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Issue No. 4/April 21, 2006

Plant Clinic Opening
The University of Illinois Plant Clinic, which tests samples (for a fee) for diagnosis, opens for the season on May 1.

U of I Announces 2006 Field Days
The schedule of this year's field days is detailed.

Intense Black Cutworm Flights in Central and Northern Illinois
With black cutworm flights continuing across the state, growers are encouraged to scout emerging cornfields for larval injury.

Insect News Around Illinois
Reports of alfalfa weevils are starting to increase; aphids have been found in alfalfa; true armyworm larvae have been found in some wheat fields.

Time to Sample for Corn Nematodes
Two characteristics increase the likelihood of a corn nematode problem: use of no-till practices and continuous corn planting.

Control Existing Vegetation Before Planting
Early-emerging weeds can interfere with planting and crop establishment. Guidelines are reviewed for controlling existing vegetation before planting no-till corn or soybeans.

Is That What I Think It Is?
There can be important differences between generic and private brand herbicide products; how to distinguish them is spelled out.

What's in That Premix?
Commercial herbicide premix products for corn and soybean are listed, along with their components, an application rate for each premix, and instructions for calculating other rates.

Use Caution When Preplanting Anhydrous Ammonia and/or Using Urea in Starter
To minimize the risk of damage to crop growth, keep anhydrous ammonia and urea-containing products away from the seed and rooting zone of small plants.

Soybean Planting Considerations
Because the drop in yield with delayed planting begins earlier for corn than for soybean and accelerates at a faster rate, it makes sense to completing corn planting first.

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