... 1.Nitrogen content 20.5% 2.high quality, cheap price 3.high-effeciency fertilizer,suitable for common soil Granular Ammonium Sulphate Fertilizer N ... season.4,Min Nitrogen content 20.5% .5,Free of chloride, safe to most crops especially cash crops. Granular Ammonium Sulphate Fertilizer N 20 ...