Scientists say yields from crops fertilised with recycled human waste rival those produced by organic methods
Using fertilisers derived from human faeces and urine can be as productive as conventional organic ones, with no risk of transmitting disease, according to new research.
The lead co-author Franziska Häfner, a PhD student at University of Hohenheim in Germany, said: “The fertilisers from nitrified human urine gave similar yields as a conventional fertiliser product, and did not show any risk regarding transmission of pathogens or pharmaceuticals.” Synthetic fertilisers are credited with increasing food production and reducing hunger, but they come with huge environmental costs, including air and water pollution, as well as driving declines in wildlife. Fertilisers have high greenhouse gas emissions, with synthetic nitrogen fertilisers responsible for aboutMeanwhile, the cost of fertiliser has increased exponentially.
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