Corn and soybean planting fell behind the five-year averages in the latest week as plenty of rain sidelined planters.

USDA said 47% of the corn and 14% of the soybean were planted. Illinois reported .6 day suitable for fieldwork as the state average nearly 2 inches of rain last week. In addition, it was cold with the average temperature 51.4 degrees Fahrenheit, 6.5 degrees below normal.

Iowa was a little better with 3.4 days of fieldwork, with dry weather late in the week allowed farmers in the fields by the weekend.

“Fifty two percent of the corn crop has been planted, remaining over a week behind last year, and slightly behind the five-year average. Northeast Iowa has the smallest percentage of corn planted at 35%, while central Iowa has the most planted at 65%,” the state said.

Seven percent of Iowa’s corn was emerged, compared with 25% a year ago and the 15% average.

Illinois corn planting went to 65% from last week’s 63%, but topped the five-year average of 63%. Emergence was 29% versus the 32% average.

“Producers reported some ponding and flooding in fields,” Illinois said. “Precipitation averaged 1.89 inches, 0.92 inch above normal. Topsoil moisture supply was rated at 41 percent adequate and 59 percent surplus.”

Nebraska corn was 48% planted and 10% emerged, compared with averages of 55% and 15%.

The national winter wheat condition rating dropped 1 point to 53% good/excellent, but declines were bigger in Kansas where a spring storm hit parts of the state.

Kansas said the impact on the wheat of the cold and snow a week ago was still being assessed. The state’s wheat rating dropped to 43% good to excellent, down from 49% a week ago. Oklahoma’s wheat improved with a rating of 49% good/excellent, compared with last week’s 47%

“Winter wheat yield potential dropped last week, with big losses seen in Kansas and Illinois, two states hit hard by rain and snow,” said Bryce Knorr, Farm Futures senior grain analyst. “Kansas yield potential slipped 3.8 bushels per acre to 41 according to our model, with Illinois down 4 bpa to 68.8.”

Illinois wheat was rated 60% good/excellent this week, down from 72% a week ago.

Knorr said the U.S. average wheat yield potential declined .2 bpa according to USDA’s national rating, to 46.3 bpa, with the projection based on state-by-state ratings down a full bushel per acre to 48 bpa.

Spring wheat planting reached 54% and emergence 21%, compared with the 60% and 29% averages. North Dakota spring wheat was 45% planted versus the 49% average and 11% emerged versus the 20% average.

“Warm temperatures allowed for significant planting progress and some emergence. Warm temperatures also continued to dry out the soil in parts of southern North Dakota. There were 6.5 days suitable for fieldwork,” the state said. 

Corn planting in North Dakota was at 23% versus the 34% average.