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Thursday, October 22, 2009 11:33 AM

Nitrogen cycling via cover crops protects groundwater

From Kansas State University Extension

MANHATTAN -- One of the range of reasons for growing cover crops is to "trap" nitrogen in the soil and preserve it for future use.

A trap crop actually absorbs nitrogen from the soil, said Dave Mengel, soil fertility specialist with Kansas State University Research and Extension. Unless the crop is then grazed or harvested, however, the nitrogen it absorbs will remain on-site, preserved within the residue for use by future crops.

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