
A study in Nature Food modeled how export restrictions by three key exporters of each crop could raise wheat prices by about 70%, maize by 40% and rice by 60%. Combined with local production shocks, prices could nearly double.
The findings show how quickly export restrictions by a few major exporters could lift global grain prices. This is a scenario analysis rather than a new policy, so its near-term price impact is limited.
After 182 past bullish policy events, Wheat (SRW) moved a median +0.1% over 5 sessions (52% higher; middle half -1.9% to +1.4%), and -0.3% over 20.
After 318 past bullish policy events, Corn moved a median -0.1% over 5 sessions (48% higher; middle half -1.4% to +1.5%), and -0.2% over 20.
After 168 past bullish policy events, Rough Rice moved a median +0.8% over 5 sessions (57% higher; middle half -1.7% to +2.1%), and -0.4% 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.