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University of Illinois and USDA-ARS research using a 26-year herbicide trial dataset finds that inadequate late-season weed control caused a 41% soybean yield loss. Even high weed control levels did not prevent significant losses under drought and heat, and herbicide resistance is making complete control harder.
The findings point to structural yield pressure in soybeans from weeds and resistance, which could support soybean yield risk over time, but the effect on current prices is limited.
aces.illinois.eduLauren Quinn2022年4月11日在过去 324 次中性的天气事件之后，大豆 在 5 个交易日内中位数变动 +0.0%（52% 上涨；中间一半区间为 -1.4% 至 +1.7%），20 个交易日内为 +0.7%。
各商品基准价相对事件前最后收盘价的变动。历史数据汇总同类过往事件；仅描述已发生的情况，不代表未来走势。不构成投资建议。
