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Issue No. 7/May 20, 2011

Dying Windbreaks? A Few Words from the Plant Clinic
Pine and spruce trees in many windbreaks are showing the effects of two common fungal diseases. Identification and management guidance is outlined.

Schedule of Field Days Set for 2011
Each of the University of Illinois Crop Sciences Research and Education Centers around the state will host a field day between June and September. The schedule is available now; program details will be published in future issues.

Low Numbers of Soybean Aphid Colonies on Buckthorn Confirmed
Few soybean aphid colonies coupled with delayed planting of soybean point to the likelihood of minimal threat from soybean aphids through early summer.

Black Cutworm Scouting Should Be Underway in Central and Southern Illinois
Flights of black cutworm moths the first two weeks of April mean corn growers in central and southern Illinois should be scouting for signs of leaf feeding and cutting.

Yellow Replaces Purple
Yellow rocket and cressleaf groundsel (butterweed) are turning many fields yellow in the southern half of the state.

Can Soil-Residual Corn Herbicides Be Applied After Corn Emergence?
Many, but not all, herbicides typically applied before corn planting or emergency can be applied after emergence as well. An annotated list is provided.

University of Illinois Weed Science Field Research Tours
The annual Weed Science Field Day in Urbana will be held on the morning of Wednesday, June 29. Cost is $10, which includes lunch.

Update on Wheat and Oat Rust Diseases
Guidance is outlined on identifying and controlling stripe rust of wheat and oat crown rust.

Planting Progress and Crop Conditions
The status of Illinois corn, soybean, and wheat crops is detailed.