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EXPERIMENT STATION LIBRARY

INSPECTION OF COMMERCIAL
FERTILIZERS

MADE FOR THE
STATE DEPARTMENT OF AGRICULTURE

The inspection of commercial fertilizers reported in this
bulletin was made under the direction of the Honorable
Andrew L. Felker, Commissioner of Agriculture. The
state inspector, Mr. Eugene D. Sanborn, collected samples
of 127 brands of fertilizer materials which were offered for
sale by dealers or had been delivered to consumers during
the year ending June, 1931. The general character of the
fertilizer materials collected is shown by the following classi-
fication :

Complete fertilizer 103

Nitrogen and superphosphate 1

Superphosphate (acid phosphate) .... 6

Nitrate of Soda -..- 1

Calcium nitrate 1

Sulphate of ammonia 2

Ground bone ..- .-. 5

Tankage 2

Natural manures 6

127

THE FERTILIZER LAW

The New Hampshire fertilizer law applies to all fertilizer
materials offered for sale, whether mixed materials in the
form of complete fertilizers or unmixed materials as super-
phosphate (acid phosphate), nitrate of soda, ground bone,
tankage, etc. Under the provisions of the law every manu-

2 N. H. AGR. EXPERIMENT STATION [Bulletin 263

facturer or dealer who shall sell or offer for sale any fertilizei
material shall furnish with each lot or package a clearly
printed statement certifying the brand name under which
it is sold, the name and address of the manufacturer, the
number of net pounds the package contains and a chemical
analysis stating the minimum percentages of nitrogen, of
total phosphoric acid, of available phosphoric acid and of
water soluble potash. No person shall sell or offer for sale
any pulverized leather, hair or wool waste, peat, garbage
tankage, or any inert material whatsoever, without an ex-
plicit printed statement of the fact conspicuously fixed to
every package of such material. The state official in
charge of the administration of the fertilizer law^ is the
Commissioner of Agriculture.

During the past year five conferences have been held
by officials charged wath the enforcement of the fertilizer
laws, agronomists and manufacturers. They have agreed
to cooperate in the territory represented by the six New
England States, New York, New Jersey, Pennsylvania,
Delaware, Maryland, and West Virginia in enforcing the
following changes :

1. When fertilizers are registered with the state
fertilizer control official the guaranty shall be stated
in terms of nitrogen and not in terms of ammonia.

2. Grades or analyses of mixed fertilizers shall be
expressed in whole units and not in fractions or
decimals.

3. Trade or brand names shall include the numerals
giving the minimum percentage of each plant food
in the order — nitrogen, available phosphoric acid,
and potash.

In Table I are given the grades of complete fertilizers
collected, the number of brands found in each grade, the
average analysis of each grade and the average retail price
per ton.

Dec, 1931] FERTILIZER INSPECTION, 1931

TABLE I

O

a
a
o

u

0) o

per cent
Is phos-
acid

a

P.O

>- a)

Formula

P

he Ml

22

a, &
M

S'cB'O

•<

ca.-S t<

^1 03 O

> c8 P.
<<

to
S So

0.82—9—4

1

1.08

9.65

8.88

4.06

$32.00

0.82 — 10 — 3

1

1.09

12.50

10.96

3.22

38.00

1.64 — 8 — 2

3

1.93

9.46

8.60

2.25

42.33

1.64 — 8 — 10

1

1.77

9.18

8.55

9.72

1.64 — 9 — 3

2

1.75

10.34

9.62

3.08

■ 4 4. 6 6

1.64 — 10 — 2

5

1.93

11.28

10.28

2.20

36.20

1.64 — 10 — 4

1

2.04

11.76

10.02

4.16

43.00

1.64 — 12 — 4

3

2.00

13.40

12.27

4.16

37.67

2.47—8—4

9

2.69

9.31

8.55

4.14

40.44

2.46 — 8 — 10

1

2.80

10.39

8.25

10.26

52.00

2.46 — 10 — 4

1

2.52

11.84

11.01

4.00

50.00

2.46 — 10 — 6

o

2,66

11.59

10.80

6.06

38.50

2.46 — 12 — 4

1

2.60

13.32

12.29

4.08

40.00

3.29—6—10

12

3.34

7.19

6.59

9.74

43.51

3.29 — 8 — 4

10

3.43

9.27

8.55

4.11

41.10

3.29 — 8 — 10

1

3.45

9.29

8.58

10.01

44.00

3.29 — 10 — 4

1

3.56

11.98

10.42

4.06

48.00

4—8—8

1

4.00

9.11

8.00

7.70

4 — 10 — 6

1

4.44

10.55

9.31

6.41

" 4 5. 6 6

4 — 12 — 4

1

4.00

13.79

11.67

4.00

120.00

4.11 — 7 — 10

o

4.19

8.56

7.93

9.74

60.00

4.11 — 8—7

16

6.01

9.40

8.53

6.93

48.44

4.11 — 10 — .5

1

4.29

10.82

10.00

5.00

45.00

4.11 — 13 — 4

1

4.00

15.54

13.11

4.14

100.00

4.93—6 — 4

1

4.94

7.71

7.09

4.04

50.00

4.93—8—7

1

5.02

9.52

8.79

7.02

47.00

4.93—8—10

1

5.23

11.71

8.84

10.68

5—10—4

1

5.18

12.11

10.92

4.00

'120.66

5.76—6—5

4

5.70

7.29

6.78

4.98

51.75

5.76—8—5

1

5.64

9.18

8.87

5.11

43.00

5.76—8 — 6

1

5.81

9.56

8.91

6.45

67.00

5.76 — 11 — 10

1

5.86

12.03

11.18

10.00

6.58—6—6

2

6.81

7.20

6.35

6.25

' 47.56

6.58 — 8 — 4

1

6.67

9.35

8.36

4.21

85.00

6.58—13—11

2

6.64

14.08

13.58

11.42

56.00

8—16—16

1

7.70

17.06

16.38

16.98

8.22 — 3 — 8

1

8.71

9.36

5.80

8.73

' 76.66

8.22—3.50—8

1

8.80

4.45

4.31

8.39

78.00

8.22 — 6 — 6

1

8.03

7.23

6.87

6.00

51.00

8.22 — 16 — 14

3

7.65

16.80

16.07

13.41

80.00

9 — 18 — 18

1

8.75

20.40

18.78

19.61

12—24—12

1

12.94

27.55

26.90

9.64

■ 8 5'. 6 6

CONFORMITY TO GUARANTEE

Forty-seven of the 127 brands analyzed were found to
contain less than the guarantee of one or more of the three
constituents. The total number of guarantees on the 127
brands was 462, the total number of deficiencies 54, the

4 N. II. AGR. EXPERIMENT STATION [Bulletin 263

per cent of the guarantees deficient 11.7. In the last
year's inspection this figure was 13.0 per cent. The pre-
vious year it was 12.3 per cent. ]\Iany of the deficiencies
were comparatively negligible, the small deficiency in
one constituent being offset in value by overrun in otlier
constituents.

A detailed summary of the deficiencies in the 47 brands
which failed to meet the guarantees follows :

Number

of Total

Brands Deficiencies

Nitrogen, total phosphoric acid, available

phosphoric acid and potash 1 4

Nitrogen, total phosphoric acid and

potash 0 0

Nitrogen, available phosphoric acid and

potash 0 0

Nitrogen, total phosphoric acid and avail-
able phosphoric acid

Nitrogen and total phosphoric acid

Nitrogen and available phosphoric acid....

Nitrogen and potash

Nitrogen

Total phosphoric acid, available phos-
phoric acid and potash

Total phosphoric acid and potash

Available phosphoric acid and potash

Potash

Total phosphoric acid and available
phosphoric acid

Total phosphoric acid

Available phosphoric acid

47 54

NITROGEN DEFICIENCIES

One hundred twenty-one l)rands were guai-anteed to
contain nitrogen in amounts varying from 0.82 per cent

0

0

0

0

0

0

4

8

15

15

0

0

0

0

0

0

20

20

0

0

1

1

6

6

Dec, 1931] FERTILIZER INSPECTION, 1931 5

to 20.56 per cent. Twenty brands failed to meet the guar-
antee. Fourteen of these brands were deficient one-
fourth per cent or less, the equivalent of 5 lbs. or less of
nitrogen per ton. The amounts of the other deficiencies
expressed as pounds per ton are as follows : 5.8 lbs., 5.8
lbs., 6.0 lbs., 6.0 lbs., 7.4 lbs., 24.2 lbs. The greatest de-
ficiency, 24.2 lbs., is equivalent to approximately $2.50
per ton, assuming the nitrogen present in the inorganic
form.

PHOSPHORIC ACID DEFICIENCIES

One hundred five brands were guaranteed to contain
phosphoric acid. Eight brands failed to meet the guaran-
tees. One was deficient in total phosphoric acid, six in
available phosphoric acid and one in both total and,
available phosphoric acid. Only one of these deficiencies
would amount to as much as $1.00 per ton,

POTASH DEFICIENCIES

One hundred nine samples were guaranteed to contain
potash. Twenty-five failed to meet the guarantee. Only
two of these deficiencies, however, would amount to as
much as $1.00 per ton.

In the tabulation of the analyses in the following pages
deficiences of two-tenths of one per cent or more are
shown in italics. The names of the manufacturers are
arranged alphabetically, and under the manufacturer the
different brands are arranged alphabetically or numer-
ically by formula.

N. H, AGR. EXPERIMENT STATION [Bulletin 263

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