With the current explosion of raw materials, human urine, rich in nitrogen and potash, but also in magnesium and trace elements, is taking center stage on the agricultural scene.
A fertilizer that is much less expensive than mineral fertilizers, but whose recovery and use techniques still need to be improved.
Thus, on the fertile plateau of Saclay, about thirty kilometers south of Paris, researchers, farmers and the manager of the public development establishment (EPA) of this area - where fields, housing and businesses rub shoulders innovative - are working on the subject.
"I have been spreading human urine on a wheat plot of more than one hectare for two seasons as a replacement for nitrogenous mineral fertilizer
"
,
explains Emmanuel Laureau, grain farmer at the Martinière farm in Saclay.
In terms of yield, human urine is identical to mineral nitrogen, around 90 to 100 quintals of wheat per hectare. “
On the other hand, nitrogen is very…
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