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Illinois experienced a challenging 2025 season with an abnormal March, windy spring conditions, uneven planting from heavy rain, poor soybean stands, and crusting. Some southern counties had significant prevented-planting acres, and disease pressure such as septoria brown spot affected soybeans.
Uneven planting and disease losses in Illinois trim local output, but the effect on national supply is limited when offset by strong yields elsewhere.
fieldadvisor.orgStephanie PorterDec 19, 2025After 1,465 past bullish weather events, Corn moved a median +0.2% over 5 sessions (54% higher; middle half -1.4% to +1.9%), and +0.9% over 20.
After 1,079 past bullish weather events, Soybeans moved a median +0.3% over 5 sessions (54% higher; middle half -1.4% to +2.0%), and +0.9% over 20.
Moves of each commodity's benchmark from the last close before the event. Historical reads pool past events of the same kind; they describe what happened, not what will. Not investment advice.
