Northwest Iowa Crop Conditions

Cool, dry weather has persisted across this area for more than a week, and the optimal planting window for both corn and soybeans remains open. However, the cool temperatures have slowed seedling development and crop emergence. Planting progress has advanced quickly this week. According to USDA’s May 3 report, Iowa’s corn crop is 44% planted and soybeans are 27% planted, both just slightly behind average. The Northwest region is running well ahead of the state average. At the current pace, I expect most remaining planting to be completed within the next week or so.

The long-range forecast shows a needed warmup beginning this weekend, although rainfall chances remain limited. Some crops have been, or will be, planted into dry soil conditions, so timely rain will be important for uniform emergence and early growth.

The earliest corn planted in this area went in about three weeks ago and is finally emerging this week. Nearly all corn planted so far has experienced less-than-ideal soil temperatures below 50 degrees, including this morning. In some areas, hard rainfall shortly after planting created a soil crust that will make emergence more difficult (especially without a rain). Despite these challenges, I do not expect widespread stand issues in corn at this time.

The limited soybean acres planted during the first half of April have also emerged. Those early beans were exposed to light frost, which can sometimes cause significant injury or plant death. It takes up to a week after a frost event to assess soybean health, so we’ll continue monitoring those fields to determine whether any replanting is needed.

The largest segment of soybeans in this area was just planted this week or will be planted soon. Based on the current forecast, I expect nearly all planting of corn or soybeans to be finished by mid-May, which would still be considered ideal timing.