Evaluating Split Nitrogen Applications and In-Season Tests for Organic Winter Bread Wheat
作者: Erin H. Roche Ellen B. Mallory and Heather Darby
刊名: Organic Farming, 2017, Vol.3 (1)
来源数据库: Librello Publishing
DOI: 10.12924/of2017.03010003
关键词: Grain crude proteinGrain yieldHard red winter wheatPre-plant NPlant N uptake
原始语种摘要: Achieving high grain yields and crude protein (CP) standards in organic winter wheat (Triticum aestivum L.) is challenging because ensuring that adequate nitrogen (N) is available at key periods of wheat growth is difficult in organic systems. Split application regimes and in-season N management tests may improve organic production. In field trials conducted over four site-years in Maine and Vermont, USA, N application regimes were analyzed for their effects on organic winter wheat, N uptake, grain yield, and CP. Tiller density and tissue N tests were evaluated as in-season decision tools. Eight treatments arranged in a non-factorial design differed in terms of N application timing (pre-plant (PP), topdress at tillering (T1), and topdress at pre-stem extension (T2)) and N rate. Treatments...
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  • wheat 小麦
  • Grain 谷物
  • grain 颗粒
  • plant 植物
  • yield 成品率
  • tiller 分蘖
  • conducted 有陪同的
  • organic 有机的
  • protein 蛋白质
  • season 季节