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Late spring is an excellent time for controlling multiflora rose since herbicide applications at this time generally provide more consistent control than applications made later in the growing season after flowering.
By Forrest W. Nutter, Jr. and Andrew Gougherty, Department of Plant Pathology; Donald Lewis, Department of Entomology
The Japanese beetle [Popillia japonica (Newman)] first detected in Iowa in 1994, was detected for the first time in six additional counties in Iowa in 2010. Reports from all six counties (Audubon, Carroll, Cherokee, Hamilton, Harrison and Ida) were obtained as part of a Bean pod mottle virus/bean leaf beetle survey funded by the Iowa Soybean Association.
By Jim Fawcett, ISU Extension field agronomist
Certified crop advisers (CCAs) can earn five hours of credit (three hours in soil and water management, 1.5 in pest management, and 0.5 in crop management) by attending a special CCA morning session, that proceeds the afternoon spring field day tour at the Southeast Iowa Research and Demonstration Farm near Crawfordsville on June 15.
Predictive Equations of Alfalfa Quality (PEAQ) monitoring shows alfalfa growth and development running about one week behind normal. Those that usually consider first crop harvest on May 25 need not be too concerned with not harvesting yet.
Iowa State University will hold the annual Weed Science Field Day on June 23, 2011.
An updated and revised Soybean Field Guide contains information on soybean production, integrated pest management, diseases, insects and disorders.
Fields at this time are most vulnerable to soil erosion because they lack crop residue cover and the crop canopy is not yet present to protect the soil.
Remembering some important weed management expectations and perspectives will help growers get the highest potential crop yield.
By Roger Elmore, Department of Agronomy
Corn flea beetles have been found feeding on seedling corn in central Iowa. The feeding rarely causes economic damage to established corn, but can sometimes kill corn seedlings with high beetle populations.
