Table 1. Nutrient Content of Natural Materials.
| Materials |
% N |
% P |
% K |
| Ashes,
unleached |
0 |
2.0 |
6.0 |
| Ashes,
leached |
0 |
1.2 |
2.0 |
| Blood (dried) |
12 to 15 |
3 |
0.6 |
| Bone meal,
raw |
3.5 |
22 |
- |
| Bone meal,
steamed |
2.2 |
28 |
0.2 |
| Coffee
grounds |
2.1 |
0.3 |
0.3 |
| Compost |
0.3 |
0.2 |
0.4 |
| Cottonseed
meal |
6 to 7 |
2.5 |
1.5 |
| Greensand |
- |
1 to 2 |
5.0 |
| Hair |
12 to 16 |
- |
- |
| Kelp or
seaweed |
1.5 |
1.0 |
4.9 |
| Lawn clippings |
1.2 |
0.3 |
2.0 |
| Peanut
hull meal |
1.2 |
0.5 |
0.8 |
| Oyster
shells |
0.2 |
0.3 |
0.03 |
| Sawdust,
wood shavings |
0.2 |
- |
0.2 |
| Sewage
sludge |
2.6 |
3.7 |
0.2 |
| Sewage
sludge, activated |
6.0 |
3.0 |
0.2 |
Table 2. Nutrient Content of Manures.
| Manures |
% Nitrogen |
% Phosphate |
% Potash |
| Bat |
6.0 |
9.0 |
3.0 |
| Beef (fresh) |
0.6 |
0.4 |
0.5 |
| Beef (dry) |
1.2 |
2.0 |
2.1 |
| Chicken (fresh) |
0.9 |
0.5 |
0.5 |
| Chicken (dry) |
1.6 |
1.8 |
2.0 |
| Hog (fresh) |
0.6 |
0.3 |
0.4 |
| Hog (dry) |
2.2 |
2.1 |
1.0 |
| Horse (fresh) |
0.6 |
0.3 |
0.5 |
| Rabbit (fresh) |
2.4 |
1.4 |
0.6 |
| Turkey (fresh) |
1.3 |
0.7 |
0.5 |
Table 3. Recommended application rate for various granular fertilizers
to apply 1 pound of nitrogen per 1,000, 100, and 10 square feet.
| Application rates
per |
1,000
Square Feet
|
100
Square Feet
|
10
Square Feet
|
| Source |
Pounds |
Cups |
Pounds |
Cups |
Tablespoons |
| 10-10-10 |
10 |
20 |
1 |
2 |
4 |
| 8-8-8 |
12.5 |
25 |
1.2 |
2.5 |
5 |
| 12-4-8 |
8 |
16 |
.75 |
1.5 |
3 |
| 16-4-8 |
6 |
12 |
.5 |
1 |
2 |
| 5-10-10 |
20 |
40 |
2 |
4 |
8 |
| 12-6-6 |
8 |
16 |
.75 |
1.5 |
3 |
Table 4. Conversion of fertilizer weights to approximate volumes.
| Fertilizer |
Cups per Pound |
Tablespoons per
Pound |
| Ground limestone |
1 1/2 |
24 |
| Nitrate of soda |
1 1/2 |
24 |
| Potassium sulfate |
1 1/2 |
24 |
| Calcium nitrate |
2 |
32 |
| Superphosphate |
2 1/4 |
36 |
| 10-10-10 |
2 1/4 |
36 |
| 5-10-10 |
2 1/2 |
36 |
| Ammonium nitrate |
2 1/2 |
40 |
| Epsom salts (MgSO4) |
2 1/2 |
40 |
| Aluminum sulfate |
2 3/4 |
44 |
| Hydrated lime |
4 |
64 |
Table 5. Pounds of Fertilizer Needed per 1,000 Square Feet to Supply
Various Amounts of Nitrogen.
| N-P-K |
1 Pound Actual Nitrogen |
1 1/4 Pound Actual
Nitrogen |
11/2 Pounds Actual
Nitrogen |
3 Pounds Actual
Nitrogen |
| 45-0-0 (urea) |
2.2 |
2.7 |
3.3 |
6.5 |
| 33-0-0 (ammonium nitrate) |
3.0 |
3.7 |
4.5 |
9.1 |
| 27-7-7 |
3.7 |
4.6 |
5.6 |
11.1 |
| 21-0-0 (ammonium sulfate) |
4.8 |
5.9 |
7.1 |
14.3 |
| 20-20-20 |
5.0 |
6.2 |
7.5 |
15.0 |
16-4-8,
16-8-8 |
6.2 |
7.8 |
9.4 |
18.8 |
| 15-5-5 |
6.7 |
8.3 |
10.0 |
20.0 |
| 12-4-8 |
8.3 |
10.4 |
12.5 |
25.0 |
| 10-10-10 |
10.0 |
12.5 |
15.0 |
30.0 |
5-10-10,
5-10-5 |
20.0 |
25.0 |
30.0 |
60.0 |
|
