This annual report contains corn, soybean, wheat, and cotton price reactions to the USDA Crop Production and Grain Stocks reports starting from 1984-89 to the past year. Each year, estimates of corn, soybean, wheat, and cotton production are published in the monthly Crop Production reports. The data contained in this report is organized by year and month, and prior closing price and reactionary prices a day after and week after the release of a report. This report does not imply that NASS reports are solely responsible for changes to the price level for commodities referenced in the publication. The price level for any commodity can potentially be affected by other information available to the market at that time but ultimately is determined by supply and demand.