Grasslands in large parts of the world are getting little if any fertiliser, which is leading to soil exhaustion. Farmers will have to apply four times as much phosphorus fertilisation in 2050 in order to make the soil fertile again. Only then will there be sufficient grass and hay to produce enough milk and meat for the rapidly growing global population, writes Martin van Ittersum, Professor in Plant Production Systems in Wageningen, in trade magazine Nature Communications.
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Source: Wageningen UR