U.S. corn's condition was 73% good to excellent as of Sunday, compared with 72% a week ago and 59% a year ago, USDA said in its latest weekly crop ratings released on Monday.
Corn was 35% dented versus 21% a year ago and the 43% average.
Soybeans slipped to 70% good to excellent from 71% the previous week. A year ago the crop was 58% good to excellent.
The ratings were close to Farm Futures 'sforecasts of 72% good to excellent for corn and 71% for soybeans
In Iowa, the top corn and soybean producer, corn slipped to 75% good to excellent from 76% while soybeans dropped to 73% from 75%.
For U.S. soybeans, 90% were setting pods, ahead of 82% a year ago, and the 89% average. In Iowa, 94% were at pod setting, versus 81% a year ago and the 93% average.
Spring wheat harvest at 27%
Spring wheat harvest was at 27%, compared with 39% a year ago and the 49% average as late-season rain sidelined combines.
In North Dakota, the largest producer, harvest was 10% versus 25% a year ago and the 43% average. An inch of rain fell over most of the state, with some areas in the southwest receiving up to five inches. Although it slowed harvest, the state's spring wheat was rated 80% good to excellent.
The overall U.S. crop slipped to 66% good to excellent, compared with 68% a week ago and 67% a year ago. Washington and Idaho had the greatest percent of wheat in poor condition.
Cotton: 19% bolls open, 51% good to excellent
Bolls were open on 19% of the cotton, compared with 10% a year ago, and the 18% average. The crop was rated 51% good to excellent, down from 50% a week ago and 47% a year ago.
Oats were 74% harvested, compared with 81% a year ago and the 86% average. Sorghum was 34% mature, versus 28% a year ago and the 27% average. It was 58% good to excellent from 59% a week ago and 56% a year ago.
Rice was 11% harvested compared with 13% a year ago and the 17% average. It was rated 74% good to excellent, unchanged from a week ago, and up from 70% a year ago.