Organizing Committee


Poster Presentations


Poster Presentations


Monitoring for Asian soybean rust in Alabama’s Black Belt region

Presenter: Rudy Yates(1)

Other authors and affiliations: Edward Sikora(1), Mary Delaney(2), Dennis Delaney(1). (1)Alabama Cooperative Extension System, AL, U.S.A.; (2)Auburn University, AL, U.S.A.

Four soybean sentinel plots were monitored for Asian soybean rust (ASR) at the Black Belt Research and Extension Center in 2006 and 2007. Commercial soybean fields in Dallas, Hale, Lowndes, Marengo, Montgomery, Perry, Sumter, and Wilcox Counties were also monitored for ASR. Suspect leaf samples were sent for examination to the Plant Diagnostic Laboratory at Auburn University. Farmers were informed about the monitoring and movement of ASR through various means, including meetings, telephone conversations, the Auburn University Soybean Rust Hotline, and the USDA National Soybean Rust Sentinel and Monitoring Network website. In 2006, ASR was found only in Sumter County in the Black Belt region. The disease was detected in a commercial field after harvest had been completed. As a result of the monitoring efforts for ASR in 2006, Black Belt soybean farmers did not have to spray over 12,000 acres of soybeans for the disease, thus saving more than $180 thousand in fungicide application costs. In 2007, ASR was found in three commercial soybean fields in Marengo, Sumter, and Lowndes Counties. The disease was also detected on kudzu in Montgomery and Wilcox Counties. Because ASR was found relatively early in the season, area soybeans were at risk for economic damage. Farmers were alerted to its presence and updated on the multiple fungicides available. Farmers could then make informed management decisions on whether to apply fungicides to more than 13,000 acres of soybeans based on the physiological stage of their crop and their crop’s yield potential.

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