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Regional Reports

June 8, 2001
Extension center educators, unit educators, and unit assistants in northern, west-central, east-central, and southern Illinois prepare regional reports to provide more localized insight into pest situations and crop conditions in Illinois. The reports will keep you up to date on situations in field and forage crops as they develop throughout the season. The regions have been defined broadly to include the agricultural statistics districts as designated by the Illinois Agricultural Statistics Service, with slight modifications:

· North (Northwest and Northeast districts, plus Stark and Marshall counties)

· West central (West and West Southwest districts, and Peoria, Woodford, Tazewell, Mason, Menard, and Logan counties from the Central district)

· East central (East and East Southeast districts [except Marion, Clay, Richland, and Lawrence counties], McLean, DeWitt, and Macon counties from the Central district)

· South (Southwest and Southeast districts, and Marion, Clay, Richland, and Lawrence counties from the East Southeast district)

We hope these reports will provide additional benefits for staying current as the season progresses.

East-Central Illinois

Cool conditions have continued to slow crop development and in some cases aggravated other problems. Crop herbicide tolerance is more often a concern during hot, humid weather, but cool conditions have proved to slow down a plant's ability to detoxify some herbicides. Some no-till soybean fields with heavy winter annual cover have been hit hard by cutworms.

With postemergence herbicide applications under way, drift complaints are starting to come in.

Northern Illinois

Cool temperatures and frequent rainfall remained again this week, severely limiting corn and soybean growth. Also, soybeans remain to be planted in far northwest Illinois. Producers are waiting for a rain-free forecast to mow first cutting hay in many areas.

Reports of armyworm infestations continue. However, only a limited number of cornfields and wheat fields warrant treatment.

Some soybean "damping-off" is occurring due to the prolonged cool, wet conditions, delaying emergence.

Southern Illinois

The weather continues to have a major impact on crops and crop tasks. The past week has been relatively cool and moist with frequent rain showers. This has resulted in some delays in soybean planting, spraying, sidedressing, and hay harvest.

Early corn extended leaf height is 50+ inches. Soybeans are slowly trying to grow. Wheat maturity is variable with most at GS 11.2 and a few fields are full yellow. Barley has been harvested. Tobacco is scheduled to be transplanted as soon as soil conditions permit.

The first flight of armyworm is over; the second flight is expected at the end of June to the first week of July. Southwestern corn borer numbers are building with much higher numbers in the southernmost counties (Massac, Pope). SWCB activity lowers as one progresses to the north (Franklin, Effingham Counties). Burrower bugs have been found in high numbers in most crop residue. There are some concerns of plant damage in soybeans.

West-Central Illinois

Wet weather continues across the entire area, with reports of high populations of slugs in some fields.

Armyworm damage has finally slowed down.

Large numbers of corn borer moths have been reported.

As soon as soils dry out sufficiently, some fields will need to be replanted.

The Pest Management and Crop Development Bulletin
Executive Editor: Kevin Steffey, Extension Entomologist

Subscription information: Phone (217) 244-5166 or email
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