... 2MgO,NPK12-12-17 bule color,white color fertilizer. NPK12-12-17 Compound fertilizer, NPK fertilizer 12--12-17+2MgO,NPK12-12-17 ... bule color,white color fertilizer.Moisture 2.5MAX Granular 2 ... sometimes modified with superphosphate to make it a better balanced fertilizer. Compost, decayed to a relatively stable, amorphous state, is ...