as nearly as possible to the plan here given:

VIR se evi bboy VES TE
eve Pe eM Pe ME
Mee OMe Br Mio B
Pele VE Ps Mi

IB dU Eyelets NES

1a

M

JE AUS BA) Callin ediarmel |
Vi ee Vi br vie
iP

Pe Me ve
MEAUBIDIG Joc ofetobéedee aes Cheese Se atin arn aes Pees ae eee eran eee mete iw 111)
PESO 2 coc cos cb cse Chuo p do SBC Se eS COe ee UES DEN ABE EES AOD AMADEO ete Sane. 1, 210
OC ka Gish) peImen(@) ks ote s2 sss et cece os ck eee a debe se ounce 302
DS Oi IBN 5. 2 so scecs Soc adn Bes ogee gps9 008 bees peoueroeed Backed Ucs es seeen: 302
Bis OTeNy ILO OMS 3 6 a AES eee ee eee a a 303
[STL —=]BYU RG) Son oe Sroka ck SEARO S TIE e CIO Ee oe eae aa Pee 303

Reports.

July 10, 1897, result of count: 1,624 Maple, 160 Cherry, 200 Honey
Locust, 10 Black Locust, 32 Jack Pine, 620 Aspen, 82 Elm, 109 Birch; or
58 per cent of original planting.

October 1, 1897, result of count: 1,544 Maple, 160 Cherry, 216 Honey
Locust, 20 Oak, 10 Black Locust, 25 Jack Pine, 605 Aspen, 150 Elm, 69

Birch.
SOUTH DAKOTA.

The South Dakota Agricultural College, located at Brookings, in the
eastern border of the State, began experiments in forest tree planting
in 1889. When the Department made its first plantings at this station
in 1896, permission was courteously given to use any data which the
college plantations might supply, and also to underplant in the college
plats. The kindness of the college was the more readily accepted by
the writer because of his association with the institution from 1887 to
1891, during which period he planned and personally superintended
the planting experiments at the college.

aTo be planted hereafter.

64

In 1889 ten plats of one-half acre each were planted at this station.
In 1890 twelve one-half acre plats were added, and in 1891 eight plats
were planted, making a total of 15 acres. The Forestry Division
planted six plats in 1896, and seven in 1897, making a total acreage in
the grove of 214 acres. (Plate IV.)

LOCATION AND SOIL.

The plats occupy almost level ground, with a slight rise to the west
and south. Just beyond the limits of the plantation, to the west, the
land rises to a low ridge, on which the college buildings are located.
There was a small Cottonwood ‘timber claim” one-half mile south of
the plantation when the first trees were set, this being the nearest
grove of any kind. The site is in the open prairie, the nearest natural
woodland being the fringe of trees along the Sioux River,5 miles to the
westward.

The soil is the usual black loam of the prairies, very rich, the surface
soil being 18 to 30 inches deep, and separated from the stiff yellow clay
subsoil by a thin stratum of coarse gravel mixed with clay. The clay
subsoil is of unknown depth.

RAINFALL.

The mean annual rainfall from May, 1888, to December, 1894, was ~

16.06 inches, as observed at the college. The following record for the
erowing season of 1892, a year of unusually plentiful rain, and 1894, a
season of exceptional drought, fairly presents the extremes of precipi-
tation. The precipitation for the growing season of 1896 and 1897 is
also given.

s | | Sep- |;
Year. April. | May. June. | July. | August. | tarber: Total.

j | | |
| | |
| Inches. | Inches. | Inches. | Inches. | Inches. | Inches. | Inches.
| |

1802 Serj eee eee eons (ea raere 7.25 3.52 | 8.69.) * 8:03) \5 ¢ eden emoe gees
G04 i. sip ee we wares ee er 3.04 | $30) ey plage 09 73 > A 68s deve
1906 825 eee ane Pe 915,55) | 346, 33845 )eme sare 44 i ee Arr,

TROT Sete oe tee Ln ae eee 2,45 | .83 3.86 | . 4.41 | \3.59)\9 | ooerueeeeyem
| : |

THE PLANTING OF 1889.

A few plats of this planting are given as illustrating the action of
well-known species of trees when planted in mixture.

The season of 1889 was very favorable for trees, and a good stand
was secured in all the plats. Subsequent years of severe drought have
served to test the adaptability of the several species to the locality, and
hence this planting is treated in considerable detail.

In plats 1, 2, 6, 7, and 9 several species of Russian Poplar were set
and made a vigorous growth the first season, but in the drought years
that followed they were almost entirely killed, none of them equaling
the common Cottonwood as a drought-resisting plant. In plat 4 White

Bul. 18, Div. Forestry, U. S. Dept. of Agriculture.

*

TS

sae.

bd

FIG. 1.—SCOTCH PINE IN SOUTH DAKOTA PLANTATION.

FiG. 2.—SOUTH DAKOTA PLANTATION.

—=—”.

i

Patt pe crit
Some eG r _
eat >

ie ee ae

65

Pine was planted 12 by 12 feet apart, with Boxelder for nurse trees,
but all were dead by the end of the second year. Larger specimens,
planted in the college lawn, lived through several years, making a
feeble growth, but all succumbed in the drought of 1894. European
Larch and Boxelder were set in one plat, and the Larch made a good
stand, but a freeze in May, 1890, when the Larch leaves were half
grown, kilied a large number of the trees. It required several years
for the Larch remaining to form leading shoots, and the best trees in
the plantation are now scarcely as high as the Boxelder among
which they grow. The species was highly recommended for planting
throughout the West a number of years ago, but this experiment does
not demonstrate in it any value for this latitude.

The following discussion of plats in this planting is given as illus-
trating the action of the several species in mixture:

PLAT 1.—One-half acre, 4 by 4 feet, 1,361 trees.

Beas abe: Bas
1 Wd) Bak aS
DeaOrsb. S- B.C
Rebar SPB
Bese bo) © Bas
Peebok 2B PB
1554 Or") Bes bien ©
Ear bb PB

B—Boxelder.

P— Populus certinensis (Russian Poplar).

S—White Spruce (Scotch Pine substituted in one-third of plat).
C—Cottonwood.

The Russian Poplar soon failed largely, and it was replaced the
second and third year after planting with Green Ash. The White
Spruce were wild seedlings dug in the Black Hills and grown one year
in nursery rows, at the college. The Spruce was set at the same time
the other trees were, and the weather being favorable a good stand was
secured. The first few years the growth was extremely small, but the
trees are now (1897) well established and are making vigorous growth
in the shade of the Boxelders, which average two to three times their
height. In most cases the Boxelder crowns meet over the Spruce,
but as yet the latter show no injury from the shading.

The Scotch Pines in this plat are fully equal to those in plat 8, noted
below, and the Boxelder and Silver Maple seem to have about the
same effect as nurse trees. The Cottonwoods have thinned out consid-

20191—No. 18 D

66

erably, but those remaining are in good condition and are from 2 to
3 feet taller than the remaining species in the plat.

The Boxelder has proven its excellence as a nurse for this latitude.
During the favorable seasons of 1889-1893 it grew rapidly, shading the
ground so well that cultivation was unnecessary after the third year
from planting. The years 1894 and 1895 were both extremely dry, and
the Boxelder showed great injury. In the spring of 1896 the growth of
the two previous years was dead, but dormant buds sprouted in the
older limbs, and scarcely a tree was entirely killed. The trees averaged
9 feet high at this time, and the drought that checked their growth so
severely had much less effect on the more valuable species, so that it
served merely to head in the nurse trees. The growth of 1896 was vig-
orous, thickening the tree crowns and increasing their value as nurses
by shading the ground more completely. The dead twigs in the Box-
elder tops give the plantation a bad appearance, but the tenacity of
life in the species has been well proven, and its usefulness as a nurse
tree in high prairie demonstrated.

It may be objected that the wood of the tree is valueless, but if by
using it good results in starting conifers and valuable hardwoods can be
secured, other considerations may well be ignored.

PLAT 5.—One-half acre, 4 by 4 feet, 1,361 trees.

Boob Beeb bags
153g MOP PEE IB ess (0)
DBS aee Bi By ye.d Bio) Bong IBS
Bahn ba Ore Baek
boy) oye) oyna Beales? 18}
153, KOs Idee 1B O)
Br Bs Bebo bee
Bh BOs aah

B—Boxelder.
O—Bur Oak.
E—White Elm.

In this plat the Boxelder has so completely covered the ground that
the leaves of the trees have been prevented from blowing away and
already show the formation of humus. Particular interest attaches to
this plat by reason of the effect of the nurse trees on the Bur Oak.
The natural habit of this tree, when grown in the open, is to branch
freely, giving to even the young specimens something of the spreading
crown of old trees. In this plat the Oaks are forced straight and tall
in proportion to their diameter of trunk. In some cases they now

67

approach the nurse trees in height, and without exception the leading
branch is well in advance of the laterals, and the trees are making a
vigorous growth. lven the few that are entirely shaded (overhead) by
the Boxelders are in good condition. The Elms average somewhat
taller than the Boxelders in this plat. They show the formative effect
of the nurse trees in their straight trunks and high -ranching.

PLAT 8.—One-half acre, 4 by 4 feet, 1,361 trees.

Mea eewt SC > eMC. Me: ©

ee vie C7 Mee Be Mo C= Mi
ie Csi Cea Ne
Civitas Mee va Be Mi
Veco Vie Mec. MC
Dei Cee Me VE CoM
ME Cr Ma Co Mr C= “Mi C
CAB MCP aM
Vee Cee ME CMe My

Ree Vie Cre Ni< Sh eMe «©

M—Silver Maple.
C—Cottonwood.
P—Scotch Pine.
B—White Birch.

This plat contains a good stand of Scotch Pine and White Birch, the
nurse trees being Silver Maple and Cottonwood. The great majority of
the Cottonwoods failed during the drought years of 1894 and 1895, but
those which remain are the tallest trees in the plantation. The Birches
are second to the Cottonwoods in height, and are the handsomest trees
in the entire plantation. They were purchased for Yellow Birch, but
proved to be European White Birch. The tree is a native of cool,
moist climates, and its vigorous growth thus far is an illustration of
the ability of species to succeed under widely varying conditions. The
Maples froze back to the ground the first winter, and have since grown
with several trunks, which has increased their shade but has not
improved their appearance. They have withstood the drought years
better than Boxelder, but they have been injured somewhat by sun-
scald. They do not equal Boxelder as a nurse tree.

The Scotch Pines were bought as seedlings 10 to 12 inches high, and
were first planted in nursery rows and heavily mulched. The second
spring favorable weather was chosen for setting them in the plat with
the other trees. The Pines are unequal in growth, some being almost

68

as tall as any of the Maples, and the average being about 4 feet less.
They are now from 6 to 15 feet high and making vigorous growth.
They made much less erowth during the drought years, but show no
other effect of drought and are in perfect condition. The platis too open

for best results. Green Ash was planted in where the Cottonwoods |

failed, and in this mixture made very satisfactory growth.

This plat is in the south border of the plantation, and the effects of
the wind are especially noticeable on the pines on that side (see Plate
IV) which are not only much bent, but are also much shorter than
those in the center of the plat, where there is protection.

PLAT 10.—One-half acre, 4 by 4 feet, 1,361 trees.

CO .2A4, EBS 10 eeAGean
GA eB One ones
Acs BS BagG Ae Oia oe
Ey BiG 2 Ae Eanes
Oe Nes 18 o(Oh ae JB
BOON oS ene ue
Aco GEBESGe As Hepa
i BpOe Aon. BerGe ws

B—Birch.
C—Black Cherry.
A—White Ash.
E—White Eln.

This plat was designed without nurse trees, but the four species were
arranged in rows so that the light-demanding Ash and Birch would
come between the more shade-enduring Elm and Cherry. All four
species are really light demanding, but relatively the Cherry and al
endure much more shade during youth than the others.

It is generally believed that Boxelder is a more rapid grower than
any of the species named, and for the first three years this was true,
but after nine years’ growth Cherry, Elm, and Birch are larger than
Boxelder growing in a plat beside this, and the Ash will average as
tall, though not so large otherwise.

This is the best plat in the plantation. The crowns are so dense
that weed growth is impossible, and it is difficult to force one’s way
among the trees, which are all in fine condition. The Birch is about
2 feet taller than the Elm and Cherry, which are of equal height, the
Ash averaging about 2 feet less.

The Cherry has hardly yet begun to form a leader. The first three
years this species grew in bush form, dividing near the ground into

~ 3 Ath Or eee

several branches.

69

As the neighboring trees crowded it the Cherry

assumed amore upright habit and a tendency toward one main branch
taking the lead, and a trunk is beginning to appear.
more tree-like, but holds its lateral branches aimost to the ground.
The Elm parts with its lower branches more readily, and the Ash,
having light only at the top by reason of its slower growth, forms few

laterals.

The Bireh is

Following is a table showing the number of living trees in these
plats, one-half acre each, together with diameter and height growth, the
count being made in August, 1897:

RGSSianeOplaneeeseeeeee eee ee
Cottonwood. = ee eens ae
BlacksHillsiSpruces=.----)-552 ==
Scotchpeines=saacce ena csoen aie

Silver:Maplesece.- a -osseeaee ee
Cottonwood 2-2 --.se-ee0cseeeeee
Wihite Birchssas-ss-ess.seecces
Scotchveine)- sos ee acece oe ecnes
Greenra's hist taecn : oscren sees

Black Cherry

Whi besbirehe ss. csse eset e secs
GreeneA sh? nsec Aae es aoe eek
WW ad OF pe Re ere ge

| Average

Circumference 1 foot from the ground.

Living | | Greatest | height i im Srenten poate
trees. height. | Hee a ference: | ference.
Mt 17 | Ft.in. | Inches. | Inches.
Ll ae een 440 14 0 Lm ede] 1031 8
Di eee 215 16 6 196 103) 63
Tah aR eae es 56 20 0 Lye eS 16 113
WEEN oto sora 40 250) |) 21) fede 21 182
cE ee erg 47 4 4 5 44 34
ie eat Si a Ne 17 13 0 9 10 12 | 74
Sscacqoasessadosd] 815, or 60 per cent of original planting.
Sheecoee CEO aeES $49 |" 166 | 12. 6 10 | 7h
Bera ook ot a, LTE eg een OU Ta 6 4h
pert i.s.. 165| 16 0 10 7| 93 62
SE eee S = eae cc 113 ay 4 6 24 12
SSaCOdaOONSSOUBOE 1, 168, or 85 per cent of original planting.
= — = zal —
Re Mele 164 16 6 | 130 1i | 6%
Be Ea oes aces: 113 22 6 | 18 5) 19 | 154
VY At eho ee 99| 19 0 14 0| 134) 134
er Is TG ae 69| 15 6 9 6) 143) re
Ren AS te eOe 100; 12 0| 9 6 | 64 42

THE PLANTING OF 1890.

9
17 4
0 |
10]

:

-993, or 73 per cent of original planting.

The plats set in 1890 were planted pure—that is, each plat was com-

posed of a single species.

In the case of Boxelder and Green Ash

plats on opposite sides of the drive were planted, the one with seed
sown in hills and the other with 1-year-old seedlings, to determine the

relative value of the two methods.

The use of seedlings was demon-

70

strated to be in every way superior. The Boxelder seed germinated
poorly, making an uneven stand, and while in the seed leaf both Box-
elder and Ash were much injured by cutworms, which did practically
no harm to the opposite plats, where young trees were used.

The seed plants required hand weeding, making cultivation the first
year more difficult and expensive, and in the spring of the second year
the seed plats had to be thinued to a single tree in the hill, again
increasing the cost. A count made at the end of the first growing
season (see Bulletin 20, S. Dak. Experiment Station) showed that the
seed plat of Boxelder was a failure, while in the seedling plat 83 per
cent grew. Of the Green Ash 89 per cent of the seedlings lived, while
only 49 per cent of the seed grew.

The following varieties were planted pure: Boxelder, Green Ash,
Silver Maple, White Elm, Russian Poplar (Populus certinensis). As
compared with mixed planting, the disadvantages of pure planting are
very apparent in this plantation. The mixed plats in which shade-
enduring trees were used as nurses are now so thick as to completely
shade the ground, and no cultivation has been necessary in them for
four years. The more valuable trees in them, such as Ash and Elm,
are in better condition than when planted pure, having been benefited
by the side shade of their more densely foliaged neighbors. In the
pure-planted Boxelder plats, while the trees have grown quite as well
as in mixed planting, they are of themselves of low intrinsic value, and
hence when the Boxelders are gone nothing will remain. Used as a
nurse, the Boxelder reaches small fuel size, and when it is removed
there remains a grove made the more valuable by having used it.

Silver Maple shows the same characteristics, planted pure, except
that at Brookings the young trees winterkill and sprout from the
crown, thus growing in coppice form. As before stated, the Russian
poplar failed during the years of drought.

In the Ash and Elm plats cultivation is still necessary seven years
after planting. This fact alone makes the pure planting of these spe-
cies inadvisable. The trees have not made as tall growth, and are
much more forked than the same species in mixed planting. Trees
planted in the plains are much more apt to head low than in forest
regions because of the intense sunshine and the heavy winds. There
is a constant use in western farms for pole timber, and its value is
greatly increased by straightness and freedom from knots. If the
young trees can be grown free of low branches their timber will be
much stronger and more useful for all farm purposes. Hence the great
importance of planting varieties the wood of which is useful in farm
economy among others which wil) encourage length of stem and free-
dom from branching. Quick maturing kinds like Cottonwood and
Boxelder may be planted alone where the object is merely to secure a
supply of cheap fuel, but even in this case the method is not economi-
cal, since it could be accomplished with more durable species in mixture.

(

_In aplat of Shellbark Hickory mixed with Silver Maple the Hickory
(one year old, grown in nursery rows at the college) were all winter-
killed the first year, and their places were filled in with Green Ash.

In 1891 44 acres in various mixture were added to the plantation, but
as no new species were included extended notice need not be made of
them.

PLANTINGS OF 1896.
Underplanting.

In addition to the 3 acres of new plats made by this division in
1896, plats 18 to 31 (set in 1890 and 1891) were underplanted with
conifers. These plats had been replanted the year previously by Pro-
fessor Corbett with Black Cherry and two-year-old Scotch Pine seed-
lings. Many blanks yet remained, and although the shade in the plats
was too thick to anticipate great success from underplanting, it was
believed that even if a slight admixture of conifers resulted, an oppor-
tunity would be afforded of watching the development of the conifers,
and the value of the plats would be increased.

Since the blanks were irregular it was impossible to plant to a definite
plan, but,in general, when a blank occurred in the midst of densely
foliaged trees, as where the new tree would be surrounded by Boxelders
10 to 15 feet high, Douglas Spruce, White Spruce, or Jack Pine, was
set; where there was more light Scotch Pine or Rock (Bull) Pine
was set.

The Douglas Spruce and Rock Pine used were wild seedlings dug in
the mountains of Pueblo County, Colo. The Jack Pines were wiid
seedlings from Carleton, Minn. The Scotch Pines were transplanted
nursery-grown trees, 12 to 15 inches, and the remaining trees were
nursery-grown seedlings. The roots of the trees were puddled when
received, and heeled in in the shade of other trees. In planting, the
trees were carried in pails with the roots in the water; they were
planted the same depth they stood before, and were well firmed.

Unfortunately, no record was kept of the number of conifers set in
each plat. In October, 1896, after the growing season was over, a
count of trees showed 560 conifers in plats 18 to 26a, and 640 in plats
26b to 31. In June, 1897, a count by plats and varieties was made,
resulting as follows, each plat containing one-half acre of ground:

Plat 18, 3 Jack Pine and 2 Scotch Pine, 5; plat 19, 22 Jack Pine, 25 White Spruce,
4 Rock Pine, and 22 Scotch Pine, 73; plat 20, 2 Jack Pine, 2 Scotch Pine, and 1
White Spruce, 5: plat 21, 1 Jack Pine, 18 Scotch Pine, and 15 White Spruce, 34;
plat 22,39 Jack Pine, 29 Scotch Pine, 16 Rock Pine, and 9 White Spruce, 93; plat 23,
16 Jack Pine, 14 Scotch Pine, 5 Rock Pine, and 12 White Spruce, 47; plat 24, 19 Jack
Pine, 41 Scotch Pine, 16 Rock Pine, and 33 White Spruce, 109; plat 25, 25 Jack Pine,
29 Scotch Pine, 9 Rock Pine, and 19 White Spruce, 82; plat 26a (one-fourth acre), 11
_ Jack Pine, 9 Scotch Pine, 5 Rock Pine, and 11 White Spruce, 36. Totals in plats 18

to 26a (44 acres), 1388 Jack Pine; 166 Scotch Pine; 55 Rock Pine; 125 White Spruce;
grand total, June, 1897, 484.

(2

Plat 22b (one-fourth acre), 15 Jack Pine, 20 Scotch Pine, and 23 White Spruce, 58; -

plat 27, 50 Jack Pine, 51 Scotch Pine, 4 Rock Pine, 36 White Spruce, and 13 Douglas
Spruce, 154; plat 28, 40 Jack Pine, 28 Scotch Pine, 1 Rock Pine, 40 White Spruce,
and 12 Douglas Spruce, 121; plat 29, 62 Jack Pine, 65 Scotch Pine, 2 Rock Pine, 95
White Spruce, and 53 Douglas Spruce, 277; plat 30, 1 Rock Pine and 8 Douglas
Spruce, 9. Totals in plats 26) to 30 (24 acres), 167 Jack Pine; 164 Scotch Pine; 8
Rock Pine; 194 White Spruce; 86 Douglas Spruce; grand total, June, 1897, 619.

To these figures must be added 99 Scotch Pines underplanted previ-
ous to 1896, making a total of 1,201 conifers on 63 acres, or an average
of 185 per acre. Or, leaving out plats 18, 20, and 30, which together
have but 19 conifers, there having been very few blanks in these plats
when the conifers were set, the 5 acres remaining average 236 conifer
trees per acre, a number sufficient to make quite a change in character
- from the original hard-wood planting. A note accompanies the report
to the effect that the trees are growing nicely, some of the pines having
made a growth of 1 foot thus far this season (June 15, 1897).

No report of this underplanting was made in the fall of 1897, but a
hasty examination made by the writer after a snowstorm in early
December showed that the small conifers gave every promise of success.

PLAT PLANTING.

Two series of plats of one-sixteenth acre were designed to illustrate
the effects of close and wide spacing, and the trees were set at distances
as follows: 1 by 1 foot, 1 by 2 feet, 2 by 2 feet, 2 by 3 feet, 2 by 4 feet,
3 by 3 feet, 3 by 4 feet, 3 by 5 feet, 3 by 6 feet, 4 by 4 feet, 4 by 5 feet,
4 by 6 feet, 5 by 5 feet, 5 by 6 feet, 6 by 6 feet. One series was
arranged as a wind mantle, to be placed in the border of the planta-
tion, but through an unfortunate misunderstanding its location was
changed, and hence the purpose of the design is defeated. In this
series conifers are arranged in continuous rows, and the spaces are
filled in with Artemisia, as indicated in the accompanying diagram.

Wind mantle plat, 3 by 3 feet.

DaaDaaPaaBaaPaaBaa D 2a 2 2 S02 ae
DaaDaaPaaBaaPaa BaaDdDaas 245 2323
DaaDaaPaabBaaPaaB aa Daa 2.4.9 23 beeee
DaaDaaPaaBaahP aca BaaDaas 22 oa a0
DaaDaaPaaBbBaaPaaBbBaa Daas aan 42)
DaaDaaPaaBaaPaa Baa Daas 2.453 200
DaaDaaPaaBaaP aa Baa Daa 8 2 aorta
DaaDaaPaaBaaPaaBaaDaasSsaansaa) ae

a—Artemisia.

D—Douglas Spruce or Red Cedar.
P—Rock Pine.

B—Jack Pine.

S—Scotch Pine.

73

Such an arrangement provides for a wind-break 90 feet wide around
the outside of the plantation, in which the conifers shall form solid
rows, separated the first few years by nurse trees, whicl: should not be
permitted to remain long enough to weaken the lower branches of the
conifers. Had such a wind-break been piaced originally to the south of
the Brookings plantation, the damage apparent there could not have
occurred.

In the second series of one-sixteenth acre plats, Boxelder was used
as a nurse tree, and various hard woods and conifers were intermixed.
A few of the plans, with result of count made in the first week in J aly,
are given herewith.

One-sixteenth acre, 1 by 1 foot, 2,722 trees.

Ofeberss bo YY BS BL

Ie =) eS 8% A Bye A ,

Sree oe bo St Bb SBS

BeebneeAe Se VRP An POC

tae eb OC” BS BO

Aes io: A PB Pz

Seber ber Sab | Sue: oS

Bere A. POR PA PB

Om Bam bo Boas < Be lh

Aan be AP Bo PO A
BOOM CRBS emg aa mem Se Sh ies Sas Seco ee eee cote eee sees 1, 021
(Ne AEGETIN Sian ee ery ett ere eee Se eee oc et Jobe wotseed ececcdeccees 340
Sai nO RS TNIGU C Ores se aera A tee el ok es Sees ec s co beeeuaas 510
}PSSVOOMOAG LETT is RS ei Ee i a 680
Oe sae QIK 2c os eS SEES SSS Se ea OR 42
[DSS OG LETTER Set ee 43
Be ellos nie eee et gees es Lee bo cede Shoe ee aede Jace 43
CDSE ool (QUIET: Soo iis siete aire ee pe eg 43

In this plat it was the purpose to secure a close stand of conifers and
to avoid all cultivation. The Boxelder was designed to shade the soil,
and thus prevent weed growth until the conifers were well rooted,
when it was to be cut out. It was found necessary to hoe the plat
twice, despite the close planting. The count resulted: 864 Boxelder,
375 Artemisia, 139 White Spruce, 16 Scotch Pine, 10 Cherry, and 14
Oak, or 52 per cent of a perfect stand. It will be noted that the count
reveals more Artemisias than the plat calls for; doubtless through an
error in planting.

74
One-siateenth acre, 1 by 2 feet, 1,361 trees.

Rigs 65) Grd Dn iB 5-2 oe) ede 3:

By Ba -B (Barb esBa

DBs (2? eb Daas

B. Ba B) Ba Bre Ba

P BD -Beeas

Bo Ba Boba bees

DOB: 6 3Be2 pee.

B. Ba Bo Ba Ba Ba

Cre Bs DEB SB
B—Boxelder 2.2.6 2002s aos Bae ca ae ee ee 681
Ba—Jack Pine 2.2522 co eee ak ba as ee Sa ae Se ee 340
C—W hite Spruce <---> 2 aesce om tapsd, Sage Sai qajnis OS <a ece eee a nee 85
D—Dougilas Spruce. 2.2.2. ogee sc tenes ee ee occa ee eee SS 2 ae 85
P—Scotch. Pine... = fet 2 ss 8 sos sein ee ae a ee re ee eee 170

As in the last plat, the purpose was to secure a close stand of coni-
fers, using Boxelder as a protection only until they could become
established. The count resulted: 657 Boxelder, 137 Jack Pine, 94
White Spruce, 24 Douglas Spruce, 50 Scotch Pine, or 70 per cent.

One-sixteenth acre, 2 by 2 feet, 681 trees.

1 BS al Bi ed aged BS Bs

bE Be Pec Bb

iB. BBB: -B

iP? Bee Ee

BBs Beebe

ND paies Bes oar BY re by

By Bebe bee

] Ete Bata One | Bee od es
IB—Boxelder 225 .see 2. s ere fn einen ne boo a ee ee ae ee SEL
P—Roek Pime.-2~ 222 22. 0a 02. 2b 2 Bo- oes oe eee Ce ee ee ee 7d
b—Sweet Birch: : 2.5 .2..500 20 nc8 HE AES eee ee 48

ane

15

Result of count: 507 Boxelder, 41 Cherry, 12 Rock Pine, and 0 Birch,
or 82 per cent. It was found that the cultivation necessary in the first
year after setting in such close plantings is quite as expensive as when
the trees are set 3 by 3 feet, since hand labor is necessary, whereas in the
wider spacing all the work can be done by horse cultivator. The extra
expense of setting and the value of the material fully offset the advan-
tage gained by saving in cultivation after the first year, so that such
close planting would not seem advisable.

The total of trees standing in the one-sixteenth-acre plats, as reported
June 30, 1897 (the blanks in these plats having been sown with the
seed of Oaks, Walnuts, and Hickories), is as follows: 2,738 Artemisia,
2,620 Boxelder, 231 Black Cherry, 138 Bur Gak, 15 Black Walnut, 143
Douglas Spruce, 428 Jack Pine, 67 Rock Pine, 388 White Spruce, and
210 Scotch Pine; total 6,978, or at the rate of 5,582 trees per acre.

On October 1, 1897, the one-sixteenth-acre plats contained a total of
2,347 Artemisia, 2,607 Boxelders, 235 Black Cherry, 150 Oak and Wal-
nut, 307 Douglas Spruce, 241 White Spruce, 42 Austrian Pine, 342
Jack Pine, 156 Scotch Pine, 154 Rock Pine, 4 Birch, or 6,585 trees.

Two one-half-acre plats were set at this station in 1896, in neither of
which a good stand was secured, owing to hot south winds during and
immediately following the planting season.

PLAT 33.—One-half acre, 4 by 4 feet, 1,361 trees.

Gear Ac yy ACP.

BaeAe BAS oR OA

ease A Py A ES

ver Ac ts A. Be <A

Pe eA ss: A PR

eee ie A Bo} A:

(Nee see Act wAL AS

Bae AG Be Ae BB. TA
Jel SORBET Ln oe Se ee ee a i 681
"Ba ines Terai. eee Se ek eee ee ee ee ee ee ee 340
Davee TE ee a eg ere 170
SSacuaih TEfim@ sic. Jo Se ee en eee 170

(Bur Oak was substituted for one-half the Rock Pines.)

This plat is designed to illustrate the relative light requirement of
the three Pines, the Boxelder to stand only until the Pines are estab-
lished. The very unfavorable weather at planting time and immedi.
ately following resulted in a very poor stand.

16
Reports.

Result of count October 21, 1896: 223 Boxelder, 243 Jack Pine,
40 Scotch Pine, 35 Rock Pine, and 38 Bur Oak.

In thespring of 1897 the blank places in the plat were set with Scotch
and Austrian Pine. A count made June 30, 1897, resulted: 227 Scotch
Pine, 343 Austrian and Jack Pines (the workman could not distinguish
between the young plants of these species), and 222 Boxelder. No Oak
nor Rock Pine reported.

PLAT 34.—One-half acre, 3 by 3, 1,361 trees.

Or Ws WS FOF NY:

Deel ee Op. Idee NE | ID

W- B-.W -B-W BB

1 nee Deemed Dec Oi te da

AW: = ohia Wie Oe ei

EK . Beh Es Be ok

WW Baws By W.eB

[Di De Ne lie 1D) = ah

OF Wo EE awe Ow
White Mims: 2c. sfes oS eee eee Ee ee 767
WW hrte Spruce: 2 ee. see See ee eee ere oe SSeeet eee aaa eee eee 340
B==J tek Pine 20.6 ee ao ae ee eee ere ee ee oie ato ee 170
O—Bur Oak: so. 350225 2 a ae Se 84

In planting a few Scotch Pine, Black Cherry, and Douglas Spruce
were substituted for E]m and Jack Pine. In this plat White Elm and
Jack Pine are designed as nurse trees for White Spruce and Oak.
The mixture will require a longer period of cultivation than if a quick-
growing tree like Boxelder had been used, but in the end it may prove
an advisable mixture, since the Elms are more tenacious of life than
the Boxelders.

Reports.

Result of count October 15, 1896: 343 Elm, 197 Jack Pine, 219 White
Spruce, 79 Bur Oak, 61 Scotch Pine, 36 Black Cherry, and 12 Douglas
Spruce, or 70 per cent of the number planted.

In the first week of May, 1897, all the blanks in this plat were set
with Elm, Scotch Pine, and Austrian Pine. On June 30, 1897, a count
resulted: 521 Elm, 241 Scotch Pine, 115 Austrian Pine, 77 White Spruce,
and 42 Oak (Jack Pine and Cherry not reported).

Ct
THE PLANTING OF 1897.

Following the general plan pursued in Nebraska and Kansas, the
plats set in 1897 were designed with light-demanding species as nurse
trees for conifers. Eight one-half acre plats were planted with Arte-
misia, Aspen, and Birch, both pure and in mixture, and in all blanks
were left at regular intervals for the conifers, which will be set in
1898 or 1899, according to the growth of the nurse trees. As these
designs are similar to those already given, they do not appear here.
Along the north side of the plantation three one-half acre plats were
designed as a protection for the remainder of the plantation, and the
designs follow: |

PLAT 58.—One-half acre, 3 by 3 feet, 2,420 trees.

[Rows run east and west. ]

AG Nee AG HAN Ac A Aco vA

eee deohy oer oR, Po R

Ae Nees NS Ae CASE A AN A

Rene eels Re be OR.

aN NAC A A A A

ae PR. Cee eR

Name NGA AL Al Ay. (AY. A.

Recor de ky, ob oh =

Neer Ne Ne! wAe WA Ay A A

Reehirieethes be Ry eee oR

who A MeN oA OA A UA A

Relishes: oR he Re LL

Nee Nee Ae AN OA A A 7)

Peo or Rh P SF . Throughout to

A A AA A ‘ south side of plat.

Seabee han Os al a L )
Jats Je TN AGSTDTEY ES hp Se sic ale eee 1, 210
Ee Meena e Lhe iS. oa cole hte San caes ee tessa sedseds ce sece., 303
ane cm Cetetre es eos eo ee eee a oc ee Sed Jee 302
CO Ci ee ee a i. ee ee Ss Sees eed otee oe 369

Ses Ot Hele, TRETIE. e cts SR a a eee a 236

78

Report of count, June 30, 1897: 849 Artemisia, 108 Aspen, 199 Red
Cedar, 203 Larch, 79 Scotch Pine, and 88 Elm (substituted), or 63 per
cent of planting.

The count of October 1, 1897, resulted: 80 Artemisia, 139 Scotch
Pine, 55 Aspen, 95 Red Cedar, 139 Larch, 44 Elm, and 66 miscellaneous
substitutes, or 65 per cent of the number planted. ~

In this plat and those which follow the permanent trees (the conifers)
are arranged to form rows running east and west. On the north or
windward side Red Cedar forms the border, alternating with Aspen or
Larch; 40 feet from the margin of the plantation Pines are set in
place of part of the Larch and Cedar. The Cedars are very tough and
are especially useful as windbreaks. The Larch may be cut out when
large enough for posts, leaving the Cedar and Pine as the permanent
species.

In plat 59 Austrian Pine will be used in place of Scotch Pine, and
in plat 60 Rock Pine will be used. In plats 44 and 61 the same method
of planting is followed, except that the rows run north and south, these
plats being on the east side of the plantation. The count of all the
plats planted in the spring of 1897, made June 30, gave an average
stand of 71 per cent. The stand would have been much better, but
the Birch and Cottonwood had started growth before planting was
completed.

UTAH.

The first plantings were made at the Utah State Agricultural Col-
lege, at Logan, in the spring of 1897. The college farm is located on a
high bench overlooking a broad valley, and extends to the high and
steep foothills of the mountains. The land set aside for forestry experi-
ments is almost level, and lies opposite the mouth of the Logan River
Canyon and one-half mile from it (Plate V). The soil is a stiff clay
loam, very productive under irrigation, and underlaid with a gravel
subsoil, the gravel being of great depth and slightly intermixed with
clay. The plats at Logan are of 1 acre each, but for this first plant-
ing they have each been divided into two equal parts to permit of
experimenting in planting at different distances apart. Hereafter the
plats will be planted at uniform distances 3 by 3 or 4 by 4 feet. In
this planting both light-demanding and shade-enduring species have
been used as nurse trees, and an opportunity is thus given of studying
these methods of mixture in plats of the same age.

The hard woods used were all of one-year-old seedlings, except Birch,
which was two to three years. None of this stock was in first-class
condition, all having been more or less injured in transit. The conif-
erous stock was planted in nursery beds, from which it will be set in
the plats, as designed, when well rooted.

PLATE V.

'cuiture,

Bul. 18, Div Forestry, U. S. Dept. of Agr

UTAH PLANTATION. '

ee a ae ee eS as Se ee lc ee ee ee ee

-* —_——— ‘ 2

——— eS ee a

19

PLAT 1.—One-half acre, 2 by 2 feet, 5,445 trees.

pees PP. BP B

aes ae eer Ps: PR. sP

eee Deo. BP Te PtP

eee ee AP yo P PoP

Pees tp “Bet PB

Peele = Po PS PPP

Pete hee! by P- C., Po <P

ge ee Pe Pe Po Pes P

Bae lowb ree te oP Be PB
PANS OCD «Cee bod oO OGEt SAO SCS SES EIS CONE a an ne aaa eee 1, 424
ID —SBIIREIN Abe sek CSN ES SUS Se Sete nt eee Sea cane Eee 681
IW NGD IBMT se Ab BBS SCE See eRe ect ea eae a ee a 85
P= (GOGT AGIs Sat GA eee a ed oa Pee Se ee 85
L-=lsi@Gyy LOCO sScoto.ce 6 SR aBE ese BeOS ea ea ee ieee ee a eae eae 85
O—CHNIENTR closconbine Sa BASS See SM He ae Rus eer ee 85

Report.

June 30, 1897. This being but a fraction of half an acre, the full
quantities noted were not planted. Result of count: 2,129 Aspen, 283
Birch, 49 Elm, 50 Ash, 50 Honey Locust, and 47 Catalpa.

October 1, 1897. Result of count: 1,987 Aspen, 238 Birch, 49 Elm,
45 Ash, 50 Honey Locust, 47 Catalpa.

PLAT 3.—One-half acre, 2 by 3 feet, 3,630 trees.
er Neh eb ed Ace OEP A.

Vem ME Ri MC

leugt/ 5 Seema og Per.

Mio Mee Ce ON eS

Fee Al | Beiee a

Mes Cie Mita Pitas 5

eA Pe eA Be A:

Ce AS)" WUE Os Sed Bs)
DESa/ASTT GM, - soc bbs cd So BOD OS A ee eee ee ee ee eae re eee meat’, Ui |
MWie-lRingsiant Minh Series So Sse Rees Se eee te Be ee eee a eee eee 908
Jom APRGIDIST 2. ook coat ee ee een tear ©) 1
CaCO) 255.2 aes SR Oo ene ee eee era eee 454
$= Denes SMe) s5 5 Bs eae Fae eee es Fe eee ene eee es ee 227
Pi—Scotch Pine (Q). ---= --- 0 nnn eee ee ee eee eee tence cree eee 227

aTo be planted hereafter.

80

This plat is designed with Spruce and Pine as the permanent trees,
the nurses being a mixture of light-needing (Aspen and Artemisia) and
shade-enduring kinds (Russian Mulberry). The Mulberry, aided by
‘the Catalpa, will change the conditions of light very materially from
what they would be with only the Aspen and Artemisia as nurses.

Result of count, June 30, 1897: 576 Aspen, 548 Mulberry, 532 Arte-
misia, 163 Catalpa, and 105 Douglas Spruce.

The count of October 1, 1897, resulted: 553 Aspen, 550 Mulberry,
540 Artemisia, 159 Catalpa, 72 Douglas Spruce, or 55 per cent of the
number planted.

PLAT 2.—One-half acre, 2 by 4 feet, 2,722 trees.
BW. B82 Baca ba
ee Weer eu yas 1 Pl
Po Bt Ose Sect eee es

a a a a2 a @ a a

Po Baa ar Ps Bi Ven eb
Bi Bl a VA i ee Aaech

BOW Bs isan

a—Artemisia ..-- 5555 oe aes oe aio ae ates ne Oe 1, 361
B—Bireh 2. 22. See ee 681
P—Aspen =. 22-22-62. 2522 oes ee eee ne 340
C—White Fir (@) 2 3..2522522. 22 ae oe ee ee 85
W—White Spruce (@) 2 222.2252 42222 ee ee ae ee 85
D—Douglas Spruce (@) << -. 2.5525 Ss ee ee ee ee eee 85
S—Scotch Pine (@) 2-222. 222 so So ee ae = a ee ee 85

In this plat Artemisia is designed merely to fill in for a few years,
and when it is cut out the trees will stand 4 by 4 feet apart, with Birch
and Aspen as nurses. The conifers are all shade enduring except the
Pines, and once established the mixture should be successful.

The count of June 30 resulted: 1,102 Artemisia, 318 Birch, and 374
Aspen (part substituted for Birch).

Count of October 1, 1897: 1,104 Artemisia, 270 Birch, 331 Aspen, or
71 per cent.

a To be planted hereafter,

Sl

PLAT 4.—One-half acre, 3 by 4 feet, 1,815 trees.

PAG Acr acs Ae’: i) Avs A) A

Bype Acer eas Os As Dir AY EB

Nee Ope AC PDs SA EL Aa Re A

nese tee Ae Dr AK An R

eee Ace re CAC Ro Av) ©. A:

eee Dee Ae? Be Aes Roe Alo

ACE Aet Ita As ©.s), A) DA

Dee AV a Ate Ree AO Ae 6D

TR INCE SND) eN A

Bee A AND A i
Ao=o\RIITISNG) sho soo becco ag Gb Ot OO OOO RO ES a ee ea I es 907
li Gi@Gin INE cose soccogeede Suse bene Sour Sa a at ee era eee ae meres 113
JB SAW anti@ IS he SOR ee Se Bas Bes Sere ee 113
C—Hardy Catalpa..-..--- Sle, Soh Oc GO Oe oe a ee 114
lela @im@y IOOOU Minton 6 ae RSE ike lee ee oper ee 114
eee OC Cini) Bere re rate ete cere he eS oe 2 os See BS eels Lake en LC DDFE
227

Wo uicdlas is ric en (ie oe casey eh eho oes vein cls Vos See oe bee eet acice cetinecest

In designing this plat Silver Maple was used as the nurse tree, but ~
stock ordered was not received, so that Artemisia had to be used,
changing the character of the plat. The permanent trees are a mix-
ture of shade-enduring conifers, Red Cedar, and Douglas Spruce, with
hard woods whose light requirement is in the following order: Honey
Locust (most light), Green Ash, White Elm, Hardy Catalpa.

The count of June 30 resulted: 700 Artemisia, 25 White Elm, 42
Green Ash, 27 Catalpa, and 33 Honey Locust.

On October 1 the plat contained 697 Artemisia, 17 Elm, 42 Ash, 30
Catalpa, 23 Honey Locust, or 60 per cent of the number planted.

a To be set hereafter.

20191—No. 183——6

82
PLAT 5.—One-half acre, 3 by 3 feet, 2,420 trees.

BO -BT DBE ee ebro

MB OES Beat BM BM B

BS “BPs Be sbeebs

MB Mia So IB? NE TaB

Bo ACB DB Ses SDae aee

M. BOMB eo eb se ie

BS: BP 2b De Be hae a

M3 2b B eve Sevier,

Bs-O% Bs_DY Bee = be) eee)

MBO MB eve eB hie B
B—Boxelder: 2252.12.25 5226 SSE SSA SS 1, 210
M—Russian Mulberry 2222334255 See ae ee 605
E—Whité * Blin: . 22. 2.2 es6 5s a ee a 76
O—White Oak 2.2 2: hc202e 35S asat ee as a eg eee on ee eee 38
A-—Green -Agh oss 22 2k Ee ae ep a ee ne a 38
D—Douglas Spruce \(@).225 525. Soi. 5 Sse aes oe ato it Se er 227
JI III (1) eee cae dese corecec cco sece ce fe pass Go ec Fess seSossi5 22922522: 151
S=— White: Sprucei@) 22222 eee eee ee eee Weenie e Saka Sece 75

This plat is designed strictly on the principle of having the great
mass of the trees of shade-enduring species. ‘he nurse trees, Boxelder
and Russian Mulberry, are both shade-enduring while young, and when
they have been cut out the light-demanding species, Pine, Oak, Ash,
and Elm, are only equal in number to the shade-enduring Spruces.
Where the time spent in cultivation of trees is an important item, as
it usually is with the farmer, the use of shade-enduring species as
nurses is economical, because the ground is sooner shaded and the
period of cultivation is shortened.

Result of count, June 30,1897: 829 Boxelder, 459 Russian Mulberry,
33 Oak, 54 Ash, nid ol Elm.

On October 1 the plat contained 793 Boxelder, 482 Muieceye 23 Oak,
34 Ash, 50 Elm, or 70 per cent of the number planted.

a To be planted hereafter.

83

PLAT 6.—One-half acre, 3 by 5 feet, 1,410 trees.

Ore ive tie ke OF

1e Pe ore es P

Demo A Dish

aeetrs aa 3. P 4 P

teehee RL eR

Paes aeP >) PP

Dee ASS) He DA

iP Peo; PP

OR elie ta Oo
IPAM Socio Sas SS S085 HSS Se SU ep Re ea ee eh 705
[Neg BO CIIWAS [nee eee EE ROS ete oa oc Monk Ue weeude A SAS eee 88
JD eSNG) JENIN S35 as So FEES Se pees a 5 See nO cl nT aac 88
IDI BIBVOLE ILOCOS GAS os So rene ee es Aer ee eae a Li Acie ephaey. aes 88
C= CIID < oo Sabb bS5s SH ASS eau eye eee Se anne manne An en eae eine Cure ve here 44
Oa shen @ a arene Soret 2 Gase te a NO Sb io! ace Se bos). J. Gen ttadiee 44
[reel GECLEHE (G3) oe SRS as Bs ea Be SR ego CS yo pe 177
Dy == 1 DIDS a VS) SY OTLEY (GA) Sie es ap ee a a a pred gee eee 88
S—White Spruce (@)--.----..--- SS Sa a Se ae a eR Silene RE 88

This plan provides for a mixture of three shade-enduring conifers
with hard woods, the light-demanding Aspen being used asanurse. At
the distance of 3 by 5 feet a much longer period of cultivation will be
required than if the trees are planted 3 by 3 feet, but it is claimed that
the trees will die out much sooner at the closer planting.

On June 30 a count of trees showed 656 Aspen, 35 Oak, 33 Catalpa,
84 Black Locust, 61 White Elm, and 61 Green Ash.

The count of October 1 resulted: 633 Aspen, 29 Oak, 27 Catalpa, 72
Black Locust, 64 Elm, 41 Ash, or 82 per cent of the number planted.

aTo be planted later.

84

PLAT 9.—One-half acre, 3 by 6 feet, 1,210 trees.

Be DpeBbreCee

PB a eee:

BC 2B Da

So Bb AU -Bss

5D bc eb

BeBe aie be ae

B eC} Bs Das

S BAS By Ss
13) SCO RRB SS 6 eeno5 caso sub ae coccon scemeretadcces Eosan0 Ses SO5 coceon eos osse 605
P—Rock Pine (@)\ 2222 2-2 32 See e cose Baie aoe ee = eee ee eee eee 76
A—Austrian Pine (@),.<.-...s22s22 20st ec ec tee eee eee Cee eee eee 75
R—Red) Cedar (a) ie recon ae ne oe eel eee ee a 76
C=]White Pir (@). 22ccs. 2 eh.c esse ee a eee ree ee eee 151
D—Douglas;Spruce:(@) 22% secant cee Ore eee eee eee 151
S— Wihite Sprilcei(@) ese see cast =e eee eee Se ee a Ne A ae nats sae) Soc = 76

In this plat Birch was set 6 feet apart both ways to make a shelter
for conifers, which are to be planted when the Birch has grown enough
to protect them. The conifers are so arranged that one-fourth of them
(the Pines) are light-demanding, and three-fourths are shade-enduring.
Unfortunately, the Birch has grown poorly, only 326 being alive on
June 30. On account of the wide spacing, it will be necessary to replant
the Birches before the conifers can be set.

PLAT 7.—One-half acre, 4 by 4 feet, 1,361 trees.

BBB BB Boe
BOP BR MiB Om ise
Bee By. Bo Beebe Boa beats
Bs Ey, BAS CBee ees A
BB iB BB Be Bob
BO) Bool 13 Oe Bae’
B: Bo BS Beebe bee by ab
BB Bo AS Been abe,
BB BB Beeb baa

a To be planted hereafter.

[Beal SERGIO GP Soo aa bese Be See IC a 1, 021
OOK sa S5a5chod ce 6Sbc SARA AR SOc a 85
De HUNS, UNE Cans eed ean neoeee -4eS es a ae 85
Jha GIGS IMEI Sec age GOA CS GEE A a 85
IL IVMGE ILO@Di Ra's ac cd Saga SSS Da oe I ae ee &5

In this plat, of hard woods exclusively, three-fourths of the trees
are of the shade-enduring Boxelder and the remainder are light-
demanding species, some of which—notably the Locust—come to usable
size So much sooner than the others that it is believed they can be cut
out before the slower-growing forms will be overcrowded by them.

The count of June 30 resulted: 781 Boxelder, 63 Oak, 73 Elm, 73
Ash, and 70 Locust. On October 1 the plat contained 733 Boxelder,
45 Oak, 73 Elm, 75 Ash, 70 Black Locust, or 73 per cent of the number
planted.

PLAT 8.—One-half acre, 4 by 5 feet, 1,089 trees.

Pee Ome brie bb. Bo I

M B Bee Vil > No

Peete at BAW BH

Ve vio = ove Bs MB

eerste bb © BR. . 1

Ver bee le Bb) Me Bs M “B

BeAr sel IB A) BH

Vee breve Me Bb eM B

De Ome boleh ars 7B. ly
iB—Boxelder (Artemisia substituted im part) .....:-.....-.....--<..---..-----. 545
isi ——] APISSTEITA AY TUL YSN EE sah cP Scars la 4 ((
j= SGC WG oc Hoa ok pe Sie Se SCO SE AAO Se Oe ee ene aa eet ea a es 68
IG SIO OCR ILOCUREZ 5 > SOEs Ba ee bea © BO eae TS Sen Ae em ee 68
ISI SIOMN 7 IUOCWA HC aS SBS ea set Se eae ee 68
(Da OP a noo oc 6 BS Bic S SOS etd aS ICI SER Es pe ee ee er |” 8
eA eR ETP ert se pee ee rae ao eels = cl ae keees boos Hees be sk ees ecce Sesto!

Result of count, June 30: 281 Boxelder, 134 Artemisia, 228 Mul-
berry, 21 Oak, 34 Elm, 63 Ash, 50 Black Locust, and 56 Honey
Locust.

On October 1 the plat contained 278 Boxelder, 132 Artemisia, 228
Mulberry, 17 Oak, 36 Elm, 62 Ash, 48 Black Locust, 52 Honey Locust,
or 78 per cent of the total number planted.

86

PLAT 10.—One-half acre, 4 by 6 feet, 908 trees.
EOS 2b ere

C A= 2 Aer

M * ly VES ae;

C: Sie GA Ora

L. (GLE 6 Ee

© HAL © Bee Cees

Me Ai Ms ai Vee,

G (SAC IE.) NAR IOs ana:

Lo O° 1p) ss ba
C=Catalpa 22452520 a ee eee oh veges nenee senate oe eae ee eee 275
A=Artemisia: 202505 en ee ee ee 227
M—Russian- Mul berryaoos 2 ota ase ee Se ee is 2 ite bes
E=Black Locusts. 222 osenc a2 eee ee ee ee ete ea ee) 227
O= Oak vive seca sats Sa SSS See ae ee a on sees te ee 28
H=—Honey Locust=. 2: 225. seen oa, oe ee 28

Result of count, June 30: 136 Catalpa, 227 Artemisia, 71 Mulberry,
161 Black Locust, 5 Oak, 43 Honey Locust, and 39 Ash. (As this was
the last plat planted, substitutions had to be made on account of
varieties not holding out; hence the appearance of new varieties in the
connt.)

On October 1 the plat contained 130 Catalpa, 130 Artemisia, 53 Mul-
berry, 129 Black Locust, 2 Oak, 32 Honey Locust, or 52 per cent of the

number planted.
GROWTH OF TREES PLANTED AT LOGAN,

During the last week in July measurements of growth were made in
the plats, resulting as given in the table below. ‘The figures are the
length of new wood produced during the year up to that date. Growth
had not yet ceased, so that the figures do not represent the full growth
of the year.

| | |
Largest | Average || | Largest | Average

NEE ON growth. | growth. | Variety. | growth. | growth.
| Inches. | Inches. | | Inches. | Inches.
iEloney, Mocust2s=---5seees cee 20 Gall Oakes pee soa eerie ere By 2
Green Ashi ear en setae ee | 19 10 | White Firs. 52223525: 3200-2 | ard ce ee
Wihite: Blm= seo os-2. seat ans] 22 13 | Wihite Spruce:--- 222 =.= 2-22. eee 22 S84 coe schece:
Black Maacust: --026--42. | 35 18 Douglas Spruce ..-----.----- | 3 2
Russian Mulberry --......--- | 24 | 15 | RockwRime-scessne eee oe eget oeesese-s- eee HE
IRON EIU CRS pete een a ae 40 37 | AUStrianePinG-)= soe 2 sos ee 4 2
Catalpareeneceeeer aie a eeaee 21 11 Red Gedar. 225.25 20s aa | 6 +
Kctemisia eee ass 6iec.. S| 52 42 || Scotch Pine (seedlings) ....-- 4 | 2
Js Si teeche coe Beceeerneeeeccee 38 18 | Scotch Pine (transplants) --- 5 | 2
Mellow Birch] 22-c252---ee= | 14 7

Se eee

87

MINNESOTA.

The State University of Minnesota, in addition to the seat of the
experiment station at St. Anthony Park, supports two substations or
experiment farms, one in the prairies of the Red River Valley at Crooks-
ton, the other in the pineries at Grand Rapids. Land for forestry
experiments has been set apart at both substations, the plat at Crooks-
ton to be devoted to plantings similar to those at the other stations,
and the one at Grand Rapids to be used for replanting cut-over pine
lands and to illustrate improved methods of forest management.

CROOKSTON PLANTATION.

The land set aside for forest plats at the Crookston experiment farm
is the typical prairie of the Red River Valley, one of the most famous
wheat-producing regions of the world. The soil is a rich clay loam,
black, with very fine sand, underlaid with a stiff clay subsoil within
2 to 3 feet of the surface. This subsoil is not readily permeable by
water, as is evidenced by the great number of pools that dot the valley
in a wet season. The experiment farm is rather lower and not so well
drained as the average valley land, and the forest land includes some
of the best and some of the poorest parts of the farm.

The plantings of 1897 include five 1-acre plats. In two plats a part
of the land had been broken the year before and had never produced
a crop. The trees were set in ‘‘ back setting”—that is, the land was
broken in the summer of 1896, and in the spring of 1897 it was cross
plowed a few inches deeper than the original breaking. It was then
well harrowed before planting. The plowing was not more than 4
inches deep in this new land, and was not more than 8 inches deep in
the old land.

None of the trees were set, unfortunately, until they had begun to
leaf out, the Aspen leaves being fully a half inch in diameter when the
plants were set.

Owing to the late planting and dry weather immediately following,
avery poor stand was secured and all the plats will have to be replanted
next year. Plans and reports of stand are therefore not given.

GRAND RAPIDS PLANTATION.

At the Grand Rapids station a conifer nursery was planted, and about
1 acre of cut-over pine land was reset to Red Pine and White Pine,
nursery-grown seedlings of both species being used.

The Grand Rapids experiment farm is located about 2 miles from the
town of that name, near the Mississippi River, about 150 miles north-
west of Duluth, Minn. The region was formerly covered by extensive
pine forests of the first commercial importance, but the pines have been
largely cut away, leaving isolated pieces of uncut pine, surrounded by

88

extensive areas of cut-over lands, from which the pine has been
removed. These cut-over lands are covered with alow growth of Birch
and Aspen, with a few other hard woods intermixed, among which are
occasionally young pines, their number and species dependent on the
proximity of uncut areas.

The soil of the region is a sandy clay loam, varying greatly in char-
acter within limited areas. The better soils are being cultivated, but
throughout the region there are tracts too poor for cultivation, and
these, having once produced a crop of pine, may be reforested, and thus
be made measurably profitable. Left without care, the cut lands pro-
duce, first of all, a dense growth of Aspen, Birch, Alder,and other hard
woods in less numbers. After a time, depending largely upon the
proximity of seedling pine trees, young pines appear in this forest
cover, and if fire is kept out these seedlings will undoubtedly develop
into merchantable trees; but in thus leaving the land to nature there
is apt to be either a very poor stand of pines or an uneven stand, or
undesirable varieties may gain the ascendancy, while in any case the
danger of fire is constant.

An effort will be made at the Grand Rapids station to demonstrate
the best methods of growing pine on cut lands. Various methods will
be tried and different species will be employed, both pure and in mix-
ture. Owing to the lateness of the season when arrangements were
completed for work at this station, only a small plat was planted in 1897.

Underplanting.

In one corner of a large field from which the merchantable timber had
been cut several years before, 1 acre was roughly staked off and planted
to Red Pine and White Pine without disturbing the soil cover. The
natural growth consisted of young Aspen, Birch, and Alder, from 4 to
8 feet high, growing principally in clumps, with narrow grass-covered
openings among them. A few seedling White Pines, 5 to 15 inches
high, were found scattered among the hard woods, and toward one side
of the plat was a group of vigorous pines about 40 years old, of both
Red and White species. Jack Pine 50 feet high was also growing in
the immediate vicinity, and there were a few mature Aspens and
Birches. While the growth was sufficient to make quite a dense shade
over the greater part of the area, it was not shady enough to prevent
erass, andl the few wild White Pine seedlings were in fine condition.

The stock that was planted in had been received from nurseries and
planted in nursery rows a few weeks before, and of course this second
moving was not beneficial. The seedlings were 8 to 10 inches high and
in good condition when received. They were planted with a spade,
without disturbing the existing growth, approximately 4 by 6 feet
apart. One thousand Red (Norway) and 500 White Pine were set.
On July 15 a count Showed 680 Red (68 per cent) and 414 White (83

89

per cent) Pine living. This g:ves promise of a good stand. If half
the trees reported living become thoroughly established and evenly dis-
tributed over the acre it will insure a full stand of pine at the age of
25 years, supposing the trees are protected from overcrowding by the
natural growth.

Under favorable conditions it is safe to assume that pines set 8 by 8
feet in cut-over lands will make a good stand. This would require 680
trees per acre. So much depends, however, on care of stock, skillful
planting, atmospheric and soil moisture at planting time and during the
first season, and density of existing growth that it would be much safer
to plant 6 by 6 feet apart, or at the rate of 1,210 trees per acre.

In this connection it may be stated that an experiment of a similar
nature has been undertaken in the planting of deforested pine lands of
Pennsylvania, Mr. N. T. Arnold, of Ridgway, Elk County, having kindly
offered the use of land for this purpose. The first planting was made
at Ridgway in November, 1897, and a report can not therefore be
included in this bulletin.

EXPERIMENTS WITH NURSERIES FOR EVERGREENS.

At each of the stations small evergreens were planted in nursery
rows or in shaded beds, preparatory to setting them in the plats later.
The plantings were practically a failure at all the stations save Grand
Rapids, Minn., which is within the natural pineries. _The poor stand
secured is the result of several causes.

The methods employed in transplanting evergreens at the leading
commercial nurseries are so simple that it would seem easy to put them
into practice. The seedling trees are taken from the seed bed, or the
young transplants from the nursery rows, care being taken to protect
the roots from drying. A furrow is opened with plow or spade, the
seedling is placed against the straight side of the furrow at just its
former depth, and the earth is drawn up over the roots by the planter,
who thus passes quickly along the row on his knees, doing all the work
by hand. A second man follows with a block of wood, with which he
tamps the soil firmly on the root, and a third man levels up the ground,
leaving the surface soil loose, to act as a mulch. Sometimes the entire
work is done by one man, but the process is usually and more expedi-
tiously done as above described. Great difficulty was experienced in
getting the workmen to follow these simple instructions. Hither the
trees would be set too deep or the soil would not be well packed about
the roots, or the roots would be exposed neediessly while planting, any
one of which causes is sufficient to kill the trees. The professors and
foremen in charge of the work did everything 1n their power to have it
properly done, but with inexperienced men it was impossible to secure
the best planting.

While poor workmanship must be held responsible for a share of fail-

90

ure, the principal difficulty must be attributed to the climate. Not
only is the soil of the plains more compact and less moist than that
of the lake region, where most of the large evergreen nurseries are
located, but the air of the West is much drier, and there are almost
constant winds which increase evaporation. The newly planted trees
are thus subjected to much more severe conditions than those under
which they were grown. Under the most favorable conditions of trans-
planting there is apt to be a greater loss in conifers than in hard woods,
and in the case of seedling evergreens that are shipped long distances
to dry climates heavy losses are not surprising.

In some cases the trouble began at the nurseries, where the stock
was not sufficiently protected from the air while the trees were being
dug and packed, and where the packing was so loosely done that the
trees dried badly in transit. One shipment was made so late that the
trees sprouted badly in the boxes, and the delicate young growth
withered on exposure to the light.

Very few of the Western commercial nurseries beyond the immediate
influence of the Great Lakes attempt to grow coniters from the seed,
having learned from experience that it is more profitable to buy the
young seedlings. Beyund the Missouri the difficulties of nursery care
for conifers are so much increased that it is the almost universal prac-
tice of nurserymen to purchase their evergreen stock as needed for
orders.

These facts do not show that the evergreens are unsuitable for plant-
ing in the plains, but they emphasize the difficulty of securing a good
start. The trees once established are as easily cared for and quite as
sure of success as any of the broad-leafed species, perhaps even surer.
With favorable conditions at planting time and during the first season,
the majority of conifers will become so well established as to withstand
as great Vicissitudes as the hard-wood trees. Like the hard woods, their
rate of growth will be affected by the season, but the record of the
Scotch Pine and the White Spruce at Brookings station indicates that
the trees are fully as well adapted to that location as are any of the
Species tested there. At many localities in the plains conifers are
growing well. It is evident, therefore, that once a successful method
of bringing the trees through the first few years is discovered, the
principal difficulty in coniferous planting will have been met.

When the stock was received at the several stations, the roots were
well puddled and the stock was carefully heeled in, in a shady place,
to await favorable weather for transplanting. Moist, cloudy weather,
with fresh soil, are the best conditions for transplanting, but these con-
ditions can rarely be commanded in the West, and in some eases, after
waiting as long as possible for good weather, it became necessary to
plant the trees during bright days, in rather dry soil. A continuance
of clear weather resulted in constantly increasing dryness, so that
many of the trees died before rain came. The men had been carefully

ot

instructed to carry the stock with the roots fully protected, either by
covering with moist earth or with water, and to plant firm, setting the
trees at just the depth they stood before. At all the stations part of
the seedlings were planted under a lath or board screen and part of
them in nursery rows, the space between the rows being mulched with
old straw, which when first applied reached to the tops of the trees.

The count at the several stations was usually made by workmen who
could not distinguish the several species of Pine, so that the reports are
too defective to admit of comparing the methods of protection. In
general a slightly better stand is reported under the lath screens, but
the difference would hardly warrant the increased cost. The stand
secured, as reported October 1, ranged from 17 per cent to 60 per cent
at the different stations. Red Cedar made the best stand at all stations
and Rock Pine the poorest.

The number of evergreens set at the several stations, with the number
alive at the end of the growing season (October 1), is as follows:

seen [Number | Nupbe
| planted. Oct. 1.

CCPL Sop RTE ere eet ene ee te oe aes ae loin wel nie ein, ojsiclale sels < cine =-e = =! = cies =e | 28,500} 26, 900
Temas Peitayesey, Sh WA es ss deal eee a ee ee | 12.2960| 7, 445
Ain GOMMONG DiEseere acini ne aes aioe alae ee epince ace nsanecekelseeisesciecec (iis Ler kel 5, 700
Marth ata akan eemea pe sene 2 2.2 2s Ess Sk Ca ON en SO re ee ee Eee | 25, 900 | 4,500
Tove. Chillitine,, Ca Waseca See cae Sa ese ea can | 18, 000 | 5, 400
NGO ation Wibaleereceee mie tereereeie ere ciate stale eine lero fevers asiayes cee aie aloe sisineste cic Siosicieesias | 12, 500 2, 895

EVERGREENS FROM SEED.

At each of five stations evergreen seed were planted in the spring
of 1897, and as the results may fairly be considered such as any farmer
might secure, the experiment is here given in detail. Directions for
the preparation of the soil, the making of the screen, planting and
after care were sent out from the Department, and the work was under
the superintendence of the professor of horticulture at the several
experiment stations.

Seeds of the following varieties were planted: One-fourth pound
Red Pine from northern Minnesota; 2 pounds Rock Pine; three-fourths
pound Douglas Spruce, and 14 pounds White Fir, all from the
Rocky Mountains of Colorado.

The directions sent to the professors of horticulture at the several
stations follow:

DIRECTIONS FOR EVERGREEN SEED BED.

1. Select a site that can be watered if necessary, choosing a sandy loam soil, which
should be plowed or spaded 12 inches deep and then made thoroughly fine through-
out. Make the bed 5 feet wide and as long as necessary to accommodate all the
seeds.

92

2. Before planting, set the posts (2 by 4) for the screens, the posts to be 1 foot
above surface of bed. Nail a 6-inch board close to the ground on south, east, and
west sides of bed, and a 4-inch strip on all sides, flush with top of posts.

Make the frame of screens of ‘‘ five-eighths” or ‘‘three-fourths” stuff, the frames to
be 3 by 5 feet. Cover with lath set three-fourths inch apart. Over this tack thin
sheeting.

3. Plant the seed in drills, crosswise of the bed, 4 inches apart. A few seeds of
each species may be sown broadcast, if desired, by way of experiment.

Cover not more than one-half inch, and firm the soil gentiy over the seeds. A few
rows of each species should be covered with clean river sand, same depth as others.
If perfectly clean sand can not be had. cover all with soil.

4. As soon as planted the bed should be shaded with the cloth-covered screens. In
case of prolonged dry weather, before the seedlings sprout, a good sprinkling should
be given.

5. The bed should be kept free of weeds, and no crust should be allowed to form
on the soil. When the seedlings are well up the cloth can be removed from alter-
nate screens; this is to test the efiect of different degrees of shade on the seedlings.

6. As the dry season approaches various experiments in mulching may be under-
taken. Clean sand spread all over the bed, old straw, cut straw and prairie hay
can be used for this purpose.

7. In case ‘damping oft” occurs, there should be kept under a cover a supply of
perfectly dry sand which should be sprinkled lightly among the seedlings.

8. During the dry weather an occasional thorough watering should be given.
When the surface soil has dried after each watering, the crust formed should be
broken. Of course, when the seedlings are mulched no crust can form.

At the Colorado and Utah stations the seed was sown by the writer.
The seed bed at the Colorado station was so divided that a portion of
each variety of seed was planted under the following conditions:

(a) In soil—

1. Covered with soil.

2. Covered with sand.

5. Covered with black loam from the mountains (almost pure
humus).

(b) In soil mixed with about equal parts of pure sand to a depth of
6 inches.

The soil used is the usual clay loam of the region, the seed bed being
located where it could be watered when necessary with hose.

The seed of all varieties were’ sown equally thick in the rows, the
drills being about half an inch wide and the seed not os touching
each other in the drills.

Under date of July 19, Professor Crandall, the horticulturist of the
Colorado station, writes:

No count was made at the time of germination, so that the percentages of loss by
damping off can only be approximated. The germination I should place at very near
100 per cent; the young plants stood very thick in the rows, and it seemed to me
that every seed must have produced a plant. Damping off began early and, in spite
of all our efforts to check it, continued until most of the plants succumbed. We
used dry sand freely and were careful in the application of water, but were unable

to check the trouble. The trees now living are apparently in good condition, and I
anticipate no further losses from damping off.

93

The living trees were counted July 10, with the following result:

: ‘ Number | Number | Average
Variety. Soil and cover. of rows. | of trees. | per row.
WMouglas spruce.2-----~----- Soil covered with sand ...----.......... 5 350 70
MO Fee ee smstetsiaac cise <'era%s Soil covered with soil-..----.----.....-. 9 830 92
1D YN SOO aA Se ee ree Soilicovered with loam! 2222-5-----.----- 8 310 39
iL) OME ree eee eeee SG Anal seinG | cascade Seenasoosocaqueonge 8 600 75
INGEN caasccdossooassollesokaokoocadssd cocdgnSbodd sss ode nescc464Es |lSsnaseseaere 2H O90) Ss2eee sees
RockePinekese sees cake ees Soilscoveredawathiloam)2242----2----.-4- 11 75 ay,
IDOE sancuecsasoeeubedTee Soil covered with sand...-...--.--.--.-- 10 525 52
WD Qe eerie ein coarse Solan sand iaaccsesceccc- so Sisi--iccean 16 600 31
LUO ooocenees S600 and looaesocddenoTdesoanococHoSboSoUnbNSdoasEcd| lseessossad JR 2000|Eeaaeeare
IR IP acigceneeeeecaoeaeen Sollfam Gs ad eerie eyleteeter eras <i \cisiniciar alee 9 50 5
Wahi e@nloire ness ereeee mee roe Sorlvandesandtand: loam -s-)- sete cs 5 55 | 11
DOME ase ot ete ne emt Solleloammnandesan disease se eee a 70 | 10
1D et eae Bea eet Soilicoverediwathiloameee-ccesoss eee 10 100 10
DO SeAeeas oe ieasesdoe eas Soil’ covered awithisoila.-.. 5. -----/---2-- 9 50 5
Tiviellwcdoddetce betel bentetecccadeee ee a 551 | Sone
(Crane) Wau le eadeo aeeea se noosenead sobaes oy. 3,615 | chee

The report of October 1, 1897, was as follows:
Douglas Spruce, 1,230; Rock Pine, 678; Red Pine, 297; White Fir,
246; total, 2,451.
It will be observed that the Douglas Spruce damped off least and

Red Pine most.

The entire seed bed received the same care, and the

differences resulting from different cover on the seed are too slight to
be significant, except that the black loam from the mountain canyons

seemed not so good as either soil or sand.

affect the young plants in their first year.
At the Utah station soil and sand and a mixture of these were used

for covering the seed. In June the horticulturist of the station esti-

mated the stand and the germination from damping off as follows:

The seed cover could only

Germinated. | Damped off.
About 2 About }.
About About .

About} About $.
Oe ited | nereevetarieiie sieve

It is probable that the seed bed was not so well watered here as at
the Colorado station, where especial attention was given to watering
the bed before the seedlings appeared.

At the Kansas station a part of each kind of seed were sown broad-
cast, and on June 30 Professor Mason reports the broadcast sowings

94

better than the drill sowings The stand at that date, damping off
having ceased, was as follows:

Red Pine, sown in drills and covered with sand, 25 per cent of a per- |
fect stand. Remaining sowings of Red Pine germinated freely, but
almost all died; Rock Pine stand, from 50 per cent to 80 per cent;
Douglas Spruce, from 30 per cent to 70 per cent; White Fir, almost a
failure.

At the Lincoln (Nebraska) station the seed germinated well, except
White Fir, which was a complete failure. On July 2 80 per cent of
the Red Pine, 60 per cent of the Douglas Spruce, and 70 per cent of the
Rock Pine seedlings were reported dead, the totals of living trees being

26 Red Pine, 1,682 Douglas Spruce, and 619 Bull Pine.

No report has been received from the South Dakota Station.

A wider spacing of the seeds has been recommended as a preventive
of damping off. It is the common practice in the commercial nurseries
to sow evergreen seed broadcast in carefully prepared beds, slightly
raised at the center to insure surface drainage. In most nurseries the
soil is either naturally sandy or else a large admixture of sand is
forked in to further insure perfect drainage. At one of the leading
nurseries, where growing from seed is very successful, the seed are
sown broadcast in flat beds about 4 feet wide, and lath screens are
immediately laid on, in contact with the surface of the bed. On top of
the screen a mulch of old straw about 3 inches thick is placed, and the —
watering is done on the straw. The beds are watered freely, and when
germination begins the screens are raised 4 to 6 inches by placing
blocks under them. When the majority of the seeds have sprouted
the mulch is gradually removed, and the beds are said to receive no
special care thereafter, except necessary watering.

At several of the leading nurseries large screen houses, 4 to 6 feet
high and often over an acre in extent, are used in place of low screens,
and the seedlings are transplanted once within the screen house before
removing them to the open.

In alarge Wisconsin nursery Bull Pine is grown from seed entirely
in the open, the beds receiving no shade whatever from the time the
seeds are sown. |

In a central Nebraska nursery, which has since been abandoned,
Rocky Mountain evergreens were grown from the seed in a screen house,
which, built of lath in the ordinary way, was made much more shady
by the addition of cat-tails and rushes. The sides were made almost
tight with brush and rushes, so that the structure afforded a much
greater degree of protection than is provided by the nurserymen of the
Lake region and the East. I visited this nursery after seed sowing
had been abandoned, but the evidence of successful culture was still
evident. The tiny trees were twice transplanted within the house, and
the third planting was in nursery rows in the open, where thorough
culture was given.

©