Inorganic fertilizers are manufactured fertilizer products that provide nutrients to plants in an inorganic form. They are distinguished from organic fertilizers which are natural materials of plant or animal origin. Common inorganic fertilizers include ammonium phosphate and potassium sulfate which provide nitrogen, phosphorus, and potassium to plants. Inorganic fertilizers are popular for commercial agriculture due to their high nutrient content, ability to be custom formulated, and ease of storage, application, and use.