
A University of Illinois study finds that soybean-to-corn yield ratios have been stable or declining in Midwest states since 1972. Declines are most pronounced in the Western Corn Belt, including Iowa, Minnesota, and the Dakotas.
A flat or falling soybean-to-corn yield ratio affects the relative profitability of planting decisions and the long-run balance between soybean and corn supply. The study has no immediate price impact.
After 563 past neutral report events, Soybeans moved a median -0.1% over 5 sessions (48% higher; middle half -1.7% to +1.6%), and -0.1% over 20.
After 770 past neutral report events, Corn moved a median +0.2% over 5 sessions (54% higher; middle half -1.1% to +1.6%), 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.