No-till Corn Yield Comparisons Using Winter Peas/Oilseed Radish and Nitrogen Fertilizer
ISSN 2158-9429
Volume 6, Issue 1 - June 2013
Editor: Linda Chalker-Scott
Abstract
A replicated no-till corn experiment used Austrian winter peas plus oilseed radish and Windham winter peas plus oil seed radish planted on two dates compared to no covers and three rates of nitrogen fertilizer (0, 140, 220). Mean soil nitrate levels ranged from 15-23 ppm. The September plantings of Austrian and Windham winter pea mix with zero nitrogen fertilizer had significantly higher nitrate levels (25-47% higher) than the no cover crop treatments. Winter pea plus oilseed radish corn yields averaged 134 bushels with zero nitrogen fertilizer and were significantly higher than the no cover zero fertilizer treatments (108.1 bushels). In the absence of nitrogen, the addition of cover crops significantly increased yield compared to no cover crop.
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