Friday NASS released an update to the September Crop Production report corn yield. National corn yield was changed (178.8 up from 178.5bpa).
IT DOES NOT CHANGE THE OCTOBER CROP PRODUCTION REPORT 181.2 CORN YIELD.
When a NASS report revision is made downstream reports are not updated until the next regular release.
text of the NASS notice follows...
NASS Corrects September 2026 Corn Data; October 2026 Forecasts Unchanged
After concerns were raised following the October 9, 2026, Crop Production report, NASS found a processing error that affected September corn plant populations, ear counts, yields, and production for Kansas and Nebraska. The error also affected the September 10-state averages for plant populations and ear counts, along with U.S. corn yield and production forecasts.
NASS has corrected the affected September data and forecasts in the Crop Production reports and Quick Stats. The October forecasts published on October 9 were reviewed, validated, and have not changed.