Click here for Sept. 22, 2014, USDA crop progress and condition ratings.
U.S. corn's rating was unchanged from a week ago at 74% good to excellent and 4% of the crop was harvested. The harvest matched last year's pace but trailed the 9% five-year average, USDA said in its latest weekly crop ratings released on Monday.
Soybeans were unchanged at 72% good to excellent, while crop development was slightly behind with 24% dropping leaves, unchanged from last year, but behind the 32% average.
In Iowa, the top corn and soybean producer, no corn harvest was reported and the crop was 19% mature versus the 44% average, while 13% of the soybeans were dropping leaves versus the 26% average. Heavy rain there slowed fieldwork .
"Frost was reported across much of the state but caused little damage," Iowa's state report said.
USDA did not post national harvest readings for soybeans, but some harvest was underway with the Mississippi state report showing 29% cut versus the 31% average and Arkansas at 14% cut compared with the 13% average.
Winter wheat 12% planted; Spring wheat 74% harvested
Winter wheat planting advanced to 12% as of Sunday, slightly ahead of the 11% average. Kansas, the largest wheat producer, was 5% planted, which matched the average pace.
Spring wheat harvest advanced to 74% to trail the 86% five-year average. USDA did not provide national condition ratings this week for spring wheat.
In North Dakota, the largest producer, harvest was 65% done versus 86% a year ago and the 84% average, and the crop was rated 15% excellent, 59% good, 20% fair, 5% poor, and 1% very poor.
North Dakota also reported widespread freezing temperatures that affected late-season crop development
The Kansas state report said cold weather produced instances of light frost in the north central and northwest regions. Rain amounts of one-half to 2 inches fell in the north half of the state. Soil moisture improved statewide with topsoil moisture rated 68% adequate to surplus, 24% short and 8% very short, from the previous week's 66%, 25%, and 9%.
Cotton: 6% harvested, 51% had bolls open
The cotton harvest at 6% was ahead of last year's pace but slightly behind the 7% five-year average. Bolls were open on 51% of the crop, compared with 34% a year ago and the 49% average. The crop remained at 49% good to excellent.
Oats were 92% harvested, compared with 99% average. Sorghum was 28% harvested and 45% mature, versus the respective averages of 27% and 37%. It was 57% good to excellent versus 54% a year ago.
Rice was 36% harvested compared with the 45% average and was again rated 74% good to excellent, up from 73% a year ago.