Elemental Sulphur is a convenient form of sulphur which can be broadcast applied to a number of crops. Elemental sulphur needs to breakdown into small particles so soil bacteria can transform the sulphur into sulphate to be taken up by the plant. However, transformation of sulphur to sulphate is a slow release process which can take a few months.
Ammonium sulphate is made by combining ammonia and sulphuric acid and is used predominantly in pasture crops or pasturey. It is used to correct or prevent a sulphur deficiency in the plant and the ammonium ions are converted to nitrate by soil bacteria. Ammonium sulphate is often used in horticulture, sugarcane and some cropping areas.
Also known as Sulphate of Potash, has a lower salt index than Muriate of Potash and is often used on crops sensitive to chloride, where salt levels are high or on crops sensitive to fertiliser burn.