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No. 01/April 03, 2003

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First Issue for 2003
Starting with the April 4 issue, the Bulletin will be published weekly through mid-August, with a team of Extension specialists and educators keeping readers informed of pest situations and crop development throughout Illinois. Several new members have joined the team since last year. Don't hesitate to contact us with reports from anywhere in Illinois or elsewhere.

Transgenic Corn Rootworm Hybrids: A Promising IPM Tool, Yet Important Concerns Linger
Despite their promise as an IPM tool, transgenic corn rootworm hybrids pose lingering concerns about marketability. A Scientific Advisory Panel has outlined benefits and suggested recommendations for resistance management.

Control of Soil-Inhabiting Insect Pests of Corn
This overview surveys the options currently available to Illinois producers for controlling rootworms, cutworms, white grubs, and wireworms with insecticides and insecticidal seed treatments.

Baiting for Wireworms
The procedure for placing solar bait stations for wireworms remains essentially unchanged, with the exception of two additional product options.

First Black Cutworm Moth Capture of the Season
One black cutworm moth has been found in each of two upland traps in Massac and Pope Counties. Predictions of cutting dates won't begin until nine or more moths are captured within two days.

Little Activity Expected from Corn Flea Beetles
Because the average temperature of December, January, and February was low enough, little flea beetle activity is expected throughout much of Illinois.

Keep an Eye Out for Alfalfa Weevils
Alfalfa weevils generally become active when temperatures exceed 48 degrees Fahrenheit, usually in late March and April in southern Illinois. We suggest scouting begin when 250 to 300 degree-days accumulate. As temperatures increase, accumulations will occur quickly; people in areas near Belleville, Dixon Springs, and Carbondale should begin to spot-check for alfalfa weevils soon.

New Products for Insect Control
Empower, Herculex I Insect Protection, and Mustang Max have been labeled for insect control in recent months. Brief discussions and abridged label information are presented for these new products.

Corrections for the 2003 Illinois Agronomy Handbook and Illinois Agricultural Pest Management Handbook
A correction for use rates for Lumax needs to be made to the 23rd edition of the Illinois Agronomy Handbook and the 2003 Illinois Agricultural Pest Management Handbook.

New Herbicides and Label Changes for 2003
An overview is presented of label changes and recently registered weed control products for use in field crops:
  • BASF: Distinct 70WDG (diflufenzopyr + dicamba); Extreme 2.17L (imazethapyr + glyphosate); G-Max Lite 5L (dimethenamid-P + atrazine); Prowl 3.3EC (pendimethalin); Raptor IS (imazamox); Scepter 70DG (imazaquin)
  • Bayer CropScience: Option 35WDG (foramsulfuron)
  • Dow Agrosciences: Warrant 5.4L (glyphosate); Keystone 5.25SE (acetochlor + atrazine); Keystone LA 5.5SE (acetochlor + atrazine)
  • DuPont: Cinch 7.64EC (S-metolachlor); Cimarron 60DF (metsulfuron); Steadfast 75WDG (nicosulfuron + rimsulfuron)
  • FMC: Aim EW 1.9EW (cargentrazone); Spartan 75DWG (sulfentrazone)
  • Monsanto: Roundup WeatherMax 5.5L (glyphosate); Yukon 67.5WDG (halosulfuron + dicamba)
    Syngenta Crop Protection: Callisto 4SC (mesotrione); Lumax 3.95L (S-metolachlor + mesotrione + atrazine)
  • Valent: Gangster (flumioxazin + cloransulam-methyl); Phoenix 2EC (lactofen)

Too Early to Plant Corn?

The Pest Management and Crop Development Bulletin
Executive Editor: Kevin Steffey, Extension Entomologist

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