WASHINGTON, July 26 (UPI) -- The U.S. Department of Agriculture said Monday corn silking progressed at a rapid clip last week.

A week ago, 65 percent of the U.S. crop was reported to be in the silking stage. In the week ending July 25, a full 84 percent of the crop had progressed that far, the USDA said.

Field conditions for corn were largely unchanged in the week however. The USDA said 70 percent of the corn crop was in good to excellent shape. An additional 22 percent was listed in fair shape.

The USDA said 75 percent of the soybean crop had reached or passed the bloom stage, slightly ahead of the crop's five-year average.

Sixty-seven percent of the soybean crop is listed as in very good or excellent shape and an additional 25 percent is listed in fair shape.

The winter wheat harvest is 79 percent complete, 3 percentage points behind the historic average for the crop. The spring wheat crop is 94 percent headed out, 3 percentage points behind that crop's five-year average.