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Journal of Agronomy
Year: 2008  |  Volume: 7  |  Issue: 3  |  Page No.: 272 - 276

Mineral Nitrogen Effects of Hairy Vetch (Vicia villosa Roth) on Maize (Zea mays L.) by Green Manure Amounts

J.H. Seo and H.J. Lee    

Abstract: Legume with low C-to-N is more getting acceptance as an alternative to nitrogen (N) fertilizer because of high price of N fertilizer recently. Amounts of fresh aboveground hairy vetch equivalent to N rates of 80, 160 and 240 kg ha-1 were incorporated into soil as alternative N source for two years of maize in Suwon, Korea and were compared to the same N amounts applied as N fertilizer, ammonium nitrate. Soil organic N was increased considerably by hairy vetch. Dry matter (DM) yields of maize increased more in hairy vetch than ammonium nitrate with N rates over 160 kg ha-1. Maize N yields were not different between two N sources with N rates under 160 kg ha-1, but was higher in hairy vetch than ammonium nitrate with N rate 240 kg ha-1 showing superior mineral N alternative of hairy vetch to N fertilizer at high N rate.

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