Unlocks access to nutrients to maximise their use
POLY4 improves nutrient availability in the soil and enhances nutrient use efficiency - reducing waste in the field and saving you money.
POLY4 improves nutrient availability in the soil and enhances nutrient use efficiency - reducing waste in the field and saving you money.
It does this through its optimised nutrient release, support for nutrient exchange in soil, balanced nutrition, and stimulating nutrient mobilisation by soil microbiome.
The POLY4 granule is engineered for optimal release, providing extended availability of the key nutrients potassium (K) and magnesium (Mg), while continuously supplying sulfur (S) and calcium (Ca). This sustained delivery means crops have more time to absorb essential nutrients, improving yield and quality.
K2O
14%
SO3
48%
MgO
6%
CaO
17%
Plants need nutrients throughout their growing cycle. Unlike regular fertilisers that release nutrients quickly and fade fast, POLY4 keeps K and Mg available for longer, and supplies S and Ca continuously. This gives crops more time to take up nutrients and helps reduce losses from leaching.
The graph highlights the extended nutrient release pattern compared to regular fertilisers.
Simplified representation of POLY4’s nutrient release in average field conditions. Actual release depends on water supply, temperature and soil conditions. Term “regular fertilisers” refers to MOP, SOP and ammonium sulphate.
Nutrient use efficiency (NUE) – relates to the amount of nutrient taken up by the plant to the amount of nutrient applied (nutrient uptake / nutrient applied) in the field.
Alongside its optimised release of 4 key nutrients, POLY4 also helps crops better access nutrients already present in the soil.
% improvements compared to standard NPK programmes
+10%
Nitrogen
+17%
Phosphorus
+6%
Potassium
"With polyhalite we have managed to reduce the amount of nitrogen we use. Plus we know the quality of product is improved"
Andrea Bernardi, Apple & Kiwi Farmer, Italy
See how POLY4 can help provide a better balance of efficient nutrition use.
Enhances output
POLY4 helps you grow better crops, bigger harvests, and stronger profits year after year.
Strengthens resilience
POLY4 helps crops stand strong against disease, stress and tough weather - securing your yields in uncertain times.
Cares for your soil
POLY4 enriches your soil helping to improve its structure and function without negatively impacting its long-term health.
A perfect fit for sustainable farming
POLY4 helps you farm smarter, in a nature-friendly way - so you can keep farming for years to come.
POLY4® is a trademark of Anglo American Woodsmith Limited.
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