EntityQ904292· pop 15· linked from 45 articlesNPK ratingSign in to saverelative content of the chemical elements nitrogen, phosphorus, and potassium in fertilizerConnectionssuperphosphateEntityUnited KingdomCountrynitrogenEntitychemical elementEntityphosphorusEntitypotassiumEntityammoniaEntityWayback MachineEntityfertilizerEntitygramEntitymoleEntityatomic massEntityureaEntitypotassium nitrateEntityammonium nitrateEntitycalcium oxideEntityguanoEntitypotassium chlorideEntityammonium sulfateEntitysulfur trioxideEntityCategoriesAgricultural chemicalsFertilizersPackaging