Testing of nitrified urine fertiliser and faecal compost in P2GreeN's German pilot region

This poster presents results from the North German Plain pilot region of the P2GreeN project. Crop trials with kohlrabi, rye, white mustard, zucchini and buckwheat showed that faecal compost from dry toilet contents combined with nitrified urine fertiliser (Aurin®) achieved yields comparable to conventional mineral fertilisers. Heavy metals and organic pollutants were below German and EU limit values, no Salmonella was detected, and pharmaceutical residues were reduced by more than 80% during treatment. The poster concludes that the recycled fertilisers are safe for agricultural use, while legal adjustments are still required for widespread implementation.