... : (1) can be used as base fertilizer. When using potassium sulfate as basal dry, deep application must cover soil to reduce ... drawback is easy to produce hydrogen sulfide poisoning. (2) potassium sulfate prices are more expensive, in general, in addition to avoid chlorine ... plant, the Can not use potassium chloride to potassium sulfate. (3) of the cruciferous crops, more crops need sulfur, is ...