The correct answer is: Calcium sulphate.
Ammonium sulphate, calcium ammonium nitrate, and potassium nitrate are all fertilizers. They are all salts that contain nitrogen, which is an essential nutrient for
plants. Calcium sulphate, on the other hand, is a mineral that does not contain nitrogen. It is used as a soil amendment to improve drainage and reduce acidity.Ammonium sulphate is a common fertilizer that is used to provide nitrogen to plants. It is a white, crystalline solid that is soluble in water. Ammonium sulphate is produced by the reaction of ammonia with sulfuric acid. It is a relatively inexpensive fertilizer and is widely used in agriculture.
Calcium ammonium nitrate is a fertilizer that contains both nitrogen and calcium. It is a white, crystalline solid that is soluble in water. Calcium ammonium nitrate is produced by the reaction of ammonium nitrate with calcium carbonate. It is a relatively expensive fertilizer but is used in some areas where calcium is deficient in the soil.
Potassium nitrate is a fertilizer that contains both potassium and nitrogen. It is a white, crystalline solid that is soluble in water. Potassium nitrate is produced by the reaction of potassium chloride with nitric acid. It is a relatively expensive fertilizer but is used in some areas where potassium is deficient in the soil.
Calcium sulphate is a mineral that is not a fertilizer. It is a white, crystalline solid that is insoluble in water. Calcium sulphate is produced by the weathering of limestone or gypsum. It is used as a soil amendment to improve drainage and reduce acidity.