Percentage of potassium in sulphate of potash is:A) 46%B) 48% C) 60%D) 32%

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Sulfate potash magnesia (K2SO. MgSO4) is essentially a mixture of potassium sulfate and kieserite with 18% K and 11% Mg. This is a useful fertilizer to apply to nonchloride crops when there is a need for Mg. Potassium nitrate (KNO3) is mainly used in intensive horticulture under glass.