Corn farmers will possible be aware a fungicide accurate as soon as to guard against foliar ailments

Foliar ailments, akin to grey leaf do, northern corn leaf blight, and southern rust, were estimated to trigger annual losses ranging from 19,029 to 244,149 metric plenty from 2012 to 2015 in Kentucky. To mitigate these damages, farmers have modified into to foliar fungicides. On the opposite hand, as plant pathologist Carl Bradley explains, “Kentucky corn farmers had questions regarding the finest timing to have a look at a foliar fungicide to their corn slice.”

To answer to this ask, Bradley and his colleagues at the College of Kentucky established corn fungicide analysis trials at 9 areas at some point soon of Kentucky. They evaluated a single fungicide utility at the six-leaf collar stage (is known as the V6 stage) or at the silking stage (is known as the R1 stage) as properly as a sequential utility at each and every phases. They stumbled on that therapies at the silking stage equipped the finest foliar disease management. They additionally stumbled on that the easiest utility at the silking stage did now no longer vary from the sequential double utility.

“Our findings counsel that Kentucky corn growers possible can rely on a extra tag-effective single fungicide utility at R1 for foliar disease management and enhance return on fungicide investment reasonably than making a few functions at various cases,” mentioned Bradley.

Because the details were composed from field trials performed at 9 areas across two years, Bradley and his colleagues were in a arena to analyze a colossal dataset. “This helped us peep the outcomes of a foliar fungicide on corn across unprecedented of the corn-producing do of Kentucky, which affords unprecedented self belief within the outcomes.”

This analysis is additionally the necessary to show disguise that severity of Curvularia leaf do would possibly perhaps likely even be reduced with a foliar fungicide utility within the U.S. Right here’s a current disease of corn within the do and this discovering is a necessary step toward learning finest management practices.

More details:
Carl A. Bradley et al, Create of Benzovindiflupyr + Azoxystrobin + Propiconazole Fungicide Applied at Assorted Growth Levels on Foliar Disease Severity, Grain Yield, and Economic Relief of Hybrid Corn Grown in Kentucky, Plant Health Development (2020). DOI: 10.1094/PHP-12-19-0099-RS

Supplied by
American Phytopathological Society