By Daren Mueller, Department of Plant Pathology and Microbiology, and Clarke McGrath, ISU Extension and Outreach
Integrated Crop Management News
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By Mahdi Al-Kaisi, Department of Agronomy
By Daren Mueller and Erika Saalau, Department of Plant Pathology and Microbiology
Over the past several weeks, we have received several samples in the Plant and Insect Diagnostic Clinic with irregular blotches and necrotic lesions on the pods.
After eliminating all of the known causes, a sample was screened for several common bean viruses*. The sample came back strongly positive for tobacco streak virus (TSV).
By Roger Elmore, Department of Agronomy
Crop conditions across the U.S. Corn Belt varied dramatically in 2013. Iowa was no exception and this year sits in a rare position in terms of yield potential: lower than several other Corn Belt states.
Iowa – 2013 growing conditions
By Alison Robertson, Daren Mueller, Erika Salaau-Rojas and Gary Munkvold, Department of Plant Pathology and Microbiology
An unusual disease has been reported in several fields in southwest and western Iowa over the past couple of weeks. Several samples were received in the Plant Disease and Insect Clinic and pathologists from ISU Extension and Outreach visited a field in Adair County.
Symptoms and signs of the disease
Elwynn Taylor, Iowa State University professor of ag meteorology, gave a production update on Market Journal Television, University of Nebraska – Lincoln, Sept. 6, speaking about Iowa’s corn and soybean crops. Taylor described the difficult growing season for the state’s farmers and how an early frost could impact production. View the eight-minute video here.