Effect of Nitrogen Topdressing at Anthesis and the Association of Flag-Leaf Nitrogen with Grain Protein Concentration in Irrigated Spring Wheat
作者： Peter J. Sexton , Mylen G. Bohle , Rhonda B. Simmons , Russ S. Karow , Ernest Marx
DOI: 10.1080/01904160600686197
关键词: Nitrogen 、 Cultivar 、 Yield (wine) 、 Biology 、 Agronomy 、 Poaceae 、 Chemical composition 、 Plant nutrition 、 Anthesis 、 Irrigation
摘要: ABSTRACT Grain protein is an important component affecting the market value of hard red spring wheat (Triticum aestivum). In high-yielding irrigated environments, consistently attaining desired levels a chronic problem. Nitrogen (N) management has strong effect on concentration. The objective this experiment was to evaluate robustness using flag-leaf N concentration as tool for guiding in-season application in order obtain high-protein wheat. Three on-farm trials were conducted (each location cultivar farmer's choice) where rates varied. evaluated 0, 79, 157, 236, and 314 kg ha−1. To benefit topdressing, all applied basally, or 45 ha−1 reserved from basal dose at heading. Yield response variable across three sites. This study postulated that function initial soil-N availability. Where there yield N, it ...
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