Sirius Minerals’ global agronomy programme provides technical, agronomic and commercial validation for POLY4’s use as an effective multi-nutrient fertilizer suitable for widespread use in commercial farming.

Agronomy programme

Our ongoing programme, conducted in partnership with leading agricultural universities, research institutions and commercial associates, operates across five continents. So far, we have directed over 300 trials, in over 50 locations, with more than 30 of the world’s major crops.

These studies tested POLY4 on broad acre and high value crops directly against other potassium based fertilizers, both as a straight comparison and as a component in an NPK blend. Results consistently show that POLY4 outperforms muriate of potash (MOP) and sulphate of potash (SOP) in both crop yield and quality, demonstrating the agronomic advantage provided by POLY4's multi-nutrient content. For further details of our agronomy programme, please visit our POLY4 website.

Laboratory results have also ratified the benefits of the POLY4's physical and chemical characteristics (e.g. compatibility, solubility, low chloride, crush strength). Now into our fifth year of trials, the scope and scale of the research demonstrates our long-term commitment to further developing the agronomic understanding of POLY4.

Click here to visit the POLY4 website


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