... NPK compound fertilizer, composts, Nitrogenou fertilizer(ammonium sulphate, ammo npk 17-17-17 fertilizerComplete Compound Fertilizer Formula Flexible Fertilizerfertilizer as a Complex NPK ... K=PotassiumNPK 15-15-15, NPK 16-16-16, NPK 17-17-17, NPK 18-18-18, NPK 19-19-19, NPK 20 ... 15-5-30, NPK 14-11-25, NPK 28-8-17,NPK 15-30-15, NPK 10-45-10, NPK 13 ...