Most gardeners know that earthworms help keep soils healthy, now scientists have assessed just how important their underground activities are to global food production – and how to protect them.
scientists found that earthworms may be to thank for more than six percent of global grain yields every year, because of their crucial role in soil ecosystems.
Evidence suggests they also help plants protect themselves against common soil pathogens by stimulating their defenses. Researchers writing in the journal Nature Communications analyzed maps of earthworm populations, soil properties, crop yields and previous studies of plant productivity to estimate the creature's impact on the global production of key crops.They found earthworms may contribute to around 6.5 percent of the world's annual grain production, which includes dietary staples such as wheat, rice, maize and barley.
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