Sulphur (S) plays a vital role in crop nutrition and is essential for optimal plant growth , yield and quality. The natural supply of Sulphur from the atmosphere has reduced due to cleaner air through a reduction in industrial gas emissions. Combining this with the increased trend towards using high-analysis sulphur free fertilisers has resulted in many regions soils becoming sulphur deficient. As a result demand for sulphur for an agricultural application has grown rapidly.
Although elemental sulphur is readily available in large quantities there are specifications that must be met to make it suitable for a ground application. Sulphur is not soluble. To be effective sulphur must be oxidised by soil microorganisms. There are a number of natural variables that influence oxidisation rates but the particle size of the elemental sulphur is a major factor. For the microbes in the soil to do their work in oxidising the sulphur the particles must be less than 150 µm in diameter.
Swancorp Sulphur Bentonite (NutraGold) or ‘Dispersible Sulphur’, as it is often referred is a gold/tan coloured pastille solid with a very slight odour. Swancorp Sulphur Bentonite (NutraGold) is composed of 90% sulphur and 10% entonite clay.
Swancorp Sulphur Bentonite (NutraGold) is used extensively in the Australian agricultural industry for its ability to break down and release minute elemental sulphur particles to sulphur deficient soils. The bentonite absorbs moisture from the soil allowing the granules to swell and break apart. This action releases the fine sulphur particles, making them available to microbial activity.