Organizing Committee


Poster Presentations


Poster Presentations


2007 Asian soybean rust distribution in Mississippi: Seasonal monitoring and recommendations

Presenter: Tom W. Allen(1)

Other authors and affiliations: William F. Moore(2), Alan Henn(2), Lee Taylor(3), Andy R. Milling(3), Ben L. Spinks(3), Malcolm L. Broome(3), Clarissa Balbalian(2). (1)Mississippi State University, Delta Research and Extension Center, Stoneville, MS 38776, U.S.A.; (2)Mississippi State University, Entomology and Plant Pathology, Starkville, MS 39762, U.S.A.; (3)Mississippi State University, Extension Service, MS, U.S.A.

Asian soybean rust (ASR) was first detected in the continental United States in November 2004 in Louisiana and since then has been identified in 18 additional states. Shortly after the initial report of the disease, ASR was also detected in Mississippi. In 2007, ASR was first detected on kudzu in Wilkinson County, MS. The first detection occurred on July 12, which was 20 days earlier than the first ASR detection in 2006. As of November 12, 2007, ASR had been detected in 24 counties, 22 of those on soybeans. Weather conditions throughout much of the growing season were hot and dry, considered to be unfavorable for the development of this disease. However, following this period of hot, dry weather, ASR was identified in Washington and Sunflower Counties. Throughout the growing season, surveys for rust were conducted in the 20 sentinel plots located across Mississippi, and when rust was identified, sentinel plots were destroyed. In addition to weekly monitoring of the sentinel system, more than 275 unique locations were scouted statewide. These included kudzu patches and production soybean fields. The presence of ASR was confirmed by both morphological characteristics and QuickStix soybean rust test kits. Timely recommendations to farmers were broadly disseminated through the soybean rust hotline, jointly sponsored by the Mississippi Soybean Promotion Board and BASF. The soybean rust hotline also provides information from Arkansas and Louisiana and has been an integral method in disseminating information to producers across the state.

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