The ReNu2Farm project aims to increase the use of recycling-derived fertilisers such as composts, ammonium salts, mineral concentrates, digestates, and struvite. This will reduce the use of non-renewable rock phosphate and energy-intensively produced mineral nitrogen fertilisers. For farmers, knowledge of the agronomic value of a fertiliser is crucial. The agronomic value comprises above all, the nutrient value: How high is the nutrient content, and how plant-available are these nutrients? Other aspects are the lime as well as the organic matter value. Also, farmers need to be sure that the fertiliser product is safe and does not contain pollutants such as heavy metals or pathogens. […]
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