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Issue No. 4/April 27, 2012

2012 Season at the University of Illinois Plant Clinic
From its new location in Turner Hall, the University of Illinois Plant Clinic will resume full-day business hours on April 30. Samples can be personally delivered or sent by mail or other delivery service. Prepayment for service is required.

2012 Field Days Scheduled Around the State
University of Illinois Agronomy Field Days will be held at all Crop Sciences Research and Education Centers from June through September.

World's Worst Agricultural Pests? Some Familiar, Others Not, to Midwest Producers
BBC News asked the chief scientist for the Centre for Agricultural Bioscience International to name the worst plant pests threatening crops around the globe.

Stripe Rust of Wheat Update
Stripe rust of wheat has been seen in southern Illinois; growers there need to scout, as fields are heading and beginning to flower. Scouting is likewise important throughout the state, as the disease will continue moving northward if favorable conditions (cool to moderate temperatures) persist.

Consider Risk of Sudden Death Syndrome When Planting Soybeans Early
Planting soybean early when soil temperatures remain cool increases concern about sudden death syndrome. It is important that the most SDS-resistant varieties be planted in situations that favor the disease.

Is It Time to Plant Soybeans?
In a change from past findings, studies in 2010 and 2011 showed that soybeans suffer little yield loss from planting delays until after the middle of May, with relatively mild losses from planting in late May. So finishing corn planting, then starting in with soybean planting may be sound management, at least after mid-April.

Soybean Row Spacing: Wide or Narrow?
Average row spacing for soybeans has increased in the past decade. Results of recent research comparing 15-inch and 30-inch soybean rows is detailed.

Nutrient Status of the Soil
In the absence of unusually high precipitation from here on, there should not be large potential for nitrogen loss. Though some fields are showing symptoms of nutrient deficiency, they will be temporary if soil has adequate nutrients or has been adequately fertilized.