Urea, nitrates, superphosphates, potassium salts and complex NPK fertilizers: what, how much and when. · 10 guides
Ammonium Nitrate
34% N
Ammophos
NPK 12-52
Calcium Nitrate
15.5% N + 19% Ca
Double Superphosphate
45% P₂O₅
Nitroammophoska
NPK 16-16-16
Potassium Chloride
60% K₂O
Potassium Monophosphate
0-52-34
Potassium Sulfate
Sulfate of Potash, 50% K₂O
Simple Superphosphate
20% P₂O₅
Urea
Carbamide, 46% N