The U.S. Department of Agriculture significantly underestimated corn acreage by 4.5 million acres last year, raising concerns about the reliability of federal agricultural data that markets and policymakers rely on for decision-making.

The Agriculture Department attributed the substantial miss to a decline in survey response rates from farmers rather than budget cuts or staffing reductions. The agency conducts regular surveys to estimate planted acreage and crop production across the United States.

The undercount represents a notable error in the USDA's data collection system, which provides critical information used by commodity markets, agricultural businesses, and government agencies to make economic and policy decisions. Accurate acreage estimates are essential for understanding crop supply and predicting market prices.

Farmer participation in USDA surveys appears to be declining, though the specific reasons for reduced response rates were not detailed in the department's explanation. The agency's ability to collect reliable agricultural data depends on voluntary cooperation from farmers across the country.

The 4.5 million acre discrepancy in corn estimates highlights potential challenges in maintaining the accuracy of federal agricultural statistics as the department works to address survey response issues and ensure data quality going forward.