Ammonium sulfate fertilizer is a physiological acid fertilizer containing 21% ammonium nitrogen and 24% sulfur. It is also known as 'Sugar Fertilizer' among farmers because it resembles crystal sugar in appearance. Since the nitrogen they contain is in ammonium form, it is not washed away from the soil and is effective for a long time. The sulfur in sulphate form they contain is completely sufficient to meet the needs of plants. Since it acidifies the environment when dissolved in the soil, it increases the uptake of micronutrients in calcareous-high pH soils.