In 2018, the prevalence and severity of tar spot increased dramatically and in some areas caused substantial yield losses. Prepare yourself for the coming growing season with these tar spot management suggestions from University of Illinois Extension Plant Pathologist Nathan Kleczewski.
Very early symptoms of many diseases look similar. For example, small yellow flecks may be indicative of several diseases and it can be hard to differentiate them without the presence of more mature lesions (or use of a microscope to examine spores and bacterial streaming).
Under certain conditions, applying a fungicide to corn may provide an economic return. A look at a few key criteria will help in determining whether to apply fungicides or wait things out.
Under certain conditions, applying a fungicide to corn may provide an economic return. A look at few key criteria will help in determining whether to apply fungicides or wait things out.
Bacterial leaf streak disease in corn — new to the U.S. — has been confirmed in several states, University of Nebraska Extension reports. The impact to yield is unclear.
Years of fungicide application research demonstrate that the single best time to apply a fungicide to corn for gray leaf spot control is from VT-R1, says Kansas State University Extension.
Widespread use of conservation tillage favors the survival of the Norther Corn Leaf Blight fungus from year to year and hybrid resistance buildup may also be a problem, says Ohio State University Extension.
The causal agent of Bacterial Stripe disease was confirmed in Champaign County. Although the disease is not new to the U.S., there’s little information on impact to corn yields.
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On this edition of Conservation Ag Update, brought to you by CultivAce, Gregg Sanford, Wisconsin Integrated Cropping Systems Trial manager, reveals how no-till is stacking up to other major systems in year 34 of the trial.
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