Elemental sulfur is mainly used as a precursor to other chemicals. Elemental sulfur is one of the oldest fungicides and pesticides. “Dusting sulfur,” elemental sulfur in powdered form, is a common fungicide for grapes, strawberry, many vegetables and several other crops. It has a good efficacy against a wide range of powdery mildew diseases as well as black spot. It is also used in pyro-tech applications and is a main ingredient in black powder.