Sensitivity of Australian isolates of Plasmopara viticola [grapevine downy mildew] to acylanaline fungicides
1987
Wicks, T. (South Australian Dept. of Agriculture, Adelaide. Northfield Labs.) | Lee, T.C. | Overton, J. (Adelaide Botanic Garden, Adelaide (Australia))
The senitivity of Australian isolates of Plasmopara viticola to 4 acylanaline fungicides, phosethyl-Al and phosphorous acid was tested. Sporulation of all 15 isolates was completely inhibited by 1 mg per L of metalaxyl. Benalaxyl, oxadixyl and ofurace at 10 mg per L and phosethyl-Al and phosphorous acid at 100 mg per L also completely inhibited sporulation of each of the isolates tested for each fungicide. The results indicate that acylanaline-insensitive isolates of P. viticola are either not present or are not widely distributed in grape growing areas of Australia.
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