Ammonium Sulfate (21-0-0), Nitrogen/Sulfur Fertilizer

Ammonium Sulfate is a nitrogen fertilizer, and is a common replacement for Urea(the most common nitrogen fertilizer). While urea is pure nitrogen, Ammonium sulfate also provides some of the sulfur nutrient, and soil acidification. Another feature of ammonium sulfate is that it is a slower release fertilizer, which has various benefits.