Fertilizer – Number of Parts per million (1 mg/ 1 littler) of nutrient element in a nutrient solution when 1 gram of the fertilizer compound is dissolved in 1 gallon of water.
| Fertilizer |
N |
P |
K |
Ca |
Mg |
S |
Cl |
|||
| Potassium nitrate |
13.75%N
|
44.5%K |
36 |
|
97 |
|
|
|
|
|
| Potassium sulfate |
41.5%K |
17%S |
|
|
110 |
|
|
45 |
|
|
| Muriate of potash |
49.8%K |
45%Cl |
|
|
131 |
|
|
|
119 |
|
| Monopotassium phosphate |
22%P |
28%K |
|
60 |
75 |
|
|
|
|
|
| K-Mag |
18%K |
11%Mg 22%S |
|
|
48 |
|
29 |
58 |
|
|
| Monocalcium phosphate |
20%P |
13%Ca |
|
53 |
|
34 |
|
|
|
|
| Calcium nitrate |
|
|
41 |
|
|
50 |
|
|
|
|
| Calcium chloride |
28%Ca |
|
|
|
|
74 |
|
|
169 |
|
| Ammonium nitrate |
33.5%N |
|
88 |
|
|
|
|
|
|
|
| Ammonium sulfate |
21%N
|
24%S |
55 |
|
|
|
|
63 |
|
|
| Urea |
46%N |
|
121 |
|
|
|
|
|
|
|
| Nitric acid |
15.5%N |
|
41 |
|
|
|
|
|
|
|
| Nitric acid |
.209g N/ml) |
|
55 |
|
|
|
|
|
|
|
| Ammonium polyphosphate |
15%N
|
26.2%P |
39 |
69 |
|
|
|
|
|
|
| Diammonium phosphate |
18%N 20%P |
|
47 |
53 |
|
|
|
|
|
|
| Phosphoric acid |
1 g |
|
62 |
|
|
|
|
|
|
|
| Phosphoric acid |
.385g P/ml |
|
96 |
|
|
|
|
|
|
|
| Epsom salts |
9.9%Mg |
13% S |
|
|
|
|
26 |
34 |
|
|
| Calcium sulfate (Gypsum) |
18.6%Ca |
14.9% S |
|
|
|
49 |
|
39 |
|
|
Using 3.5 ounces of the above fertilizer compound dissolved in 100 gallons of water would yield the same ppm of element in solution as those given above for 1 gram per gallon.