Issue No. 17, Article 5/July 17, 2009
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.
Several showers last week amounted to an inch or more for a large area of the region. Some of the earliest planted corn has begun to tassel this week. As mentioned last week, shorter corn plants in low-lying field areas are growing slowly due to compaction. Potassium deficiency is being observed in some corn fields. Soybeans are growing well, though some fields still need postemergence herbicide. There have been no reports of soybean aphids from extension educators monitoring soybean rust sentinel plots. Some soybean fields have begun to blossom. Japanese beetles can be observed in soybeans, but populations are sparse and well below threshold.
Limited wheat acreage has been harvested in the northern region. Alfalfa regrowth is being treated for potato leafhopper infestations.
Early corn has pollinated or is shooting tassels now and looks good. Gray leaf spot is appearing in some fields and has been found on leaves above the ear. Those parts of fields that were planted when soils were too wet have been able to respond and look much better than just a few weeks ago. The western side of the region has been missing the rains since July 4, and some corn could use another drink; root systems are very compromised in some cases. The eastern side of the region has continued to get frequent rain.
Early beans have been blooming for 10 days or so. They have really taken off the past two weeks. Later-planted beans have a long way to go.
Japanese beetles are starting to become a problem in some areas, and a few fields will likely get sprayed this week.
Wheat harvest is all but complete, and for most the yields were kind of disappointing.
Second cutting of alfalfa harvest has been a real challenge, and finding second-cutting hay without rain will be difficult.
Emergence of male corn rootworm beetles has occurred.