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K-State researchers test field peas in crop rotations

MANHATTAN – Kansas State University researchers are reporting findings indicating that adding a legume -- such as field peas – to a grass-heavy crop rotation seems to be a good option for fixing nitrogen levels in the field. Cropping systems agronomist Kraig Roozeboom and graduate researcher Sarah Zerger have been conducting trials in Colby, Hays, Scandia and Manhattan. “We have data to show that the wheat after peas was actually looking better than after the soybeans at the eastern locations,” Roozeboom said. Zerger added that “we had more residual soil nitrogen at wheat planting” after a crop of field peas. “By finding that there’s more nitrogen in the soil, we can apply less fertilizer to both our wheat and potentially our corn,” she said.

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