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.
With the warm temperatures last week, field activity increased, focusing on corn planting, anhydrous ammonia application, spring tillage, and herbicide application. Rainfall on April 19 through the 21st has stopped most fieldwork, with only very limited activity occurring by April 23.
Dave Feltes, IPM educator, has reported recently hatched alfalfa weevil larvae being observed in southern Rock Island County. Dave also reported that Kevin Foreman, Crop Production Services, caught black cutworm moths in traps last week in Fulton, Knox, Mercer, and Warren counties. Jim Morrison, crop systems educator, caught black cutworm moths in Stephenson County. However, to date, no one has recorded an intense moth capture.
April rainfall and last week's warm temperatures have contributed to good alfalfa and grass pasture growth. There have been no reports of any winter injury to winter wheat or alfalfa.
What a difference a week makes! A significant number of corn acres were planted the week of April 1319, with some farmers finishing corn and beginning with soybean. However, heavy rain last weekend, between 1 and 4 inches, stopped all fieldwork in the region. Ponding damage will be assessed in some fields with possible replanting in those areas.
Corn emergence has been rapid because of the recent warm temperatures. One producer said he has seldom seen April-planted corn emerge in one week.
There have been reports of black cutworm and white grubs in the Quincy area.
Alfalfa weevil has developed rapidly in the last week. Many fields are nearing the treatment threshold, which is 25% of leaf tips skeletonized and three or more larvae per stem.
Wheat is progressing rapidly, also, with some fields approaching flag-leaf development. A few fields are showing a slight yellowing, which some speculate may be barley yellow dwarf disease.