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Region 4 | July 27, 2023 | Montgomery

Stephanie Porter
stephanie.porter@ilsoy.org

Caption: Very, little sunlight on the ground in corn canopy
Caption: Soybeans at R4
Caption: Tar spot has spread across lower leaf
SYNOPSIS

It was a good sign to see that the corn canopy was collecting as much sunlight as possible with little sunlight hitting the ground. We can’t complain, but would love more rain for corn grainfill. The insecticide application eliminated Japanese beetles and most disease. If you visit field edges where fungicide coverage was a scarce, you will find tar spot on lower leaf and gray leaf spot moving up the plant. Soybeans are hanging in there with no more insect pressure thanks to a recent insecticide application. Septoria brown spot is in the lower canopy.

WHICH OF THE FOLLOWING BEST DESCRIBES CURRENT CONDITIONS IN THIS COUNTY?
Mildly Dry (soil is drier than normal, plant growth may have slowed)
IF CONDITIONS ARE ON THE DRY END, WHICH OF THE FOLLOWING US DROUGHT MONITOR CATEGORIES BEST FIT CURRENT CONDITIONS
Abnormally Dry (D0)
WEATHER

Very, hot

PRECIPITATION

None

FIELD/SOIL CONDITIONS

Dry with cracks

FIELD ACTIVITIES

None

SOYBEAN GROWTH STAGE

R4

CORN GROWTH STAGE

T4

INSECTS

None

WEEDS

Waterhemp escapes in corn

DISEASES

Septoria brown spot in lower canopy in soybeans and tar spot on lower leaf /gray leaf spot moving up the plant on field edges where fungicide did not get good coverage.