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Downy mildew
Downy mildew is a weather driven disease, and is often management by applying eradicant fungicides after infection periods have been forecast. Metalaxyl is a very effective eradicant fungicide, however resistance has been reported in 2005 from some properties in the Hunter Valley Region in NSW. Work is underway in NSW to further investigate the problem.
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First report of metalaxyl resistance of grapevine downy mildew in Australia 2005. Poster presented at APPS conference. (PDF 2.9MB)
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First report of metalaxyl resistance of grapevine downy mildew in Australia 2005. Abstract of poster (PDF)
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International Powdery and Downy Mildew Workshop, California, USA 2002. Report to GWRDC (PDF)
