Composition of some important fertilizers
Common names |
N | P2O5 | K2O | S | MgO |
Nutrients as % of product |
|||||
Nitrogen fertilizers | |||||
Ammonia | 82 | 0 | 0 | 0 | 0 |
Ammonium sulphate | 21 | 0 | 0 | 23 | 0 |
Ammonium nitrate | 33-34.5 | 0 | 0 | 0 | 0 |
Calcium ammonium nitrate | 20.4-27 | 0 | 0 | 0 | 0 |
Urea | 45-46 | 0 | 0 | 0 | 0 |
Phosphate fertilizers | |||||
Single superphosphate | 0 | 16-20 | 0 | 12 | 0 |
Triple superphosphate | 0 | 46 | 0 | 0 | 0 |
Diammonium phosphate | 18 | 46 | 0 | 0 | 0 |
Monoammonium phosphate | 11 | 52 | 0 | 0 | 0 |
Ground rock phosphate | 0 | 20-40 | 0 | 0 | 0 |
Potash fertilizers | |||||
Muriate of potash (potassium chloride) |
0 | 0 | 60 | 0 | 0 |
Sulphate of potash | 0 | 0 | 50 | 18 | 0 |
Sulphate of potash magnesia | 0 | 0 | 22-30 | 17-22 | 10-11 |
Magnesium fertilizers | |||||
Kieserite | 0 | 0 | 0 | 20-22 | 25-27 |
Epsom salt | 0 | 0 | 0 | 12-13 | 15-16 |
Complex fertilizers | |||||
NPK fertilizers | 5-25 | 5-25 | 5-25 | * | * |
NP fertilizers | 15-25 | 15-25 | 0 | * | 0 |
NK fertilizers | 13-25 | 0 | 15-46 | * | 0 |
PK fertilizers | 0 | 7-30 | 10-30 | * | * |
* some with S and/or Mg and/or micronutrients Note: the above numbers represent the average range of nutrient content in commercially available fertilizers |
No comments:
Post a Comment