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Evaluation of Fungicides for Control of Pythium Blight in Overseeded Turfgrasses Using a Simple Field Inoculation Technique

C. M. Stiles, L. E. Datnoff, and J. L. Cisar

March 2005


A simple inoculation technique using small plastic boxes as field inoculation chambers was developed to enhance disease development in turfgrass inoculated with Pythium aphanidermatum. It was used to screen several fungicides for efficacy in controlling Pythium blight. Preventative treatments of azoxystrobin, mefenoxam, and fosetyl-Al were highly effective even under very high disease pressure. Curatively, mefenoxam and azoxystrobin also controlled Pythium blight, if applied as soon as symptoms were detected.


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