Potential yield losses in grain sorghum due to weed interference based on quantitative data from the major grain sorghum-growing areas of the United States are reported by the WSSA Weed Loss Committee. Weed scientists and extension specialists who researched weed control in grain sorghum provided data on grain sorghum yield loss due to weed interference in their region. Data were requested from up to 10 individual experiments per calendar year over 10 yr between 2007 and 2016. Based on the summarized information, farmers in Arkansas, Kansas, Missouri, Nebraska, South Dakota, and Texas would potentially lose an average of 37%, 38%, 30%, 56%, 61%, and 60% of their grain sorghum yield with no weed control, and have a corresponding annual monetary loss of US $19 million, 302 million, 7 million, 32 million, 25 million, and 314 million, respectively. The overall average yield loss due to weed interference was estimated to be 47% for this grain sorghum-growing region. Thus, US farmers would lose approximately 5,700 million kg of grain sorghum valued at approximately US $953 million annually if weeds are not controlled. With each dollar invested in weed management (based on estimated weed control cost of US $100 ha−1), there would be a return of US $3.80, highlighting the return on investment in weed management and the importance of continued weed science research for sustaining high grain sorghum yield and profitability in the United States.

中文翻译：

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美国杂草干扰导致谷物高粱（Sorghum bicolor）的潜在产量损失

WSSA 杂草损失委员会根据美国主要高粱种植区的定量数据报告了由于杂草干扰导致的高粱潜在产量损失。研究谷物高粱杂草控制的杂草科学家和推广专家提供了有关他们所在地区杂草干扰导致高粱产量损失的数据。在 2007 年至 2016 年的 10 年间，每个日历年最多需要 10 次单独实验提供数据。根据汇总的信息，阿肯色州、堪萨斯州、密苏里州、内布拉斯加州、南达科他州和德克萨斯州的农民可能平均损失 37%， 38%、30%、56%、61% 和 60% 的高粱产量没有除草，相应的年货币损失分别为 1900 万美元、3.02 亿美元、700 万美元、3200 万美元、2500 万美元和分别为3.14亿。对于这个高粱种植区，由于杂草干扰导致的总体平均产量损失估计为 47%。因此，如果杂草得不到控制，美国农民每年将损失约 57 亿公斤高粱，价值约 9.53 亿美元。每投资一美元用于杂草管理（基于估计的杂草控制成本 100 美元公顷-1)，将获得 3.80 美元的回报，突出了对杂草管理的投资回报以及继续进行杂草科学研究对于维持美国高粱高产和盈利能力的重要性。