Nitrogen-phosphorus-potassium fertilizer NPK-1 (diamophoska) is a mineral fertilizer designed for use in agriculture. It is used for cereal grain crops and contains high concentrations of nitrogen, phosphorus, and potassium. This ensures comprehensive plant nutrition at all growth and development stages. The product is available in granular form, which facilitates storage and application. The fertilizer contains 10±1% nitrogen, 26±1% phosphorus (P2O5), and 26±1% potassium (K2O), making it effective for increasing crop yields. This fertilizer can be used as a main application or supplementary feed, depending on plant requirements. The manufacturer, AT "Voskresenskii Mineralnye Dobra" located in the Russian Federation, is known for its quality products. This fertilizer is suitable for use on various soil types and provides stable results when applied correctly.