Determination of barley (Hordeum vulgare L.) nutrient uptake in residue biomass is important for agronomic, economic, and environmental decisions. Improved understanding of grain yield, residue biomass, nutrient uptake, and their relationships are needed. Research determined these factors in 2018 and 2019 from trials of four barley classes (spring animal feed, human food, and malt, as well as winter malt), using three common cultivars of each, at five locations in southern Idaho. Production environment created the largest difference in residue biomass and nutrient uptake. Barley harvest index ranged from 0.46 to 0.52 Mg Mg−1 across feed, food, and malt classes. Compared to previous estimates, nutrient concentrations from the combined dataset were greater than for N, less than for P, and greater than for K. Correlation of grain yields to nutrient uptake (excluding Cu and Fe) had r2 ranging from 0.68 to 0.89. At current prices, economic analysis indicated that fertilizer replacement costs for total residue biomass nutrients were greater than previous estimates and could greatly exceed current sale value. These relationships and value estimates can be used to improve prediction of barley residue biomass production and nutrient uptake to guide best management practices. The decision of how to utilize these metrics (on‐farm, regional, etc.) should be considered based on known variation in measured nutrient and residue data and considered in relation to the proposed task.

中文翻译：

---

大麦残渣生物量、养分含量及其与粮食产量的关系


测定残留生物量中大麦 (Hordeum vulgare L.) 养分吸收对于农艺、经济和环境决策非常重要。需要加深对谷物产量、残留物生物量、养分吸收及其关系的了解。研究在 2018 年和 2019 年通过在爱达荷州南部五个地点对四种大麦（春季动物饲料、人类食品、麦芽以及冬季麦芽）的试验确定了这些因素，每种大麦使用了三种常见品种。生产环境造成残渣生物量和养分吸收的最大差异。饲料、食品和麦芽类别的大麦收获指数范围为 0.46 至 0.52 Mg Mg−1。与之前的估计相比，合并数据集中的养分浓度大于 N、小于 P、大于 K。谷物产量与养分吸收（不包括 Cu 和 Fe）的相关性 r2 范围为 0.68 至 0.89。按照目前的价格，经济分析表明，总残留生物质养分的化肥替代成本高于之前的估计，并且可能大大超过当前的销售价值。这些关系和价值估计可用于改进对大麦残渣生物量生产和养分吸收的预测，以指导最佳管理实践。应根据测量的养分和残留数据的已知变化来考虑如何利用这些指标（农场、区域等），并考虑与提议的任务的关系。