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Plant biostimulants, nitrification inhibitors, urease inhibitors and controlled release fertilisers (herein collectively referred to as Enhanced Efficiency Fertilisers, EEFs) are increasingly being adopted by farmers and have the potential to increase efficiency, and reduce the environmental footprint, of UK agricultural systems. There are myriad EEF products available, claiming benefits of, amongst others: biostimulants improving stress tolerance and increasing nutrient uptake; controlled release fertilisers reducing overall fertiliser requirement; and urease inhibitors preventing the majority of ammonia losses from urea applications. The overall aim of this project was to review evidence and make recommendation for options to best enable safe and effective use of Enhanced Efficiency Fertilisers in the UK.
EEF_FINAL_COLLATED_REPORT.pdf745.54 KB
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Biostimulants are increasingly available and are now widely marketed to farmers. While the jury is still out on a definitive definition, most definitions of biostimulants explain that they should stimulate plant nutrition processes independently of the product’s nutrient content with the aim of improving one or more of the following characteristics: nutrient efficiency, tolerance to abiotic stress, and/or quality.
Plants need around 12 essential mineral nutrients to grow: Nitrogen (N), Phosphorous (P), Potassium (K), Magnesium (Mg), Sulphur (S), Calcium (Ca), Iron (Fe), Manganese (Mn), Zinc (Zn), Copper (Cu), Boron (B) and Molybdenum (Mo).
A range of products are commercially available that claim to enable more efficient nutrient uptake, allowing less nutrient to be applied as fertiliser.
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