Polysulphate: perfect for NPK production

8 February 2016

Every farmer wants to see a good yield. Whether they get that or not will depend, to a large extent on whether they have planned, sourced and applied - in the correct way at the right time - the right fertilizer formula for the crop. Incorporating Polysulphate (the trade name for polyhalite) into granulated fertilizer makes a good yield more likely.

Available when needed
Responding to the right soil temperatures, air temperature and available light, root and shoot growth in crops make their demands on available nutrients. Any shortfall in nutrients is detrimental to crop performance. NPK granular fertilizers are often the first choice to keep crops fed but achieving the perfect balance of all crop nutrients required is possible by incorporating Polysulphate into the fertilizer.

The effectiveness of existing NPK fertilizers is much improved with the addition of S, K, Mg and Ca found in Polysulphate. The standard grade it is the perfect raw material for other components. It is compatible with a wide variety of NPK fertilizers allowing tailoring to the needs of various crops, soil types and climatic conditions.

Efficiency in production and application
As if the versatility was not enough, there are other gains to be made too. NPK fertilizers based on Polysulphate have lower production costs and energy requirements compared with traditional SOP or MOP-based products.

Worth the weight
As much as 20% of NPK fertilizer is actually filler to ease the handling, application or placement of the fertilizer. The replacement of that filler and kieserite with Polysulphate provides better value. With the extra S and Ca in the formula no filler is needed. (Include the graph ‘Providing more Nutrients” from leaflet)

Providing more nutrients
Comparison of NPK and PK production with Polysulphate (polyhalite)

Physical Quality
Polysulphate helps granulation and increases output. For operators there are advantages: due to Polysulphate’s high crystal strength there is less likelihood of dust during production and handling.

Contributing to yield increases
Protection the yield potential of the crop is key. For many farmers the main raw materials of fertilizer will continue to be ammonium nitrate, urea, superphosphates, MOP and SOP. Compatible with all these, Polysulphate is the new alternative. It is a solution providing timely, and available, essential S, K, Mg and Ca. Farmers respond well to the offer of a cost-effective and efficient nutrient boost. The crops respond positively too.