
University of Missouri research at Bradford Research Center favors planting corn before soybeans in corn-soybean rotations. The study uses 12 soybean experiments with multiple planting dates and finds that early soybean planting can delay corn and reduce overall rotation productivity.
This is agronomic research on planting order with no direct supply or demand shift, so its price impact is negligible.
After 3,207 past report events, Corn moved a median +0.2% over 5 sessions (54% higher; middle half -1.3% to +1.7%), and +0.5% over 20.
After 2,389 past report events, Soybeans moved a median 0.0% over 5 sessions (50% higher; middle half -1.6% to +1.9%), and +0.1% 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.