Available phosphorus (AP2O5) min16.0%, water soluble phosphorus (W P2O5) content min14.0%, free acid (calculated by f P2O5) SSPSSP is a water soluble quick-acting fertilizer and its available phosphorus (AP2O5) content is over 16%. The product can be used as base manure, topdressing, seed manure and raw materials for blending compound fertilizers. This product is extensively applied to varieties ...