USDA corrects September corn figures; October forecasts unchanged
NASS says a processing error affected September corn statistics, including U.S. yield and production forecasts, and has been corrected.
What the record says
An October 23 Agricultural Statistics Board notice says USDA’s National Agricultural Statistics Service found a processing error after concerns raised following the October 9 Crop Production report. The error affected September corn plant populations, ear counts, yields and production for Kansas and Nebraska, as well as ten-state averages and U.S. corn yield and production forecasts. NASS says it corrected the affected September material in the Crop Production reports and Quick Stats. The October forecasts published October 9 were reviewed, validated and left unchanged.
Source details and supporting locations.
Practical next step
Readers using the September figures should consult the corrected official reports or Quick Stats rather than rely on older copies.
Limits and what is not established
The notice does not provide replacement numbers or quantify the size of the correction. It explicitly leaves the October forecasts unchanged and is not evidence of a new October forecast or a realized harvest total.
Sources checked October 26, 2026. Later notices may change instructions or arrangements.
Original sources
USDA National Agricultural Statistics Service: original information