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UNIVERSITY OF ILLINOIS
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UNIVERSITY OF ILLINOIS

Agricultural Experiment Station

BTLLKTIX Xo. 327

CROP YIELDS FROM ILLINOIS SOIL
EXPERIMENT FIELDS IN 1928

BY F. C. BAUER

rHBANA, ILLINOIS, MAY, 192!)

LOCATION OF THE THIRTY-ONE EXPERIMENT FIELDS IN ILLINOIS FROM

WHICH DATA ARK PRESENTED ix THIS BULLETIN

CROP YIELDS FROM ILLINOIS SOIL
EXPERIMENT FIELDS IN 1928

By !•'. ('. H.UT.K, Chief, Soil Kxpcnment I-'u-Kls

Variation in crop producing power is a natural characteristic of
agricultural soils. It is evident not only between soils in different
locations, but also on the same soil in different seasons. Frequently
it is quite marked. With some soils their productive power assumes
a gradual upward trend, while with others it assumes a gradual down-
ward trend. Obviously, the causes of these variations and the con-
trol of them are matters of considerable importance in the successful
management of farm lands.

1 he crop-producing powers of -oil-, in a broad sense, vary because
ot the natural differences between soils and the systems of farming
pract iced upon t hem. Alt ho nat lire tends to work in accordance wit h
natural laws, the influence pf natural conditions on soil productivity
may be accelerated or retarded by the work of man. The best use
ot tarm lands, therefore, will depend to considerable extent upon the
knowledge which farmers possess concerning the soils upon their
farms and the cropping ami treatment practices which they will use
upon them. In general, the farmer is interested in the simplest things
he may do that will give him the maximum benefits from tin- use of
his land.

In order to furnish the farmers of the state with information that
would be helpful to them in planning systems of soil treatment for
their farm-, t he Illinois Agricultural Fx peri men t Station for a number
ot years has conducted field investigations in all sections of the state
on extensive -oil type.-, varying widely in productiveness, to test the
effectiveness of different systems of soil treatment on the yield of
larm crop-. Alth.o some investigations alonn this line had been in
pro<rre>- ai Frbana since l^-Td. the first outlying soil experiment fields
were not established until the fall of I'.t'U. Some of the original fields
are .-'ill m operation. In all more than fifty -oil experiment fields
have been established in Illinoi-. Some have been abandoned at one
time or anot her tor va nous reasons. I )u rinu' the crop season of I (.)'2S
thirty-one of these fields were in operation. The location of them
within the state may be ascertained by referring to the accompany-
ing map.

L he complete iv-ult- from all the Illinois soil experiment fields
tip to and including I'.t-'i were reported in llnlletin L'TM. Subsequent
results, have been reported in Bulletins L'M>. L)(.H). and :!().",. The pres-
ent bulletin i- a continuation of thi- series of publications, beini: a
record of the vields for the vear llrjs.

212 BULLETIN- No. 327 [May,

In these publications the crop yields arc presented as a matter of
record without comment or discussion. In a broad sense, of course,
the results speak for themselves, and carry definite lessons to those
who have been following the investigations of the station. Discus-
sions of these investigations have appeared from time to time in
former station publications and further discussion of an interpreta-
tive nature will appear in future publications.

Explanation of Tables and Symbols

The results reported on the following pages are for the individual
fields arranged alphabetically rather than by location or by soil
types. All yields, except those in parentheses, indicate acre yields
in bushels. Yields in parentheses indicate acre yields in tons.

The following symbols have been used in this bulletin to denote
the soil treatments applied:

0 = No treatment rP = Rock phosphate

M = Manure sP = Superphosphate

R = Crop residues bP = Bone phosphate
Le = Legume catch crop S — Flowers of sulfur

L = Limestone KC1 = Muriate of potash
K = Potash

The crop residues are chiefly cornstalks and sweet clover plowed
down as a green manure. In some cases the second crop of clover
and other legume residues have also been plowed down.

When legumes are used as a catch crop, they are seeded in small
grain to be plowed down the following year for succeeding crops.

1929]

CROP YIELDS FKOM ILLINOIS SOIL EXPERIMENT FIELDS IN 1928

TABLE 1.— ALEDO FIELD: MAIN SERIES

Serial
plot
No.

Scries 100 Series
Oats" Stubble^ 200
Soil treatment clover Second-
Oiubani) year
corn

Series
300
First-
year
corn

Series 400
Wheat Stubble
clover
(sw. cl. )

WEST HALF

1
2

3

4

5

6

i

s

9
10

0

73

.4
. i
.6

.0

. i

A
• >

.S
0

9

( 0 )

( o )

( . 59 ')
I .G9i

( 0 )
( 0 )
( .52)

( -SO)

( .571
I 0 >

61
73
73

7."i

5S

til
70
7!

73
59

.4

.6
•>

.4

.0
,6
.6
•y

.6
.8

54
71
69
70

54
OS
74
73

77
59

.2

.2
.4
.6

.4
.6
.6
.4

.6
.6

28
41
42
43

35

37
41
39

44
30

.3

.0
.7
.3

.0

.7
.3

.7

.2
.8

( 0 )
(1.93)
(2.07)

(2.42)

M

. . . . 79

ML. . . .

. . SI

MLrP. . .

90

0

64

R

73

RL

RLrP

RLrPK . . .
0. .

S2

So
70

EAST HALF

1

2

3

4

5

6
i

s

9
10

RL

70

.3
.4
2

.9

.9
.9
9

( .37)
( 0 )
( .01)

( .t>9)

(' 0 i
( 0 )
( • 55 .)
( .03)

( .59)
( .62)

67
76

71
07

65
72
71
70

71
09

•>
2
.0
.0

,8

.s

.0
.4

.6

.8

69
69
69

70

64

70
72

i i

80

69

.6
.8

.8
.6

.4

.6
.8

2

.2

.0

38.0
41.7
44.3
41.3

38.2
39.3
40 . 5
36. S

42.7
38.3

( .78)

( 0 )
( 0 )
(1.93)
(1.86)

(2.51)
(2.19)

MrP

84

MLbP

92

MLrP .

91

RsP. .

. . . . 70

RrP. . . .

SO

RLsP.. .

SI

RLrP

81

3

.4

(i

KLrPK.

84

RLrP

76

Note. — In 1924 the plots on these series were divided into east, and west halves
in order to provide for additional phosphorus studies. The plots on the west halves
of all scries continue under the original soil treatment but the plots on the east halves
receive the treatment designated above. No more rock phosphate will be applied
to the phosphate plots on the west halves for an indefinite period, these plots having
received a total of S,000 pounds an acre.

On the east halves all phosphorus fertilixers will be applied twice in the rota-
tion, ahead of the wheat crop and the first corn crop, at the following annual acre
rates: rock phosphate 500 pounds, superphosphate 200 pounds, bone meal 200
pounds. The minimum amount of limestone necessary for the successful growth
of the clover green-manure crop will be applied to Plots 1-E and 10-E, 4,000 pounds
an acre having been applied in 1924.

TABLE 2. -ALEDO FIELD: MINOR SERIES

Serial
plot No.

1

•)

3
4

Series 500

Soil treatment

Corn

R. .

69. S

RbP

71 7

RLbP

7>> 3

RL.

. 72.0

Series 600
Soil treatment

Corn

R. .

. 71.3

RsP

. . . 73.2

RLsP

. . . 74.9

RL.

. 74.4

214

BULLETIN Xo. 327
TABLK 2. — Concluded

Scries 700
Soil treatment

Scries 800
Soil treatment

1 R 72.8

2 RrP 74.3

3 RLiT 76.5

4 RL. . 74.6

[Mai,

Corn

R 70.4

R, slagP 69.3

RL, slag? 71.0

RL. . .75.1

TABLK 3.— ANTIOCH FIELD: SERIES 100

Plot
No.

Soil treatment

Oats

Plot
No.

Soil treatment

Oats

1 0 53. S

2 LrP 62.5

3 LHrP 71.3

4 LbP 75.9

5 LKrP. . . 60.0

6 LllbP 76.3

7 LRK 52.2

8 LKbP 72.5

9 LRKbP 66.3

10 RKbP. . .73.4

Note. — At Antioch, beginning with 1924, rock phosphate has been applied to
Plots 2, 3 and 5 at the annual acre rate of 500 pounds; one-half of the rotation appli-
cation is made ahead of the oats crop and one-half ahead of the wheat crop. The
soil treatment remains unchanged on the other plots.

TABLE 4.— BLOOM INGTON FIELD: SERIES 100

Plot

NORTH HALF

SOUTH HALF

No.

Soil treatment

Soil treatment

1

R

. 49.0

0...

. 33.4

2

RLbP

52 2

RL

35 2

3

RLrP

. 64 6

RLsP

59 6

4

RLbP

. . . 49.6

RLbP

60.0

5

RLKrP

. . . 56.2

RLKsP

55.6

6

RLbP

55 S

RLbP .

60 4

7

RLKrP

58 4

RLKsP

62 8

8

RLKbP

. 56 2

RLKbP

63.0

9

RLKbP

60 4

RLKbP

62.6

10

RKbP

51 2

RKbP

5.x ()

11

RrP

. . . 47.4

RsP

57 . 2

Note. — At Bloomington in 1924 an additional plot was laid out at the east end
of the series. All plots were, divided into north and south halves and the soil treat-
ment planned as follows: Residues (cornstalks, the second crop of red clover, legitme
green-manure crops > to be turned under on all plots except Plot 1-S. Different
phosphorus carriers to be applied at 1 he following acre1 rates per rotation: bone
meal, .1,000 pounds, to Plots 2-N, 4-\, 6-N, S-N, 9-N, and ,10-N; rock phosphate,
2,500 pounds, to Plots 3-N, 5-N, 7-N, and 11-X; superphosphate, 1,000 pounds,
to Plots ;•!->, 5-S, 7-S, and 1 1-S. Two-fifths of the rotation application of these phos-
phates is to be made ahead of the oats crop, two-fifths ahead of the wheat crop, and
one-fifth ahead of the first corn crop.

1929} CHOP YIELDS I-'KOM ILLINOIS Son, KKPKHIMKNT FIKLDS IN l',»L's
TAHLK 5.— CARLIN V1LL! : LILLD: MAIN SERIES

Serial Series Series
plot Soil treatment 100 200
^(->- Corn Oats

Series Series 400
300 Clover-
Outs' alfalfa

1 0 32 .5 30 2

39.5

60.5
59.5

52.0
53.6
00.5
59.2

(>() .<)

47.5

(1.51)
(2.27i

(4^28)

'1 .92 >

(1 .99 •
1 3 . 29 ;
:•! .85 •'

'4 .(19 I
(1.87)

2 M 42 '.l 40 S

3 ML . (10 2 43 1

4 MLrP (11 5 44 2

5 0 . 22 0 31 7

(> R •'•' 7 25 (i

7 RL 4(1 1 35 0

S RLrP 4^ 7 3S 0

M RLrPK fi'i 1 41 1

10 0 2(1. l.i 34.1

'Wheat winterkilled; oats ^rown as a substitute crop.
TAHLK (>.- -CAMLI X VI LLL FIKLI): MINOR SKKIKS

Serial Series 700 Sent
pl°t ^'"- Soil treatment1 Soil tn

•s SOO
'atment '

Oats2

1 LeL i 1,000 ') 40 <) LeL 1 5,000") .

43 1

2 LeL (4 000 40 1) LeL i20 000

53 4

3 LeL r',000 . . 3'.» 1 LeL i 10,000 i

57 5

4 LeL 2,000 , treble sP 47.5 LeL 10,000
5 LeL i 2,000 , sP 47 ^ LeL ' 10 000

, treble sP. .
, sP.

. 59.1
. (12 .5
(10 3

(1 LeL '2,000 , rP Hi 3 LeL : 10 000

, rP

1. -'.OOO . . 37 .2 L 10.000 .

. 54 . 1

TAHI.K 7.— CARTHAGE FIKLD: MAIN SKKIKS

Series :;,00 Series

100
Clover

1

()

43 s

M .

(10 (1

3

Ml

(l^i S

1

MLrP

7'' 7

5

0

(s x

t;

M

5tl (1

-

ML

t'r2 2

S

MLrP.. . .

(12 . 5

0

.S2
1 .(.)(!

216

BULLETIN- No. 327

TABLE 8.— CARTHAGE FIELD: MINOR SERIES

Serial
plot
No.

Series 500

Series 600

Series 700

Soil treatment1

First-year corn
West' East

Oats

Stubble Second-year corn
clover2 West East
West

1

2
3
4
5
6
7
8

RL

00.0
64.0
59.6
64.4
63.6
68.6
74.0
70.4

60
61

71
72

66
78
74
72

.0

2

'6
.4
.4
.0
.0
.0

45.0
43.4
44.1

42.5
46.6

47.2

48.8
47.2

(1.40)
(1.30)
(1.30)
(1.00)
(1.10)
( .90)
( .90;
( .90;

46

47
48
43
38
46
45
51

.4
.6
.4
.6
.0
.0
.2
.6

42.4
50.4
45.6
53.6
56.4
46.0
45.2
49.2

RLrP
RLrP
RLrP
RLrP
RLrP
RLrP
RL. ..

(100) . .

(100), gypsum
(200 )

(100 )

(200), gvpsum
(400)

(200)

(400), gypsum

(400)

'The figures in parentheses indicate the annual acre rates (pounds) at which
rock phosphate and gypsum are applied. -The fall growth of sweet clover is regularly
removed from the west halves of the series and the corn following is harvested by
half plots.

TABLE 9.— CLAYTON FIELD

Serial
plot
No.

Series
Soil treatment 100
Oats

Series
200
Corn

Series 300

Series
400
Clover

Wheat

Stubble
clover

(sw. cl.)

1
2
3

4

5
6

7
8

9

10

0..

41

.3
.3
.5
.6

.3

8
.8
.4

.0

s

46
81
91

89

40
54
71
67

S6
46

.6

.7
2
.6

.7
.S
.5
.9

.4

.9

23
34
42
45

19
27
39
39

41

18

.3

.0
. i
.4

8
.5
.0
.6

4
9

(1

(1

(1

0 )
.09)
.15)

.74)

(1
(1

(1

(1

.45)
.90)
.69)
.78)

.45)

.08)
.04)

.87)'

. 56 )
.41)

M

.... 56

ML

72

MLrP. .

76

0..

51

R

53

RL

73

RLrP. .

74

RLrPK

75

0

52

'Clover on Plot 408 was damaged in spring by standing water,
(See opposite page for Table 10)

TABLE 11.— DIXOX FIELD: MINOR SERIES

Serial
plot
No.

Soil treatment

Series 500
Alfalfa

Series 600
Second-year
corn

Series 700
First-year
corn

Series
800
Oats

1-N

K.

( 0 )

49 6

53 6

50 3

1-S

0 . .

( 0 )

47 2

49 4

62 5

2-X

MK.

( o )

55 6

65 2

54 1

2-S

M

( 0 )

62 2

59 0

60 0

3-N

MLK .

(1 74)

67 2

67 S

70 0

3-S

ML . .

(1 50;

65 6

63 2

54 1

4-N

MLrPK

(2 56)

68 2

69 S

70 0

4-S

MLrP

(2.29)

63.4

56.6

57 . 5

1929} (.'HOP YIELDS I-'HOM ILLINOIS Son. I-'XPKKIMKNT I-'IKLDS i\ 192S

TAIU.F. 10. DIXOX FIKLD: MAIN SEIUES

Series Series Series Scries

Soil treatment 100 200 300 400

Oats Corn Wheat Soybeans1
SofTH HALF

44.4 47.0 14.7 (1.00)

00.0 05. s 23.5 (1.02)

71.9 74.2 30.7 (1.07)

71 9 74 .0 39.0 (I .OS)

4f).G SS.2 22.3 (1.00)

37. S 35 S 25.5 (1.72)

50,3 f)S.2 32.2 (1.50)

54 1 01.2 31.2 (1.56)

HLrl'K 54 1 GG.O 30. S (1 .40)

30. S 20.0 (1.4S)

RL 43. S 402 19.3 (1.55)

Mrl' 02 s 09 4 32 3 (1.71 )

M IJ.l' 07. s 73. S 35. S (1.43)

MLrl'. . 00.0 7S.4 37.2 i 1 .59 >

in 1 II.i-l'. . 49.7

Note. In l'.»2 1 t lie plots on T hcsc scries were divided into imrl h and sout h halves,
and some additional investigations \\cre betrun. The plot< on the soiuh halves
of all series continue under the original .-oil treatment, luit the plots on tin- north
halve< receive the treatinent dcMirnated above. No more rock phosphate \vill be
applied to the pho-phate plot- on the -oiit'n halve- for an indctinite period, these
having; i-i-ceived a total of s,(HH) pounds an acre. The same holds true for the north
half of 1'lot li of all scries.

i Mi the north halve- the phosphatic fertilizers and jrvp-nm are applied twice
in the rotation, one-half of the rotation quota ahead of wheat, and one-half ahead of
corn, at the tollo-,vinu; annual acre rates: ro.-k pho-phatc .")()!) pomid<, -upernho-phate
2(10 pounds, bone meal 2ni) pound-, ii\\'p-um 2iH) pound-.

The minimum amount of limestone ncce-sary for t he -m-ee--fiil irro\vt h of clover-
will be applied to Plots 1-N and 10- N on all Series, 4,0(10 pounds an acre havin;;
been applied in l'l_)|.

'Sovbean^ were m'o\vn on Scries loo as a .-nb-titiite for clover.

218

BULLETIN No. 321

TABLE 12.— ELIZABETHTOWX FIELD: MAIN SERIES

Serial1 Seric>s
plot Soil treatment
Xo. Corn

Series
200
Wheat

Series
300
Clover-
alfalfa

Series
400
Wheat

Series
500
Alfalfa

1
2

3
4

5
6

7
S

9
10

0. . .

14

.5

.8
.8
.1

.5
.6
.0

Q

2

i

4
11

10
4

2

2

.4
2

.4

9
.1

2
.5

( 0 )
( .60)
(1.39)

(1.88)

( 0 )
( 0 )
(1.01)

(1.85)

(2.28)

( o j

1
2

6
6

1
1
3
3

4
1

.7
.9

.5

.8

.7
.2
2

'.5

.3
.6

( o

( 0

(1.

(2.

( o
( o

( .
(1.

(2.

( o

37

32

7*')
51 1

36

M.. ...

. 11

ML. . . .

. 29

MLrP. .

33

0. .

3

R

2

RL

21

RLrP

30

RLrPK .

30

0

15

. *.

lPlot 1 on Series 100, 300, and 400, and Plot 10 on Series 100 and 200, lie on lower
ground and are naturally more productive.

TABLE 13.— ELIZABETHTOWN FIELD: MINOR SERIES

Soil treatment

Plot A
Corn

Plot B
Soybeans

Plot C

Barley1

RLsP. .

38.0

(1.63)

7.1

RLrP

41.0

(1.52)

4 r,

y was grown on Plot C as a substitute for wheat.

TABLE 14.— EXFIELD FIELD: MAIN SERIES

Serial
plot
Xo.

Soil treatment

Series
100

Oats

1

0

10 5

2

M.. . .

17.2

3

ML

35 9

4

MLrP

40 6

.)

0. . .

13 . 1

G

R . . ....

13 3

RL

3s S

s

RLrP.

41 4

9

RLrPK .

56 1

10

(J..

1 2 . 5

Series
200
Corn

1 .8
35.6

50.2

6

1.1
3S.6

42.4

44.1
1 .7

Series
300

Series
400

Oats1

Timothy-
hubam

24.8
28.9

( .60'-

( .82)

« .04 i
(1.95)

1 1 .77,1

(2.37^
'. .61,

1929]

CHOP YIKI.DS FKOM ILLINOIS SOIL KXTKUIMKNT FIKLDS IN 192S

219

TAHI.K 15.— ENFIEL1) FIELD: Mixou SERIES

Serial
plot

No.

1-W L,
1-E L.

Soil treatment '

2-W LrP (.2,000) si' (lOO'i, sweet clover.
2-E LrP (,2,000) sP (,100 j, ml clover. . .

3-W LrP (2,000), sweet clover.
3-E LrP, (2,000), red elover. .

4-W LrP (2,000) sP (200), sweet clover.
4-E LrP (2,000), sP (200 i, red clover. .

5-W LrP (2,000), sweet clover.

5-E LrP '2,000;, red clover. .

6-W L, sweet clover.
tl-K L, red clover. . .

Series

700

Oats2

24.4
30.0

30.6

40.0

24.4

40. ti

23.8
38.8

23 1
33.8

19.4
20. 2

Series

soo

Corn

19.4

19.5

19.9
19.9

18.8
20.0

16.5

18.4

16.9
17.7

12.4
16.3

Serial
plot
No.

1

TAIU.K 1»).---I-:\VIN(; FIELD: MAIN SKUIKS

Soil ireut incut

Series
100
Oats

0 .5

2 M 7.7

3 ML 33.9

4 Ml.rl'.. 35.9

1J RLrPK
10 0. .

1 .6

Series
300

Series
400

Oats1

Huhain
clover

8.0
12. 8
35.9
40.5

( 0 )

( o )

(1.38)
(1 .58)

15.5
L3.3

38 .3
34.5

( o )

( 0 )
( .90)
(1.13)

4s.il
15.5

a. 54)

( 0 )

220

BULLETIN Xo. 327

[May,

TABLE 17.— EWIXG FIELD: MINOR SERIES

Serial
plot
No.

Soil treatment

Series
500-X
Oats1

Series
500-S
Oats

1 MLrPK, no clover

2 MLrPK, white biennial sweet clover. .

3 MLrPK, red clover

4 MLrPK, hubam clover

5 MLrPK, alsike clover

6 MLrPK, yellow biennial sweet clover .

Xote. — These series were replotted from what were formerly Plots A and B.
Prior to 1917 fertilizers had been applied as follows: manure X tons, limestone S tons,
rock phosphate 6,000 pounds, and kainit 2,400 pounds per acre. With the excep-
tion of limestone used when necessary to grow the clovers, no more fertilizing ma-
terials will be added. A study will be made of relative value of different clovers as
the source of organic manure in a rotation of corn, oats, and wheat (clover catch crop .
JOats were grown on Series 500- X as a substitute for wheat.

TABLE IS.— EWIXG FIELD: MINOR SERIES

Serial
plot

Xo.

Soil treatment1

Series
700
Oats2

Series
SOO
Corn

Series
900
Oats

1

Le....

15.9

1 4

2 S

2

LeL. .

20 t)

fi (»

4 4

3

LeLsP

(100)

27 5

ti 0

13 1

4

LeLrP

( 200 )

31.3

S 2

19.4

5

LeL. .

23 4

r, s

3.1

6

LeLsP

(200 )

2C> ti

6.1

9.7

7

LeLrP

(400 i

2i.7

s.o

(3.9

('nor YIELDS FROM ILLINOIS Son. FXPKHIMF.NT FIELDS IN 192S

221

TABI.I: lit. -HAKTSlU'lUl FIFL1): MAIN SF.KIK

Serial
plot
No.

10

Soil treatment

Series 100 Series 200 Series 300 S(

Second-vear First -rear

\YFST HALF

03 1

04 . \
tiO :>,
152.2

53 . 4

03.0

00 .2
04.2

55 . 2

57 . ( )
5S.4
04 .0

30. S
03.2

43.0

7S.O
79.4
S2.0

OS .S
.57 .2

72. S
OS .2
07 .0
ti9.4

H I.rPK, i£Yp-um
Rl.rP

400
Harlev1

35.4
44.2
50.0
50.0

42.7
47.5
53.3

40. it

55.6

45.8

40.0
IX 1
45. S
49.0

51 .it
51.2

54 . 2
47.it

54.2
42.9

Note. In li)24 the plots on these serie< were divided into west and oast halves
and additional investigations were benun. 'I'he plots on the west halves of all series
continue under the original soil treatment but the plots on the east halves receive
the treatment de-mnated above. No more rock pho-phate will be applied to the
phosphate plots on the west halves for an indefinite period, these plots having re-
ceived a total of s,00() pounds an acre. The same holds true for the east half of Plot
it on all series.

(hi the ea<t halves the pho<phatic fertilizers and tiypsum are applied twice in
the rotation, one-half ahead of the wheat crop and one-half ahead of the first corn
crop, a; the follov. nm annual acre rate-: rock pho-phate 500 pounds, superphosphate
200 pounds bone meal 2(10 pound-, jrypsum 200 pounds.

The minimum amount of limestone nece--ary to secure successful growth of
the legume catch crop will be applied to Plot- I-F and 10-K on all series, 4,000 pounds
an acre having 1 ieen applied in li*2 !.

!Harle\- \\-as jirown on Sene- 400 a.- a substitute for wheat.

HAHTSWK< i 1 II-:LD: SLKIKS 500

1..-.M 57.7

LoML. ... til .4
Le.MLrP. . OS.l
LeMrP. . . . til .7
0.. .47.7

222

BULLETIN* No. 327

[May,

TABLE 21.— JOLIET FIELD: MAIN SERIES

Serial
plot
No.

Soil
treatment

Series
100
Oats

Series
200
Alfalfa1

Series
300
Second-
year

Series
400
First-
year

Series
500
Wheat

Series
600
Mixed hay

corn

corn

1

0 .

. . . 57

3

( 0 )

26

8

19

3

2 5

(

97)

2

M

. . 59

4

( 0 )

32

6

46

3

8 7

(3

16)

3

ML

72

2

( 44)

51

o

59

9

12 2

(]

36 i

4

MLrP

72

5

(1 34)

52

v>

60

0

24 2

(2

19)

5

0

49

. /

( 0 )

19

6

17

9

6 7

(

96)

6

R

. . . 48

q

( 0 )

20

o

?3

6

8 4

(3

02)

7

RL ....

. . 63

4

( 04)

34

6

31

3

10 2

n

00)

8

RLrP

67

5

(1 60)

47

6

32

9

33 6

(3

63 )

9

RLrPK . . .

70

3

(2.53)

50

6

47

.7

40.0

<]

.92)

10

0

. . . . 54

2

( .88)

25

.6

20

.7

7.2

(

.93)

1 Alfalfa was badlv winterkilled.

TABLE 22.— JOLIET FIELD: MINOR SERIES

Serial
plot
No.1

Soil treatment

Series 700
Oats2

Series 800
Barley

Series 900
Corn

Series 1000
Legume
hay

1
2

3

4

5
6

7
8
9
10

11
12
13

L, red clover. . .

43

54
49
43

41

48
49
49
44
43

45
47
51

.1
.1

.7

.8

.6

.8
.4
.1
.7
.4

.6

.8
.3

23
28
34
26

29
30
32
34
35
29

.1
.5

.8
.5

.0
.6
.1
.6
.2
.2

43
57
62
55

48
54
57
57
43
50

54
55
51

.2
.4

.2
.8

.6

.8
.6
.0
.8
.0

.8
.4
.6

( 0 )
( 0 )
( 0 )
( 0 )

( .73)
ll. 60)
(1.36)
(1.50)

( .68)

( o )

LrP, red clover.

LrP, gypsum, red clover
L, red clover

L, alfalfa .

LrP, alfalfa

LrPL (8,000), alfalfa. . .
LrP, KC1, alfalfa
L, KC1, alfalfa
L, alfalfa .

L, red clover

LsP, red clover

LrP, red clover

Note. — In 1924 the rotation on the minor series at Joliet was changed to corn,
barley, wheat, and biennial legumes (red clover on Plots 1 to 4 on all series and on
Plots' 11, 12, and 13 on Series 700 and 900, alfalfa on Plots 5 to 10\ All plots had
received limestone at the rate of 5,000 pounds an acre prior to 1924. At that time
Plot 7 on all series received S,000 pounds of limestone an acre. Fertilizers as desig-
nated in Table 22 are applied at the following annual acre rates: rock phosphate
400 pounds, potassium chloride 100 pounds, gypsum 100 pounds. These fertilizers
are applied twice in the rotation, ahead of the wheat and corn crops. Superphos-
phate is applied for the wheat crop at the rate of 250 pounds an acre.

'Plots 11, 12, and 13 appear only on Series 700 and 900.

2Oats were grown on Series 700 as a substitute for wheat.

CHOI' YIKI.DS I-'KOM ILLINOIS SOIL KXPLKIMK.NT KIKLDS IN 192S

TABLE 23.- KKWANKK 1'IKLI): MAIN SKUIKS

Serial
plot
No.

1

Soil treatment

o

Series
100

Oats

f)f> 0

Series
200
Corn
(12 4

Series
300
Wheat
1!) <)

Sc^ries
400
Clover

(1 64)

•;>

M

79 1

7S 2

21.8

(1 .931

3

ML

75 3

!)1 ti

2(J 2

(2.30)

4

MLrP

79 1

04 ti

34 3

(2.tiSN)

,1

0 .

62.5

74.0

16.7

(1.17)

ti

R. . ....

til 4

74. G

17.0

( .59)

RI

. . C>7 3

S3. 6

23. S

(1 .01)

s

RLrP

Sti 2

29.6

(1.00)

9

RLrPK

7") 9

«)0 4

35 . 1

(1 .30)

10

0

65 0

.It) 0

16 7

( .43)

TAHI.K 24.-

KKWAXKI'

i FIKLD: MIXOII

SEHIES

Serial
plot
No.

Soil treatment

Series
500

Oats

Series
600
( 'orn

Series
700
Wheat

Series

soo

Clover

1

KrP.

S2 3

ss o

35 2

( 64 )

RsP

76 9

S") 0

33 2

( .50)

...

RLrP

(IS I!

9ti 1

27 0

( .49)

4

Serial
pin,

No.

1

RLsP

TAB LI; 2.1.

Sml treatment
(1

7S . S

I. A MOILL

Series
100
Oats

tit) (i

101 -.1

!•] KIKLI): MAIN

Series 200 Series .'

Seeond- l''irst
year year
enrn corn
lis 1 11 (]

40.0

SKKIKS

500 ^
When

•'4 0

( .58)

ries 100

Stubble

clover

(,s\v. el.)

M

7:; s

71.il 73. T)

32 ti

3
4

ti

s

MI
Ml.rl'

(i
K
HI.

itLiT

69.1
t).").l.»

55.S

ill .ti
tis.o
ti'.l 1

74. r> 7M.I1
(is.l 70. fi

."ii.i :»c,.i)

til .0 tiO.S

()">.!) (17.:;
11! 1.2 (')'.» 1

3S . 7
40.4

31 .S
35.1
1.1.2
13.5

(' .12,.
( 1 .ti!) !

(1 .77 i

i)

HLrl'K

ti!) 1

ti'.l 7 ti'.l S

40.0

(2.03

in

()....

:,:i o

54.1 17 ti

21 S

224

BULLETIN Xo. 327

[May,

TABLE 20.— LEBANON FIELD: MAIN SERIES

Serial
Plot Soil
No. treatment

Series
100

Soybeans

Series Series

300 Series

400

200 Stubble
Corn Wheat clover Wheat
(sw. cl.)

Stubble
clover
(hubam)

1 0. .

( .50)

17.6 2.8
27.0 4.6
37.4 24.1

.2
.6
9.5

( o )
( o )

(1.32)
(1.30)

( 0 )
( 0 )
(1.10)

(1.29)

(1.53)
( 0 )

2 M .

. . (1 16)

3 ML

. .. (1.52)

4 MLrP

. .. (2.38)

38.2 26.4

22.2 3.3
25.8 2.4
57.2 11.7
55.8 18.3

71.4 15.6
26.6 1.2

11.6

1.1

( 0 ) .9
(1.40) 10.3
(1.06) 12.8

(1.26) 12.2
.7

5 0

(2.16)

6 R

. .. (2.61)

7 EL ....

(2 25)

8 RLrP
9 RLrPK

. .. (2.68)
(2.61)

10 0

(2.18)

TABLE 27.— LEBANON FIELD: MINOR SERIES

Serial
plot Soil treatment
No.

Series
500
Corn

Series
600
Oats

Series
700

Oats1

1-W Le. . .

43.0

27.8

49.0
39.8

53.8
56.0

52.6
64.6

38.8
39.1

45.3
48.4

50.0
56.6

49.1
53 . 1

41.3
41.6

44.4
43.4

45.0
63 . 1

42.5
54.4

1-E LesP

2-W LeM.

2-E LeMsP

3-W LeML..

3-E LcMLsP. ..

4-W LeMLrP.

4-E LeMLrP...

'Oats were grown on Series 700 as a substitute for wheat.

(Sec opposite page for Table 28)

TABLE 29.— McNABB FIELD

Serial

plot

_No.

1
2

3

4
5

Soil treatment

R. .
RiT.

MiT
M..

Series
100

( 'oni

75.8

77.2
88.4
86.0
S4.2

Series

Series

Series

200

300

400

Clover

Wheat

Oats

(2.09i

38 . 3

75 . 6

(1.94)

42.0

S4.7

(2.93)

42.8

78.4

(3.34)

45.7

92.5

(3.11)

46 5

91 .3

CROP YIELDS FROM ILLINOIS Son. EXPERIMENT FIELDS IN 1928

TABLE 2,8,- LEBANON FIELD: MINOR SERIES

Scries

900
Potatoes

112.7
118.0
08.0
100.0
107.3

195.7
230.3
207.7
95.0
J02_7

Note.- In 1925 Scries 800 and 900 were laid out on land which had received
8,000 pounds of limestone, 2,000 pounds of rock phosphate, and 15 tons of manure
an acre in 1911. The land grew alfalfa almost continuously from 1911 to 1925. A
rotation of wheat (sweet-clover catch crop) and potatoes is planned. Fertilizers
are applied as indicated in Table 2S. The phosphates are supplied annually, rock
phosphate 400 pounds, superphosphate 200 pounds, treble superphosphate 100
pounds and potassium phosphate 200 pounds an acre. Kamit 200 pounds an acre
is applied tor each potato crop. Two tons ol manure an acre is applied for potatoes.
Straw is applied as a mulch when the potatoes are coining thru the ground.

TABLE ;{(). MTNONK FIELD

Soil t real ment

Seri

so
\Vh«

OS

0

;\«i1

LeM..

24

I.esl'

2t>

LeiT

2(5

()

Lesl'K

215

0

Lerl'K .

24

3

Le, st raw

17

Lesl' straw

19

()

Lerl', st raw
Le, treble superphosphate.

18
2t>

.7

Le, potassium phosphate

22

3

1,8.3

19.7

'The north halves of all plot.- of Scries MOO received nitrogen fertilizers as follows:
75 pounds ammonium -ulfaie per acre lull-dropped a! planting lime and 125 pounds
sodium nitrate per acre as a side dres-ing when the corn was about 12 inches high.
-I'.arly in March 2(11) pound- of sodium nit rate per acre was applied to t he nor! h halves
of all plots of Series 10(1 as a top dre-.-in^ for the wheat.

226 BULLETIN No. 327 [May,

TAHLF. 31— MT. MORRIS FIELD: MAIN SEHIES

Serial
plot
No.

Soil treatment

Series
100
Oats

Series
200
Corn

Series
300
Wheat

Series
400
Clover

1

0

48 4

30 0

13 2

( 0 )

2

M

63.8

58.8

16 0

( 0 }

3

ML

72.2

74 5

22.1

(2 . 26 i

4

MLrP.

71 3

71 9

23 7

(2 26 i

5

0

49 5

35 7

11 0

( 0 i

6

R

50 9

46 4

16 6

( 0 )

7

RL

66 4

04 7

27 5

( 56 )

8

RLrP

09 . 1

70 0

28.3

( .68)

9

RLrPK. .

76 6

71 1

33 . 1

(1.13)

10

0

49.4

45.3

7.7

( 0 )

TAHLE 32.— MT.

MORRIS TIK

LI): Mix OH

SERIES

Serial
plot
No.

Soil treatment

Series
500
Alfalfa

Series
600
Barley

Series
700
Corn

Series 800
Mixed
hay

1

0. .

( 0 )

32.3

57.0

(2.64)

2

M

( 0 )

36 7

72.2

(3.19)

3

ML

(1 SO)

47 1

79 4

(3.90)

4

MLrP

(2.38)

47.1

77.0

(3.8'.»

TABLE 33.— XI

<;\YTOX FIKL

1): MAIN SE

HIES

Serial
plot
No.

Soil treatment

Series

100
Corn

Series 200
Mixed
hay

Series 300
Spring

wheat

Series

400
( )ats

1

0. .

13 2

( .43)

.5

15.3

•)

M..

'•*5 2

( 50 )

8

28 . 8

>>

ML . .

49 0

(1 13)

14 3

40 0

4

MLrP

53 8

(1 95)

14 7

33 4

a

0

19 2

( 45 •

:>,

9 7

13

R . . . .

17.4

( .47 i

.5

14.1

8
9

HI
RL;l>

RLrPK.

29.6
34. 0

48 1

(1 .29;
( 1 .40 -

(2 00 i

7.2

0.7

17.7

37.8
37.8

36.3

10

0

13.0

( .50)

•_>

14.4

1929] CROP YIELDS FROM ILLINOIS Son, EXPERIMENT FIELDS ix 192S

1C i.~ ~* ?! M — -f >-C -rf 1C t^ CC — !T"5 ^

t^ i- >c ~ ~- c; 'C i- o t- i— i x ^o ^- o -;
an r- re r: re cc T*- x " 2 h

^ ^ ._ ,_. ^ ^ — . _^ .-. ~

BULLETIN No. 327

[May,

TABLE 35— NEWTON FIELD: MINOR SERIES

Serial
plot
No.

Soil treatment

Series 1100-N
Redtop

Seed II

ay

Series
1100-S

Oats1

Series
1200
Soybeans

1

2

3
4
5

LeLrP . .

4
3
3
3

4

.36
.66

.117
.68
34

(1.
(1.
(1.
( .
( .

34)
00)
12)
98)
96)

36.6

36.9
37.2
36.9
33.4

(2.02)
(1.68)
(1.80)

(1.90)

(2.18)

LeL

LeLrP

LeL

LeLrP

Note. — Prior to 1923 these series were used in plant-breeding projects and all
plots had received uniform soil treatment. From 1923 to 1926 wheat, soybeans, and
timothy were grown. In 1927 the rotation was changed to wheat (sweet clover),
soybeans, and redtop, the redtop to occupy a given series for three years while wheat
and soybeans are grown alternately on the other two series. The plan of fertilization
is as follows: Limestone in sufficient amounts to grow sweet clover. Rock phos-
phate: Plot 1 received an application sufficient to bring the phosphorus content of
the surface soil up to 2,000 pounds per acre by analysis. Plot 3 will receive phosphate
at the annual acre rate of 200 pounds (400 pounds applied for wheat and 600 pounds
for redtop). Plot 5 to receive phosphate at the annual acre rate of 400 pounds (SOO
pounds for wheat and 1,200 pounds for redtop).

J0ats were grown on Series 1100-S as a substitute for wheat.

(See opposite page for Table 36)
TABLE 37.— ODIN FIELD: MAIN SERIES

Serial
plot
No.

Soil treatment

Series
100
Oats1

Series
200
Sweet
clover

Series
300
Corn

Series
400
Soy-
beans

1

0 . .

7 8

0

2 0

15 2

2

R

13.4

0

4.3

16 6

3

RL

21.4

.01

9 8

30 1

4

RLbP

17 .'5

09

8 3

18 4

5

RLbPK

19 4

0

14 9

25 5

6

0 .

6 9

()

1 5

9 6

7

R. .

16 9

33

7 3

13 3

8

RL.

34 4

2 17

16 9

18 0

9

RLbP

42 0

62

14 4

17 7

10

RLbPK

35.8

1.55

25.5

30.2

'Oats were grown on Series 100 as a substitute for wheat.

TABLE 38.- ODIN FIELD: MIXOR SERIES

Serial
plot

No.

Soil treatment

Ljghl

Series
500
Corn

lime

Series
600
Oats1

Heavy

Scries
700
Corn

lime

Series

800

Oats'

1

LeLbPK

26 0

16 9

25 0

23 1

'2

LcLK

26 6

25 9

21 2

31 3

;>>

LeLsPK

20 0

12 8

19 2

24 7

4

LeLrPK

24 6

1C) 6

15 6

19 7

5

LeLK

23 . 4

28.4

25.2

25 . 9

6

LeL, slag P, K

27.8

25.3

17.2

17.8

1Oats were grown on Scries 600 and 800 as a substitute for wheat.

1929] CROP YIF.LDS FKOM ILLINOIS SOIL KXPEKIMFNT FIKI.DS IN 1928
TAHLK 30.— ( (BLONC, KIKLD: MAIN- SKHIKS

Serial
plot
No.

Soil treatment

Series

100

Oats

Series
200
Corn

Series

300
Oats1

Series
400
Mixed
hay

Surri! HALF

1

0 .

15.0

12.0

41 3

( .04)

o

M . . . . . .

40.0

20 4

40.0

(i .in

3

ML. . .

40 0

00 0

55.3

(2. OS)

4

MLrP

35 11

03 0

50 1)

(2 12)

5

0

11) 1

22 8

45 0

G

R

24 4

23 0

50 3

(1 .17)

RL

43.4

30.2

51 .3

(1 .71)

s

RLrP

43 S

40.0

.".3 . s

(2.23)

1)

RLrPK.

45 0

66.4

51 .0

(2.41)

10

0

20 :;

1 s 2

45.0

( .77)

NORTH HALF

1

RLsP..

17 5

220

50 9

(1.15)

• >

MLrP

27 0

42 0

02.8

(1.45)

3
4

MLbP
MLrP. . .

3 1 . 5
40 1)

02. S
5s li

50.0
07.2

(1.91)

(2.12,

5
ii

RL, underacidulated P. .
RLrP

Is.S
20 1)

21 0

35 s

5 1 . 1
00 1)

(1.45)
(T .21M

RLbP

40 0

10 s

54 7

(1.71)

s'

RLrP..

47.2

3s. 4

52.2

(2.00)

9 HLrPK 417 00.4 40.0 (2.23)

10 RL, pota--ium P 21 .U 32.0 50.0 (1.35)

Note. -Iii 11)25 these series were divided into north and smith halves for the
purpose of studying the relative values of different phosphorus earners. The plots
on the south halves ,,f all series, ;ts well as Plots 1, S, and ',* on the north halves con-
tinue under The original .-oil treatment.

t in the north halve- t he new soil t real n lent i< as follows: An initial application
of 4,0i)0 pounds df limestone an acre to Plots 1, 2, 5, 0, and 10; subsequent applica-
tions : i lie Mjiverned bv the clover requirements. Rock phosphate to Plots 2 and li;
LMIIII pounds an acre ahead of wheat and 0( Ml pound- ahead of corn. Bone meal
to Plots 3 and 7; 500 pounds an acre ahead of wheat and 301) pounds ahead of corn.
Superphosphate to Plot 1; undera'-idulated phosphate to Plot 5, and potassium
phosphate to Plot 10; all in t he -a me amount s and applied for t he same crops as t he
bone meal. Re-idues to be turned under on Plots I, 5, and 10 as on the original
residue plots.

'iiaTs weiv Mi-own on Series 3DO as a substitute for wheat.

17

230

BULLETIN No. 327

May,

TABLE 40.— OQUAWKA FIELD

Serial
plot
No.

Soil treatment

Series
100
Sweet
clover

Series
200
Alfalfa1

Series
300
Rye

Series
400
Soy-
beans

Series
500
Corn

Series
600
Wheat

1

0

0

(1.78)

11.2

11.6

13.0

8.3

o

M

0

(4.14)

13.3

19.7

36.0

10.7

3

ML

. 1.80

(4.35)

18.8

25 2

68.4

21.8

4

MLrP

. 1.37

(4.38)

19 5

23 8

63 6

22 3

5

0. .

0

(3.92)

11.6

13.4

8.8

5.3

6

R

0

(4.00)

13.4

14.2

21.8

1.8

7

RL

.73

(4.20)

13.8

18.6

71.2

13.2

8

RLrP

. 1.25

(4 39)

14 5

20 7

71 4

13 5

9

RLrPK

. 1 18

(4 42')

14 5

27 1

61 8

15. S

10

0

0

(3.15)

8.8

15.4

28.0

1.3

1 After the first crop of alfalfa had been removed, rock phosphate was applied as
a top dressing for the alfalfa, 500 pounds per acre to Plots 4, 8, 9 and 1,000 pounds
per acre to Plot 10.

TABLE 41.— PALESTINE FIELD: MAIN SERIES

Serial
plot
No.

Series
Soil treatment 100
Sweet
clover

Series
200
Oats

Series
300
Corn

Series Series
400 500
Spring Alfalfa
wheat

1

•;

3

4

5

6
7
8

9

10

LeL. .

. . .87

19
21
23
25

23

18
19
23

22

11

.4
.3
.1

.6

.1
.1

2

.4

.5

0

26
34
25
26

26
26
25

27

26
19

.0

.(i
.8
.6

.4

.8

.s

2

.4
.0

8
13
15

16

13
13
13
16

18
6

.5
.3
.0
. i

.0

'.()
.3

.3
3

('3.67 .
(4.06)
(4.08)

(3.83;

(4.27)
( 4 . 20
(3. 83.)
(4.21

(4.67)

1.3.14)

LeLM
LeLMs
LeLMr

LeL. .

48

P. .

38

P

48

58

LeL, K
LeLsP,

LeLrP,

LeLrP,
0

Cl.

.70

KC1 . . .

1 17

KC'l. .

97

kainit .

1 17

10

Note. — In 1928 the rotation was changed to wheat (standard mixture catch
crop), corn 'hairy vetch seeded at last cultivation), oats, red clover-alfalfa mixture,
and alfalfa. KC1 is applied at the rate of 250 pounds per acre for the corn crop;
kainit, at the rate of .")00 pounds per acre for wheat and 500 pounds for corn; super-
phosphate, at the rate of 300 pounds per acre for wheat, 300 pounds for oats, and 150
pounds for corn; rock phosphate, at the rale of 600 pounds per acre for wheat, 600
pounds for oats, and 300 pounds for corn. Limestone has been applied in sufficient
amounts to grow clovers and subsequent applications will be governed by the re-
quirement of the legume crops. Plots 2, 3, 4 will receive manure in amounts equiva-
lent to the crops removed from Plot 2 of all series, applied for corn.

1929}

('nor YIKI.PS FKOM II.UNOIS SOIL KXPKRIMKNT FIKLPS IN

Serial
plot
No.

TABI.K 42- PALESTINE FIELD: MINOR SKIUKS

Soil treatment

LeLsP .
LeLrP .

LeL

LcL, flowers of sulfur . .
LcLrP, flowers of Milfur.

LeL

LeL, gypsum

LeLrP, gypsum

Series

Series

Series

600

700

800

Alfalfa

( 'orn

Spring
wheat

2.96)

15.9

2.1

i 3 . S6

17. S

1.6

(3.18)

19.1

2.1

(1.46)

20.9

1.6

(2 .16)

21 .6

3.4

(2.51)

17.4

4.3

(2.46)

21.8

5.3

(2..™

21 .9

2 . 9

Note.- These series were laid out in the fall of 1925. A rotation of wheat
(sweet clover1, corn, and alfalfa is grown, wheat and corn alternating on two series
for three years, while alfalfa occupies the third series for the same period. The
following plan of soil treatment was adopted: An initial application of 6,000 pounds
of limestone an acre, future applications 1o be governed by the crop needs. Rock
phosphate, 600 pounds an acre for wheat, 300 pounds for corn, and 600 pounds
for the second crop of alfalfa. Superphosphate, 300 pounds an acre for wheat, 150
pound- fur com, and 300 pounds for the second crop of alfalfa. Mowers of sulfur,
50 pounds an acre for wheat and 50 pounds for the second crop of alfalfa. Gypsum,
300 pound- an acre for wheat and 300 pounds for the second crop of alfalfa.

PALESTINE El ELI): SKKIKS 900

it men; ( 'urn

Plot

No.

Soil treatment

Corn

S 1

5

LerP (400V

... 6.7

9 :;

6

Lei

10 3

ti 4

LeL<P ( 100

10 6

f> . 3

S

LeLsP (200 . .

91

iment was planned to study the effects of vetch green manure
•rop. Temporarily a single crop system is planned. Corn
iry vetch will be grown. The vetch will be seeded in the corn
uro\\th plowed under the following spring.
on of (1,000 pounds of limestone per acre was made on Plots
r i- applied to Plots 2 and 7 at the rate of 100 pounds, and to
of 200 pounds per acre per year. Hock phosphate is applied
annual acre rate< of 200 and 400 pounds respectively.

232

I5ui.LF.Tix Xo. -327

[May,

TABLE 44.— RALEIGH FIELD

Serial
plot
No.

Soil treatment

Series
100
Oats

Scries
200
Corn

Series
300
Oats1

Series
400
Timothy-
hubam

WEST HALF

1

0..

24.1

6

8 1

( 0 )

2

M

31 9

3 2

22 2

( 0 )

3

ML. ...

45 9

40 8

44 4

(2 00)

4

MLrP...

40 9

38 0

42 2

(2 11)

5

0..

31.3

6

10 3

( 0 )

6

R

25 9

4 0

11 6

( 0 )

7

RL

37 5

34 2

28 4

( 24)

8

RLrP

41 3

40 6

33 1

( 38)

9

RLrPK .

42 2

40 2

39 1

(1 40)

10

0

21 3

3 6

18 8

( 0 )

EAST HALF

1

RL. .

21 0

3 4

23 4

( 80)

2

MrP

33.4

.1

34 4

( 0 i

3

MLbP

48 8

35 2

50 3

(1.98)

4

MLrP

49 7

40 0

53 8

(2 63)

5

RsP. .

13 8

0

21 9

( 0 )

6

RrP .

16 6

0

31 3

c o )

7

RLsP

33 8

41 2

40 0

( 39 )

8

RLrP

42 5

44 6

43 8

( .39)

9
10

RLrPK, gypsum
RLrP. . .

39 . 1
21.6

49.8
29.2

38 . 1
41.9

(2.63)
(1.02)

Xote. — Tn 1924 the plots on these series were divided into west and east halves
and additional investigations were begun. 'The plots on the west halves of all series
continue under the original soil treatment, hut the plots on the east halves receive
the treatment indicated above.

Xo more rock phosphate will be applied to the phosphate plots on the west
halves for an indefinite period, these plots having received a total of 8,500 pounds
an acre. The same holds true for the east half of Plot 9 of all series.

On the cast halves the phosphafic ferlili/crs and gypsum are applied twice in
the rotation, one-half the rotation quota ahead of wheat and one-half ahead of corn
at the following annual acre rates: rock phosphate 500 pounds, superphosphate
200 pounds, bone meal 200 pounds, gypsum 200 pounds.

The minimum amount of limestone necessary to the successful growth of clovers
will be applied to Plots 1-E and 10-K of all series, 4,000 pounds an acre having been
applied in 1921 and 2,000 pounds in 1927.

M )ats were gro\vn on Series 300 as a subsf it ute for wheat.

10S9\

CROP YIELDS FROM ILLINOIS SOIL KXTKIU. \IK\T FIKLDS i\" 192S

TABI.K Jo. SIDFLL FIFLP

Serial

Series

Series

Series

Series

Series

plot

Soil treat incut

100

200

300

400

500

No.

( 'orn1

Alfalfa2

( 'orn '

( 'lover

Oats

1

I)

-17 S

( . 62 i

23 . 9

(2 . 34 }

62 . 2

• >

M . . . .

39 . 1

( .73'

20.0

(2.431

72.0

',)

ML .

46 0

( . SS i

31 .5

(2.07 )

64 . S

4

MI iT

."if) 1

( 1 .01 )

30.3

(2 24 ^

71 .6

5

0. .

. .. -23.7

( .70)

12 1

i_ fcj . *_ i

( 1 . 76 }

of) . 6

(I

H.

. 2S 3

( .56 '

12.7

(1 .So i

60 o

RL . ...

. 36 3

( . SS )

23 . 1

(1 .SO)

57.2

s

HLrP

37 o

C l . 1 1 )

26.0

(2.21 i

5S . 1

9

HLrPK

-1 \ S

(I .131

31 S

(2 06 >

64 1

10

0. .

20.4

( .S2)

14. S

(1.631

56.3

'Series 100 and 300 were planted to different varieties of corn about the middle
of June in a study of Corn-borer control. Yields given are the averages of five var-
ieties '-'Only cine crop of alfalfa removed.

TABI.K 46. SPARTA FIKLJ): MAIN SKRIKS

Serial

Series

Series

Series

Series

plot

Soil treatment

100

200

300

400

No.

( 'orn

Sweet

Oats1

Soy-

clover

beans

1

0

11 0

0

24 4

( 43)

2

M

14.6

0

21.9

( .60)

3

ML

36 S

3.25

39.1

( .97)

4

MLrP

31 2

1 .92

40 0

(1.18)

ft

0

11 6

0

S 1

( .50)

6

R .

12 2

0

16 '.}

( 50 )

RL .

3o.O

2 1 2

34.4

( .88)

S

RLiT

33.4

1 .62

32 5

( .91)

'1

HLrPK. .

3S.O

4 .03

34.7

(1.09)

10

0 .

is 4

0

15.0

( .17)

'Oats \verc pro\vn on Series 300 as a

Serial

plot
No.

1

Soil t re
0

ntnionl

M

3

ML.

4

MLrP

0

MLrPK

6

0. .

Scries

Series

Series

Series

5( H 1

600

700

SOO

( 'orn

( 'owpcas

Soybeans'

Oats5

1 3 . 2

a .36

(1 .37)

13. S

26.0

(1 .60 i

(i .SO)

30.0

67 .0

Cl .72)

(1 .S9.

4S.S

63.6

a ,5Si

(1 .99)

62 5

65 . S

(1.38)

(1.74 ,

62 5

10.6

( .SO)

( .72)

35 6

'Soybeans were grown on Scries 700 as a substitute for timothy,
grown on Series SOO as a substitute for wheat.

-Oats were

234

BULLETIN' Xo. 327

[A/ay,

TABLE 48.— SPARTA FIELD: Mi.voit .SKRIK s

Soil

Plot A

Plot B Plot C Plot D Plot E Plot F

treatment

Wheat

Com Alfalfa Alfalfa Soybeans Cowpeas Sov-

Virginia Laredo beans

MLrPK. .

10.7

25.2 (1.81) (1.14)

MrPK

0

2 8 ( .98) ( 32)

LeL

(1.14) (1.37) (1.26) (1.50)

TABLE 49.— SPRING VALLEY FIELD: MAIN SERIES

Serial
plot
No.

Soil treatment

Series
100
Oats

Series
200
Corn

Series
300
Wheat

Series
400
Soybeans1

1

0 .

19 4

43 6

39 2

(1 83)

2

M

30 0

58 8

45 2

(2 47)

3

ML

48.8

64.2

45.8

(2 55)

4

MLrP

48.1

69.8

49 0

(2 50)

5

0 .

28 8

32 4

42 7

(2 27)

6

R

44 1

50 2

44 7

(2 28 "1

7

RL ...

51 3

57 8

4(5 5

(2 20)

8

RL'-P

43 8

55 0

44 8

(2 14)

9

RLrPK

57.8

00 8

48.5

(2 19)

10

0

43.8

35.0

38.2

(2.28)

'Soybeans were grown on Series 400 as a substitute for wheat.

TABLE 50.— SPUING VALLEY FIELD: Mi.vou SERIES

Serial
plot
No.

Soil treatment

Series
500
Oafs

Series

000
Soybeans1

Series 700
First-year
corn

Series 800
Second-year
corn

1
2
3

4

0

47 . 5
01 .3
00.0
50.0

Series tiOO

(2.88)

(2.82)
(2.82)
(2.73)

47.0
62.6

05.4

70.4

09.0
78.4
74.0
73.4

KM

RML

RMLrP. .

Soybeans were grown on

as a substitute

for alfalfa.

9

10

('nor Ytr.i.ns I-'KOM II.I.INOIS Son. KXPKKIMKXT KIKI.DS IN 192S

TABU: 51.— TOLKUO FIELD: M.viv SKUII-

.Soil treatment

Series
100

Oats

Series
200
Corn

Scries
300
Spring
wheat

Series
400
Mixed
hay

SOUTH HALF

1) . . . .

20 0

:W 4

3 2

( .43)

LeM .

2! 7

40 0

4 S

C 54 )

LeML

u 3

til 0

S 5

(2 02)

LeMLrP

OS 4

til) 0

',) 5

(1 98)

0 .

17 5

21 0

2.7

( .52)

R . .

2*- i

2f> 0

2 3

( .f>7)

RL

•14 7

30 ti

7 S

(1 74)

RLrP . .

41 3

31 f>

0 0

(1 87)

RLrPK

oo S

47 0

17 3

(2 33)

0

19.7

20.2

1.3

( .43)

NORTH HALF

RL

•20 3

37 4

f> 2

( . S8 1

LeMrP. . . .

19 1

43 f>

9.7

( .81 )

LeMLbP

30 o

57 0

!t o

<2 02 .

LeMLrP

34 i

54 S

11 0

(2 15)

Rs?

- •>

Iti 2

( 50 }

RrP

11 9

24 0

5.2

i .f»5)

RLsP. . .

as s

37 S

N 0

(1 .til;

RLrP.

of) 9

33 s

7 5

(1.84)

RI.rPK, gvpsum
RLrP.. . .'

37.2

r.» i

5S.4

o2.ti

20.2

7.S

(2.33)
(2.36)

9

10

Nnte.--Iii T.I21 tlie ]>lots on these >cries were divided into north and south
halves and additional studies were l>e<iun. The plots on the south halves of the
series continue under the original soil treatment hut the plots on the north halves
receive the soil treatment de<ijrnated ul>ove. No more rock phosphate will be ap-
plied to the phosphate plots on tin1 ,-outh halves for an indefinite period, these plots
having received a total of S,000 pounds. The same holds true of the north half of
Plot (.l of all series. Both halve- of Plots 2, ."., and 1 will receive the sweet-clover
catch crop in the same manner a- the residue plots.

O\\ the north halves the pho-phatic fertili/ers and gypsum are applied twice
in the rotation, one-half of the rotation quota ahead of corn and one-half ahead of
wheat at the following annual a'-re rate.-: rock phosphate 500 pounds, superphos-
phate 200 pounds, bom- meal 200 pounds, nypsuni 200 pounds.

The minimum amount of limestone necosary to the successful growth of clovers
will be applied to Plots 1-N and 10-N, 1,000 pounds having been applied in l'.»24.

BULLETIN No. 327

[May,

TABLE 52— UNIONVILLE FIELD: MAIN SERIES

Serial
plot
No.

Soil treatment

Series

100
Cotton1

Series
200
Corn

Series

300

Wheat

Series

400

Soybeans

WEST HALF

1 0 0 1.3 (1.36;

2 M 1.0 1.3 (2.03;

3 ML 6.4 4.3 (2.34;

4 MLrP 5.4 5.5 (2.34)

5 0 0 1.0 (1.61)

6 R 0 .5 d.42j

7 RL 20.0 5.7 (1.47)

8 RLrP 24.0 10.3 (1.42)

9 RLrPK... 30.2 10.0 (1.94)
10 0 0 1.7 (1.40)

EAST HALF __

1 L 1.6 3.3 (1.21)

2 MLrP 4.0 4.3 (1.32)

3 ML, KC1 5.6 6.3 (1.61)

4 MLrP, KC1 7.0 8.8 (1.67)

5 LsP .6 5.S (1.11)

6 L, NaNO3 .8 6.7 (1.32)

7 RLsP, KC1 18.0 10.2 (1.65)

S RLrP,KCl 22.4 10.8 (1.72)

9 RLrP, kainit 33.6 10.3 (1.90)

10 LsP, NaNO3 7.6 6.5 (1.30)

Note. — In 1925 these series were divided into west and east halves and new
investigations were begun. All plots on the west halves and Plot 9 on the east
halves of all series will continue under the original soil treatment; but the plots on
the east halves, with the exception of Plot 9, receive the treatment indicated above.
No more rock phosphate will be applied to any of the original phosphate plots for
an indefinite period, these plots having received a total of 8,000 pounds an acre.

The soil treatment on the east halves is as follows: Limestone to Plots 1, 2, 5,
6, 10 at the rate of 4,000 pounds an acre; subsequent applications to be governed
by the requirement of the legume crops. Rock phosphate to Plot 2; 400 pounds an
acre for wheat, 500 pounds for cotton, and 300 pounds for corn. Superphosphate,
200 pounds for wheat, 250 pounds for cotton, and 150 pounds for corn. KC1, 150
pounds for cotton and 150 pounds for corn. NaNOj, 200 pounds for cotton. No
more residues to Plot 6.

'Crop failure.

CROP YIELDS I-'KOM ILLINOIS Son. KXPKRIMKNT FIELDS IN* 1928

TABLE 53.— UNION VILLE FIKLD: MI.VOH SKKIKS

Serial

Series

Series

Series

plot

Soil treatment

500

700

800

No.

Wheat

Cowpeas

Timothy

1

o

1 S

( 50 )

( 33)

• >

MLrP

10 ti

fl 17 i

(2 23)

3

KLrP

13 1

(1 07 )

(1 67)

4

RLrP

kuinit

It) 4

ci 15)

(1 37)

5

RLrP,

shale. . . .

12 2

( 97)

(1 74)

ti

RLrP

common salt

15 0

( 1 00 )

(1 55)

RLrP,

( hnaha K

12. S

( .99)

(1.62)

s

0

3.4

( .57)

( .76)

Note. — Due to severe washing and non-uniformity of soil, Series 000 has been
dropped from this experiment. A three-erop system will be practiced on Series 500,
700, and SOO. Wheat (sweet-clover catch crop ; and cowpeas will alternate on two
series for three years while a mixture of red clover and timothy will occupy the third
series.

TABLE 54,-CRBANA, DAYKXPORT PLOTS

Serial
plot Soil treatment
No.

Series
100
Barley1

Scries
200
Oats

Series
300
Soy-
beans2

Series
400
Alfalfa

Series
500
Corn

WEST HALF

1 0

47 1

03 1

23 1

( 83)

49 6

2 R
3 M
4 HI

50.0
48.7
. . . 4* 7

64.2

76 9
5s 1

23.3

26.0

• >- •>

( .54)

( .49)
(1.10)

50.8
63.6
60.0

:> ML . .

48 3

75 0

•'9 4

(1 40)

74 4

ti RLiT. . .

. 50 0

73 s

31 6

a 79 'i

73.6

7 MLrP. .

:>•' i

M 4

36 ti

(3 44)

77 6

s KLrPK....,

9 MLrl'K . . .
Id M'LrP*. .

4S.7
50.0
55.0

76.2
76.2
76.2

38.0
39.5
36.7

(3.69)
(3.50)
(2.75)

81.2

75.2

78 S

KAST HALF

10

39 2

60 ti

22 4

(1.11)

53 . ti

2 i;

. . 4'' 5

08 1

•)•> •)

( .84)

47.2

:; M

. 47 '.»

siM)

26 0

( -63)

61 2

i 1:1,

5 ML

47.1
. 49 2

t',5.0
80 ()

27.3

28 4

(1.28)

(1 20)

57 6
70.4

• i IM.I.l'

. 49 2

75 0

32 7

(2 49)

74.0

7 MLbP

54 2

s2 5

37 s

(3 23 i

72.8

S KI.M'K

51 7

75 0

40 0

(3 76 )

74., 8

9 MLbPK. . . .

50 S

76 2

38 2

(3 68 i

67.2

10 M'LM-1

52 . 1

70. ti

3ti,ti

(2.80)

72.4

es loo as a substitute for wheat. ^Soybeans were grown
for clover.

238

BULLETIN No. 327

TABLE 55.— URBAXA, MORROW PLOTS

Section

.

Plot 3

Plot 4

Plot 5

of
plot

Soil treatment

(Continuous
corn )
Corn

(Corn and oats
rotation)
Oats

(Corn, oats, and
clover rotation )
Corn

NW

0..'

15.6

34.4

40.8

sw

MLrP

32 X

73.1

74.4

NE

0 .

22.0

34.4

47 6

SE

MLbP

32.0

70.6

70.4

TABLE 50.— WEST SALEM FIELD: MAIN- SERIES

Serial
plot
No.

Soil
treatment

Series Series5

300 400

Soybeans Corn

Series2

500
Spring
wheat

1 0 ( 0 )

2 ML1 ( .51 )

3 ML (1.24)

4 MLrP (2.01)

5 L1. . .

6 RL1.

7 RL. .

8 RLrP

( .35)
( .41)
(1.04)
(1.60)

9 RLrPK (1.98)

10 0 (0 )

42.0
6.9

'Initial application of limestone only. -Series 400 and 500 contain only 9 plots
each.

TAHJ.K 57.— WEST SALEM FIKLD: MINOR SERIES

Soil

Plot A

Plot P,

Plot C

Plot 1)

Plot E

Plot F

Ircatmenl

Mixed
hay

Sweet
clover

Spring

wheat

Mixed
hay

Corn

Spring
Wheat

MLrPK. .

. (2.84)

.39

Is "

(2.29

36.2

10.2

MrPK..

( 0 ')

0

5.3

{ .12)

16.0

3.4

FFR ,

IU//Vft'S

UNIVERSITY OF ILLINOIS-URBANA