Heavy rain is delaying the harvest in parts of Iowa and South Dakota. Farmers report concerns about soybean pod shattering, corn stalk and crown rot, and corn lying in mud where molds and sprouting could occur, with some fields not expected to resume harvest for about a week.
Harvest delays and crop quality losses from rot, lodging and sprouting could reduce usable corn and soybean supply at the margin, supporting feed grain prices if the damage spreads beyond these local fields.
After 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.