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Issue No. 5/May 7, 2010

"Refuge-in-the-Bag" Registration Approved by US EPA for Optimum AcreMax 1
US EPA approval of a seed mixture refuge for corn rootworms presents a new chapter, and new questions, in management strategies regarding resistance to Bt corn hybrids.

Black Cutworm Spraying Under Way in Some Central and Southern Illinois Areas
With black cutworm activity reported, carefully scout any cornfields planted late (relative to nearby fields), especially those with an abundance of winter annual weeds and heavy residue.

Timely Applications of Postemergence Corn Herbicides
Though timeliness in application of postemergence herbicides is always preferred, remember that the corn crop and weeds can coexist for some period without resulting in yield loss.

University of Illinois Weed Science Field Research Tours
This summer's U of I Weed Science Field Day will be the morning of Wednesday, June 30, in Urbana-Champaign.

Looking at the Wheat Crop--Again
The 2010 wheat crop, in addition to occupying the smallest acreage since record keeping began, is one of the worst-looking in decades.

Early-Season Soybean Considerations, Scouting, and Counting
Understanding the relationships that contribute to the percentage of soybean plant stands established is key to determining the most appropriate seeding rates.

How Much Salt Is in the Fertilizer?
The salt content of fertilizers and the potential for salt injury to seeds and seedlings are discussed.

Regional Reports
Reports provide snapshots of growing conditions around the state of Illinois.