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Regional Reports

August 17, 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

Overall, corn looks pretty good. Some fields are showing a significant amount of "firing." Ear checks show a high degree of kernel abortion in these fields.

Large numbers of corn rootworm beetles are present in cornfields and bean fields.

Soybeans are also looking good. Many are a little hole-y from Japanese beetle feeding, and SDS is showing up across the region in scattered patches.

Northern Illinois

Dry conditions continue throughout the region.

Five producers from Lee and Ogle counties brought diseased soybean plants to a recent Ogle County Extension Soybean Cyst Nematode Screening Clinic. Four field samples were diagnosed as sudden death syndrome and one sample as brown stem rot. Also, an additional soybean field sample expressed significant soybean aphid damage. However, no live aphids were observed on the leaves, only aphid skin casts.

Several reports have been received of declining or disappearing spider mite populations in soybean fields.

Southern Illinois

Southern Illinois is enjoying a little relief from the high temperatures that had been common over the past 2 weeks. Rains have continued to be spotty, and most areas could really benefit from a good soaking rainfall.

Corn is quickly completing the season and is R5 to approaching maturity. There may be a very small amount of corn harvested by next week. Soybeans are R4­R5, depending on maturity and planting date. Double-cropped soybeans, although not as far along, have shown good growth.

Soybean sudden death syndrome continues to be a concern. In general, SDS has not progressed as rapidly as might have been expected, but there are some problem fields with significant infestations.

Remember to check out the new weekend AgriLand, August 25­27, 2001, at Du Quoin, Illinois.

West-Central Illinois

Crop conditions have deteriorated rapidly in most areas of the region due to the continuation of warm temperatures and dry soil conditions. Corn and soybean yield estimates are now considered average at best.

The corn crop has stopped progressing and is now drying down prematurely. Farmers have observed a number of fields with poor pollination and poor ear-tip development. Some fields have reached maturity and will be ready to harvest soon. No major pest problems have been reported.

Soybean seed size will be small unless rain comes very soon. Pods on the upper part of the plant will not fill well, and seed size will be very small in those upper pods. Pest problems reported include bean leaf beetle, grasshoppers, Septoria brown spot, spider mites, and SDS.

Potato leafhoppers continue to be a major problem in alfalfa.

Farmers are preparing grain storage facilities for the upcoming harvest.

Upcoming meetings include University of Illinois Field Day, August 23, in Urbana; and Lincoln Land College Field Day, August 24, in Springfield.

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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