US corn futures rose slightly on August 25 as crop tour projections came in below USDA estimates and disease concerns raised yield loss risks. In Asia, Dalian corn futures fell, and Russia kept its corn export duty at zero.
Brazil's corn exports in the first three weeks of August trailed the prior year's full-month pace.
Yield doubts from crop tours and disease risk give some support to corn prices, while Brazilian export pace and Russian pricing show competition for export sales. Net effect is mildly supportive for corn values.
Not enough comparable past events yet for a historical read.
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.