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São Paulo's agriculture department forecasts a transition from La Niña to El Niño, with rainfall likely continuing until the end of April. It recommends planting second-crop corn between March 15 and 31, and it flags fall armyworm risk in corn fields.
Extended rains favor a timely safrinha planting window, which supports a larger second crop, while the pest risk is a minor yield concern. The El Niño transition is a longer-term factor for South American weather.
portal.datagro.com2026年2月19日在过去 445 次中性的天气事件之后，玉米 在 5 个交易日内中位数变动 +0.1%（52% 上涨；中间一半区间为 -1.4% 至 +1.6%），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。
