Many farmers use cover crops to help keep their soil as healthy as possible without pesticides or artificial fertilizers. And one of cover crops' main functions is to block invasive weeds. Weeds tend to grow the fastest in plots of land where nothing else is growing because there are no other plants to get in their way. Cover crops, however, can prevent them from sprouting up a farmer's field by taking up space that weeds would otherwise try to take over.
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