Corn and soybean condition ratings slipped this past week amid abundant rain soaked fields, with Indiana reporting significant declines in crop conditions.

Crop Progress 6/15: Corn slips to 73% good/excellent

Winter wheat dropped two points to 41% good to excellent, while harvest advanced to 19%, which trailed last year's 31% and the average of 31%.

Corn was rated 71% good to excellent, down two points from a week ago, and soybeans slipped 2 points to 65% good to excellent, the USDA weekly crop progress report showed on Monday.

In top corn producer Iowa, corn condition slipped to 83% good to excellent from 84% a week ago. Illinois corn dropped to 70% from 76% good to excellent.

Indiana corn/soy conditions tumble; Winter wheat rated 41% good/excellent

In Indiana, corn dropped to 58% good/excellent from the previous week's 73% as rain, hail, flooding and wind damaged fields. Soybeans in that state fell to 58% good to excellent from 71%.

"Flooding was more widespread, and soil moisture surpluses grew across the state, while condition ratings declined, though the full effects of nitrogen loss and missed pest and weed control opportunities won't be known for some time," the Indiana report said of the crops. "Many corn and soybean fields already show signs of distress such as poor color and lodging."

Nationwide, soybeans were 90% planted, behind the 95% last year and the 95% average. Emergence moved to 84%, compared with 89% a year ago and the 87% average.

 "Southwest and south central Iowa have been able to plant less than 80% of their expected soybeans acreage due to continued saturated soil conditions," the Iowa report said.

USDA crop progress and condition wheat ratings >>

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The winter wheat rating dropped 2 points to 41% good to excellent. Harvest advanced to 19%, which was well behind the 31% last year and 31% average.

The Texas wheat harvest was 64% done, compared with 65% a year ago and the 64% average, while Kansas was at 8%, well behind 21% a year ago and the 33% average.

In the central and southern Plains, rain storms and muddy fields slowed the winter wheat harvest. Rain and hail damaged wheat in Texas, and a few areas received 10 to 20 inches of rain.

In Washington, where rain is needed, winter wheat slipped to 41% good to excellent and spring wheat to 52% from the previous week's 43% and 53%.

Nationwide, spring wheat improved slightly to 71% good to excellent from 70%. North Dakota came in a little better at 79% from the previous week's 78%.

Sorghum was 85% planted and 18% headed, compared with 86% and 19% a year ago and the 89% and 21% averages. It improved slightly to 68% good to excellent from 67% .

Cotton squaring was 22% versus the 26% average. It was rated 55% good/excellent, unchanged from last week although excellent was up 2 points and good down 2.

Topsoil moisture was largely adequate to surplus from North Dakota to Texas and throughout the Midwest. The state of Washington, topsoil was rated 49% adequate to surplus and 51% short to very short.