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Region 3 | June 26, 2025 | LaSalle

Torey Colburn
tcolburn@farmland.org

Caption: Weed pressures have gotten the upper hand in some soybean fields in the area. Adjustments to post emergence weed control programs are being made to get a handle on these situations.
Caption: Timely herbicide applications are necessary to stay ahead of difficult to control weeds like waterhemp. Fortunately most of the waterhemp in this field was not this tall. This plant is likely to survive the application.
Caption: There is some slight goosenecking in some corn in my area. Roots are showing signs of light to moderate rootworm damage on the goosenecked plants. As beetle emergence gets underway the hope is that the root damage will taper off.
SYNOPSIS

A light shower last weekend and nearly an inch of rain in the first couple of days this week took the edge off for the crop in most of my immediate area. The high temperatures and high humidity are pushing the corn along pretty fast now. Visible plant stress is minimal, especially after the shot of rain we got. Some spotty hail managed to poke a few holes in the beans in certain areas, but the corn is largely unscathed. Most soybean fields have now received their post-emergent herbicide passes—the fields that haven’t are pretty obvious from the road. Farmers and retailers are working diligently to get those taken care of, as we’ll be into corn pollination and fungicide season before we know it.

WHICH OF THE FOLLOWING BEST DESCRIBES CURRENT CONDITIONS IN THIS COUNTY?
Near Normal
WEATHER

Scattered showers seem to be the standard forecast most days. The high temperatures and humidity have pushed heat indexes into the low 100s, making for some uncomfortable field-walking conditions—but the crops don’t seem to mind! Slightly cooler temperatures are on the way…

PRECIPITATION

I received 0.9” at home early this week and some areas around me received another 0.2-0.4” mid week.

FIELD/SOIL CONDITIONS

Soil moisture is adequate to slightly wet at the time of this report.

FIELD ACTIVITIES

The first round of post emergent herbicide applications are nearly wrapped up in soybean fields. Applicators have had to dodge the pop up showers when they can. Corn is rapidly growing now.

SOYBEAN GROWTH STAGE

Most fields I’ve been in are staging at V5-V10 with first flowers starting to show up in the earlier fields.

CORN GROWTH STAGE

Most of the corn I’ve been in is stages from V9-V12 and is anywhere from hip to face high.

WHEAT GROWTH STAGE

The few wheat fields I’ve seen in my area are reaching maturity and will be ready for harvesting the next week or two.

INSECTS

I’ve observed some rootworm damage in corn and the Japanese beetles are beginning to show their presence in the corn and the soybeans. At this point they are more of an annoyance than an agronomic issue.

WEEDS

Waterhemp has been on a full court press in soybeans. By and large, the herbicide programs are holding their own but there are those fields that will be problematic.

DISEASES

Overall, observed disease pressure is low. I’ve seen some very minor Septoria and bacterial blight in soybeans, and mild anthracnose leaf blight in wetter areas of corn. As we get closer to corn pollination, remember that scouting for foliar diseases becomes critical for making informed decisions about whether—or when—a fungicide application is needed.

ABIOTIC ISSUES

Very minor and very spotty hail damage can be seen in some soybeans. Occasionally finding some wind blown, leaning corn if a brief gusty thunderstorm passed through but I haven’t seen any green snap.

COVER CROP INSIGHTS

Soybean fields that had a cereal rye cover crop seemed to get off to a slower start but have done a pretty good job of catching up now. The overall weed pressure in these fields appears to be less than in the beans around them that didn’t have the cover crop.

OTHER

For farmers intending to plant cover crops this fall, be sure to get your seed orders placed with your dealers as soon as possible.

 
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