Impact of Fertility and Fungicides on the Management of Curvularia Leaf Blight. (C05-davis378830-oral)
Authors:
S.D. Davis* - Bayer ES
M.J. Healy - Healy & Associates D.A. Han - Auburn University J.B. Unruh - Universiy of Florida M.A. Fidanza - Penn State Universiy J.K. Goolsby - Indian Bayou CC
Abstract:
The Impact of Fertility and Fungicides on the Management of Curvularia Leaf Blight In 2000, a regional turf disease identification program was implemented to see what key pathogens were contributing to the decline of warm season turf putting green and fairway quality in the Gulf Coast region of the U.S.
Curvularia Leaf Blight, along with Bipolaris sps. and Leptospirulina sps., are found in abundance on both warm-season putting greens and fairways, as well as warm-season turfs overseeded with Perennial ryegrass (Lolium perenne). In addition to the ID program, research and demonstration trials were placed on sites infected with Curvularia sps. Results from multiple field trials show that a combination of nutritional and chemical treatments are necessary to provide curative control of this disease. When applied alone, fungicides or fertilizers provided only marginal improvement, however, when applied in combination, turf quality was dramatically improved. The best treatments included label rates of iprodione and chlorothalonil applied with ureaformaldehyde calcium nitrate, or milorganite. Mancozeb and triticonazole did not provide control and urea appeared to reduce the activity of iprodione and chlorothalonil.
Speaker Information: Steve Davis, Bayer ES, 1118 Seabreeze Lane, Gulf Breeze, FL 32563; Phone:
850-982-3274; E-mail: [email protected]
Session Information: Tuesday, November 4, 2003, 7:30 AM-11:25 AM Presentation Start: 7:30 AM
Keywords: Curvularia Blight; Leaf Blight; Fungicides; Curvularia Leaf Blight
