Weeds to reduce nitrogen pollution

Picture copyright WORTMAN

Cover crops reduce nitrogen pollution from croplands, but naturally occurring weeds may provide similar benefits during fallow periods. Agronomist Wortman shows that nitrogen loss is 60% lower in weedy fields than in bare fields. Cover crops are 26% more effective than weeds in reducing nitrogen loss, but given the issues of cover crop adoption, cultivation of fallow weeds looks promising.

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