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Region 4 | June 27, 2025 | IL

Stephanie Porter
stephanie.porter@ilsoy.org

Caption: Soybeans growth stages progressing quickly with heat and recent rain
Caption: Corn lodging and brace roots forming after blowing over during past wind event
Caption: Septoria brown spot developing on lower soybean leaves
SYNOPSIS

Some areas received between 1″ and 2″ of rain, while others nearby went without. Corn is lodged and forming brace roots after heavy winds. Earlier-planted corn in the area may have experienced greensnap. Recent spotty pop-up showers, along with the heat, were just what the crop needed to make up for previously hindered growth.

Wheat harvest is underway, with some double-crop soybeans hopefully getting planted ahead of forecasted rain. Post-emergence herbicide and sidedress/Y-drop applications are nearly wrapped up, with some beginning to mow roadside ditches.

Corn is at the V9–V12 growth stages, and soybeans are at R1 to R2. Japanese beetles have made their presence known at low levels in both corn and soybeans. Grape colaspis beetles have also been spotted in soybeans. Bacterial blight and Septoria brown spot are present in soybeans.

There are no signs of disease in corn at this time; however, leaf wetness and humidity could signal disease pressure in the future. Farmers are preparing and asking questions about fungicide applications. Many are also scouting for escaped weeds following post-emergence herbicide sprays.

WHICH OF THE FOLLOWING BEST DESCRIBES CURRENT CONDITIONS IN THIS COUNTY?
Mildly Wet (soil is wetter than normal, local vegetation is healthy)
IF CONDITIONS ARE ON THE DRY END, WHICH OF THE FOLLOWING US DROUGHT MONITOR CATEGORIES BEST FIT CURRENT CONDITIONS
Near Normal (Dnada)
WEATHER

95 F, high humidity

PRECIPITATION

Recent spotty pop-up showers brought much needed moisture to some, but not to others.

FIELD/SOIL CONDITIONS

Normal

FIELD ACTIVITIES

Wheat harvest, double crop planting, and mowing roadside ditches

SOYBEAN GROWTH STAGE

R1 – R2

CORN GROWTH STAGE

V9-V12

WHEAT GROWTH STAGE

Harvest

INSECTS

Japanese beetles in both corn and soybeans; Grape colapsis beetles in soybeans

WEEDS

Waterhemp, prickly sida

DISEASES

Bacterial blight and Septoria brown spot in soybeans; no disease yet in corn

ABIOTIC ISSUES

Corn lodged and forming brace roots after wind blew it over; some greensnap