Arkansas University extension notes that harvest-time barge demand rises while river restrictions limit how many barges can make the trip. Farmers without enough on-farm storage must sell crops at harvest and often ship them by barge.
The article notes Arkansas has 235 million bushels of on-farm storage.
Fewer available barges at harvest raise per-bushel freight costs and widen the basis for soybeans sold in the South. Farmers with storage can hold beans for better prices.
Not enough comparable past events yet for a historical read.
After 297 past bearish logistics events, Soybeans moved a median +0.3% over 5 sessions (54% higher; middle half -1.5% to +1.8%), 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.