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Agriculture

Can microbes replace synthetic fertilizer?

Companies aim to curb pollution from fertilizer by replacing it with nitrogen-producing microbes. Some farmers and researchers doubt they work as advertised

by Matt Blois
July 31, 2023 | A version of this story appeared in Volume 101, Issue 25
A corn field in Waseca, Minnesota.

Credit: Daniel Kaiser | University of Minnesota Twin Cities agricultural researcher Daniel Kaiser found that adding a nitrogen-producing microbe to corn increased yield at this site in Waseca, Minnesota. But he didn't see that effect in other trials.

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