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Region 3 | July 23, 2025 | LaSalle

Torey Colburn
tcolburn@farmland.org

Caption: Soybeans are looking good – R2-R3 in this field.
Caption: Tassel is wrapped up inside the whorl – essentially failing to emerge. Ear stage is R2.
Caption: Blistered ear with missed pollination present.
SYNOPSIS

The area is still behind on moisture, but rains over the weekend have certainly helped reduce some stress during this critical period for both corn and soybeans. Early-planted soybeans are setting pods well so far and can be staged at mid- to late R3 through R4 at this time. Later-planted beans range from mid- to late full bloom (R2) to mid-R3. Most of the corn has pushed into pollination or has completed pollination. Most fields I’ve been in are staging early to mid-blister (R2). Later-planted fields are just starting to tassel and show good silks.

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

A good moisture event over this past weekend is helping to keep plant stress minimized during this week’s intense heat. Corn that is pollinating or moving into grain fill is at a critical point where too much stress may impact kernel set, even with good pollination. In my experience, soybeans tend to handle the heat a little better than corn, and currently, most fields are still too early in pod and seed development to tell how they might be impacted.

PRECIPITATION

My area has received 3-4″ of rain over the last 2 weeks.

FIELD/SOIL CONDITIONS

Good soil moisture in the top 5-7″.

FIELD ACTIVITIES

Fungicide/Insecticide applications are taking place in both soybeans and corn.

SOYBEAN GROWTH STAGE

R2-Early R4

CORN GROWTH STAGE

VT-R2

WHEAT GROWTH STAGE

N/A

INSECTS

Corn Rootworm Beetles, Japanese Beetles, Cloverworms.

WEEDS

Waterhemp escapes are breaking through in some soybeans, some volunteer corn was left uncontrolled.

DISEASES

Septoria is common in the lower canopy of the soybeans. I’m also beginning to see some sporadic downy mildew. I’ve had questions about white mold and sudden death syndrome. I have not seen either of those yet this season, but farmers and advisors should always keep a sharp eye!

Gray leaf spot (GLS), northern corn leaf blight (NCLB), and tar spot were found in most of the corn I’ve been in. Pressures are relatively low, but if previous years are any guide, we should keep a close eye on these as the grain fill period continues.

ABIOTIC ISSUES

I’ve seen some of the tied tassel issues we’ve been hearing about. I can’t speak with any real certainty as to the cause, but it’s likely a combination of environmental conditions, genetics, and possibly even nutrient deficiency. How will it impact yield? It’s too early to say for sure, but I did tear open enough ears to see more missed kernels than I would typically expect.

COVER CROP INSIGHTS

Get your cover crop seed orders in early!!

 
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