Polysulphate

Studies have shown that the mineral reserves in the soil eventually decline. But not always, for example, most of the potassium in a harvested grain crop will be in the straw. So when it is commercially reasonable to sell straw, it is important to increase potassium inputs to compensate. The potassium in Polysulphate complements routine fertilizer applications.

Magnesium is often only added directly to some crops and vegetables. Magnesium is part of the chlorophyll in all green plants and crucial for photosynthesis. It is removed in considerable quantities by harvesting all crops, and Polysulfate will provide a useful supply of a nutrient often overlooked.

The fourth component of Polysulfate is calcium, which means that Polysulfate actually has no non-nutrients. Calcium is responsible for proper plant cell division and for strengthening cell walls. Polysulfate helps maintain essential calcium reserves in the soil.

Polysulfate is particularly suitable for crops that prefer low levels of chloride in the soil, such as in fruits, and where higher solids are desirable in potatoes and other vegetables.

Apply at the beginning of spring, to oilseed rapeseed to optimize the synthesis of yield, protein and oil. For wheat to increase yield and to ensure grain protein quality. On painted barley for yield and quality.

Apply directly in the seedbed or immediately after germination. This is a zero-N fertilizer that brings readily available sulfur to the crop, and can therefore be picked up by the plant at an early stage to feed the nitrogen fixation, which occurs in the roots and for protein synthesis in the plant.

The use of livestock manure and manure is not a safe source of available sulphate, and is best regarded as maintaining soil reserves. Polysulfate should be applied in accordance with nitrogen requirements as needed to achieve optimal grass growth throughout the season in proper N: S ratio.