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.
Field activity was very limited during the past week, as most of northern Illinois received rainfall on April 24 and 27. Total precipitation ranged from 0.5 inch to 1.5 inches. Some corn planting did occur but on a limited basis. Generally over the past few weeks as fields approached being dry enough to plant, another storm front entered the area. There have been a few reports of corn emergence, but very few reports north of Interstate 80.
Black cutworm moths were caught in a trap located in Lee County, but to date there have been no reports of an intense moth capture.
Wet soil conditions continue to exist throughout the region, with little, if any, planting this past week. Since weather and soil conditions are not promising for the next few days, planting will likely be delayed even more.
Many cornfields planted the week of April 15 are emerged, with seemingly good populations, except for the ponded areas. Those spots will be evaluated when it dries up, with replanting a definite possibility. A light green to yellow plant color indicates a nutrient availability problem at this time. That condition will probably improve as soon as growing conditions become more ideal.
No pest problems have been reported in corn at this time.
Alfalfa weevils are a major problem in most fields. Fields in the southern part of the region are well beyond the threshold levels of three or more per stem and 25% plant skeletonization. Insecticide applications are being made in those fields; be sure to check for the preharvest interval when using any insecticide.
Wheat fields have progressed rapidly, with many fields in the GS 8 stage and flag leaf visible. So far this is little evidence of disease, but that could change quickly if wet weather continues.
Fields with fall-applied herbicides have remained fairly weed free, while others with no herbicide are greening up and will probably require more tillage when it dries up.