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Regional Reports

June 7, 2002
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

Soybean planting in most areas is at 95% completion or higher. Northwestern and far northern Illinois received heavy rainfall on June 3 and 4. Rainfall accumulations of 5 to 6 inches or more were common throughout most of the area, with the exception of the southeast portion of northern Illinois, which received 1 inch or less. Some areas of Whiteside, Ogle, and Lee counties reported nearly 8 inches of precipitation. Obviously field ponding is quite common, and most likely some soybean replanting will occur in the future. Corn crazy top should be evident later in the season.

Poor soybean emergence has been reported in early-planted soybeans. Early-planted soybeans have experienced some bean leaf beetle feeding, but there have not been any reports of economic damage.

Most of the wheat has produced heads over the last 10 days. We have received reports of ergot in some cool-season grasses.

West-Central Illinois

Light rain fell Tuesday night in some areas of the region. Most of the corn has now been planted and replanted in the ponded areas. However, there are some bottom areas where planting has just begun that will be switched to soybean. As a result of the recent warm, dry weather, plant emergence has been very rapid. Early-planted corn growth has accelerated dramatically, with some fields in the V4-V6 stages. Post herbicides are being applied to some fields, and supplemental nitrogen is also being applied on parts or all of some fields. There have been several reports of black cutworm damage in newly emerged fields, and some spraying for the problem has occurred. Some wireworm damage has also been observed.

Soybean planting is progressing, and many farmers will finish this week. Plant emergence has been very rapid. Bean leaf beetles can be found in early-planted fields, but there are no reports of insecticide application.

Take special precautions to clean the spray tank when switching from corn to bean herbicides or vice versa. Plant injury can be avoided if the effort is made to thoroughly clean out the tank and spray nozzles.

Wheat has been damaged significantly in the poorly drained areas of some fields. Scab is beginning to appear and may cause yield and quality reductions in this year's crop.

First cutting of alfalfa is in full swing and about 75 percent complete. Potato leafhopper populations will now have to be monitored closely.

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

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