Good said large deviations from trend yield occurred in the early-planted years of 1987 (up 8 bushels), 1988 (down 29 bushels), and 1992 (up 16.8 bushels). 

“These yield results are not especially informative for developing expectations about the average yield in 2012,” Good said. “With all else being equal, the planting date may be important for yield potential, but summer weather conditions ultimately determine the level of yields.”

In addition to yield prospects, Good said the expected size of the 2012 crop will be affected by the magnitude of planted and harvested acreage. The USDA will provide survey-based estimates in the Acreage report to be released on June 29.  New-crop corn prices are expected to remain under pressure as long as large crop expectations prevail.