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Issue No. 9/May 23, 2008

First Reports of Black Cutworm Injury
Whatever the predicted dates for cutting activity in your area, be watchful for early signs of black cutworm larval injury. Adults continue to be captured, so replanted corn will remain subject to threat.

Late Corn Rootworm Larval Hatch Anticipated This Spring
Late hatch of corn rootworm larvae and late planting of corn may delay emergence of corn rootworm adults and the silking and tasseling of corn to the hottest part of summer.

Insecticides and Replanting Decisions
Be aware of label restrictions in thinking about applying a soil insecticide during any replanting of corn.

Weed Control in Corn
Options are detailed for controlling corn emerged from a first planting before replanting to corn.

Stripe Rust of Wheat Found in Illinois
Cool spring temperatures favor the development of stripe rust, which has been found in southern Illinois and can spread to other areas on fungal spores.

Nitrogen and Phosphorus for Wheat
Guidelines are discussed for determining the presence or absence of nitrogen and phosphorus deficiencies and subsequent management actions.

Corn with Issues: Keep, Replant, or Change Crops?
This spring's conditions for corn continue to pose challenges for management decisions.

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