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The University of Illinois crop update for September 12 reports moderately dry soils across northern and central Illinois, with harvest beginning early in Logan County as warm weather speeds drydown. Field surveys show disease pressure mainly in corn and expected higher yields where rainfall was intermittent or soils held more water.
Early harvest and drought-related stress point to a mixed Illinois crop, with disease losses in corn tempering yields. Harvest progress is a routine signal that adds modest pressure to near-term cash prices.
farmdoc.illinois.eduIllinois ExtensionSep 12, 2025After 445 past neutral weather events, Corn moved a median +0.1% over 5 sessions (52% higher; middle half -1.4% to +1.6%), and +0.7% over 20.
After 324 past neutral weather events, Soybeans moved a median +0.0% over 5 sessions (52% higher; middle half -1.4% to +1.7%), and +0.7% 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.
