SOP is a vital nutrient for high-value crops such as vegetables, fruits and nuts. It is essential in nourishing crops and strengthening and helping plants resist disease. It provides better quality produce and ensures a longer shelf life.

SOP performs particularly well with crops that have a low tolerance to the chloride in MOP (such as fruits, vegetables, beans, nuts, potatoes, tea, tobacco and turf grass) and in arid, saline and heavily cultivated soils. There is a potential use for SOP in typical cereal crop fertilizer blends instead of ammonium sulphate. SOP can be sold as a standard powder or as a premium granular or soluble grade product.