Potassic Fertilisers:

The potassium content of potassic fertilizers is usually expressed as potassium oxide. K2O, referred to as potash. These fertilizers are manufactured form minerals and ores. The commercial fertilizers are salts of potassium usually chlorides and sulphates which are soluble hence readily available to the plants.

S. No.

Fertiliser

% K2O

i

 Potassium chloride or muriate of potash (KCI)

48 to 62%

ii

 Potassium sulphate or sulphate of potash (K2SO4)

48 to 52%

iii

 Potassium Magnesium sulphate (K2SO4. 2MgSO4)

22%

iv

 Potassium Schoenite (K2SO4.MgSO4.6H2O)

22 to 24%


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