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Regional Reports

July 6, 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.

Northern Illinois

Most of northern Illinois could benefit from rainfall, as the corn crop will soon be approaching the critical pollination period. As of today, July 3, scattered thunderstorms are occurring with accumulation unknown at press time.

Concerning an insect update, Russ Higgins, IPM Extension educator, reported spider mite damage on V3­V4 soybeans in a small area of soybeans in Grundy County. Stan Eden, Extension educator, Ogle County, reported severe potato leafhopper damage in direct-seeded seedling alfalfa. Producers are encouraged to continue to inspect alfalfa for leafhopper infestations and, if the dry weather continues, scout for spider mites in soybeans. Consistent with the last several weeks, little European corn borer damage has been reported or observed.

Just a reminder: the annual Twilight Weed Control Tour at the U of I, Northern Illinois Agronomy Research Center, Shabbona, will be held next Tuesday evening, July 10, beginning at 5 p.m. Dr. Christy Sprague and others will share some of the results of their ongoing weed science research efforts.

Southern Illinois

Warmer and drier weather has returned. Topsoil moisture is variable across the region; however, much of southeastern Illinois is dry enough to create crop stress.

Favorable temperatures continue to advance crops quickly.

Corn is VT­R2 and regular crop soybeans are R1­R3. Doublecrop soybeans are V1.

Some of the drier areas have made applications to control spider mites. Japanese beetles are still a concern.

SIU Belleville Field Day begins at 9:00 a.m. July 12, 2001.

West-Central Illinois

Continued good growing conditions have existed during the past week. No major pest problems have been identified.

Many cornfields are now in the R1 stage. Soil and temperature conditions are present at this time for adequate pollination and fertilization.

Many soybean fields are in the early reproductive stages and growing well. Most postherbicide applications have been completed. Among the minor problems reported on soybeans are dicamba injury, potato leafhopper, and Japanese beetle in Sangamon County.

Wheat harvest is almost complete, with high yields and good quality reported by most farmers. Straw is being baled and soybean double-cropping is taking place in many of those fields.

Potato leafhopper and Japanese beetle have been reported in some alfalfa fields. Insecticide treatments will probably be needed in some of those fields.

Some farmers are already thinking about 2002 corn and inquiring about the possible application of a dry form of nitrogen this fall.

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

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