Legume cover crop management on nitrogen dynamics and yield in grain corn systems

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• 作者：Claire Coombs^a ; John D. Lauzon^b ; Bill Deen^c ; Laura L. Van Eerd^a ; ^{lvaneerd@uoguelph.ca}
• 关键词：SMN ; soil mineral nitrogen ; PAN ; plant available nitrogen ; no-cc ; no cover crop control treatment ; no-cc0N ; no-cc112N ; no-cc224N ; no cover crop treatment with 0 ; 112 ; 224  ; kg  ; N  ; ha&minus ; 1 respectively ; fertilizer applied to corn crop
• 刊名：Field Crops Research
• 出版年：2017
• 出版时间：1 February 2017
• 年：2017
• 卷：201
• 期：Complete
• 页码：75-85
• 全文大小：788 K
• 卷排序：201

文摘

Lower fall soil mineral N with alfalfa, red- & crimson-clover than no cover crop. Alfalfa ≥ red clover > > crimson clover positive impact on corn grain yield in 1 of 2 yr. Plant available N (PAN = plant + soil mineral N) recommended to study N dynamics. At corn harvest PAN was higher with alfalfa & red clover than no cover in 1 of 2 yr. Higher PAN with spring-than fall-tillage of cover crops regardless of soil type.