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Issue No. 8/May 19, 2006

Revised WPS How to Comply Manual
Those subject to compliance with the U.S. EPA Worker Protection Standard are instructed how to procure a copy of the revised How to Comply Manual.

An Inventory of Field Crop Insect Issues in the Midwest
Synopses are provided of a teleconference among extension entomologists from Illinois, Nebraska, and Ohio on Midwest field crop insect issues.

Corn Rootworm Hatch: A Memorial Day Event in Many Years
In the last 10 years, corn rootworm larval hatch has often coincided with the Memorial Day weekend. However, this year's cool weather may push the hatch into early June.

Don't Neglect Scouting of Cornfields for Black Cutworm Injury
Scouting efforts for black cutworm should focus on seedling corn plants as the threat of cutting increases.

Southern Corn Leaf Beetles Observed in Some Areas
Producers in western Illinois should be watchful for southern corn leaf beetles. Details are presented on identification, injury symptoms, life cycle, and control.

Alfalfa Weevils and Natural Control Agents
It is possible that Bathyplectes anurus and Zoophthora phytonomi may suppress alfalfa weevil populations in northern Illinois, keeping numbers below economic thresholds.

Corn Injury and Herbicides
Multiple factors can contribute to the possibility that corn will exhibit injury symptoms following herbicide application. Producers may want to consider allowing corn to recover from the stress of cool air temperatures before applying postemergence herbicides.

The Bane of Socrates--Becoming More Familiar to Illinois Farmers?
Poison hemlock is becoming increasingly common in reduced- and no-till cornfields and soybean fields. Its biology and potential options for its control are detailed.

Stand Issues Following a Wet, Cool Week
Illinois corn planting is 95% complete by mid-May, but soybean planting is starting to lag, with wet and cool conditions providing more negative news. Stand issues for both corn and soybean are outlined.

Regional Reports
Reports are provided this issue for northern, southern, and west-central Illinois.