Organizing Committee


Poster Presentations


Poster Presentations


Asian soybean rust sentinel plots for Louisiana in 2006

Presenter: C. A. Hollier

All authors and affiliations: C. A. HOLLIER (1), R. Berggren (1), G. B. Padgett (2), R. W. Schneider (1), D. Lanclos (3), D. E. Groth (4), Z.-Y. Chen (1), P. Colyer (5), R. Ferguson (3), A. Hogan (6), H. Wilkerson (7), M. Brashier (8), G. Daniels (9), J. Richard (10), H. Harrison (11), and R. Parish (12). (1) LSU AgCenter, Department of Plant Pathology and Crop Physiology, Baton Rouge, LA; (2) LSU AgCenter, Winnsboro Research Station, Winnsboro, LA; (3) LSU AgCenter, Dean Lee Research Station, Alexandria, LA; (4) LSU AgCenter, Rice Research Station, Crowley, LA; (5) LSU AgCenter, Red River Research Station, Bossier City, LA; (6) LSU AgCenter, Jefferson Davis Parish, LA; (7) LSU AgCenter, Natchitoches Parish, LA; (8) LSU AgCenter, Pointe Coupee Parish, LA; (9) LSU AgCenter, Concordia Parish, LA; (10) LSU AgCenter, Iberia Research Station, Jeanerette, LA; (11) LSU AgCenter, Washington Parish, LA; and (12) LSU AgCenter, Citrus Research Station, Port Sulphur, LA

Asian soybean rust (ASR), caused by Phakopsora pachyrhizi, was first discovered in North America just south of Baton Rouge, LA, on the Ben Hur Research Farm of the LSU AgCenter. This discovery changed the dynamics of disease management in soybeans throughout the United States but especially in the southern U.S. soybean production area. Scouting for diseases in soybeans has always been emphasized within an integrated disease management system since the beginning of the monoculture of soybeans in the region. Since the beginning of production, several diseases have become very important. Those include, but are not limited to, aerial blight, pod and stem blight, anthracnose, frogeye leaf spot, and Cercospora blight. Scouting techniques have been developed for the diseases so that they could be found easily and dealt with appropriately. The discovery of ASR in the United States required a new method of scouting. The method covered great geographic areas in a short time, which brought about ASR sentinel plots. Louisiana had 15 CSREES-sponsored sentinel plots during the 2006 soybean season. ASR was detected in the first one on July 26, 2006, at Alexandria. Eventually, ASR was found in all sentinel plots except the ones in Plaquemines, Caddo, and Bossier Parishes.

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