Location: Horticultural Crops ResearchTitle: Improving management of grape powdery mildew with new tools and knowledge
|Mahaffee, Walter - Walt|
|SCHWEBS, SETH - Coastal Viticultural Consultants|
|HAND, FRANCESCA - Ohio University|
|GUBLER, DOUG - University Of California|
|BAILY, BRIAN - University Of Utah|
|STOLL, ROB - University Of Utah|
Submitted to: Practical Winery and Vineyards
Publication Type: Review Article
Publication Acceptance Date: 4/1/2014
Publication Date: 5/1/2014
Citation: Mahaffee, W.F., Schwebs, S., Hand, F., Gubler, D., Baily, B., Stoll, R. 2014. Improving management of grape powdery mildew with new tools and knowledge. Practical Winery and Vineyards. April:59-67.
Technical Abstract: The assumption that inoculum of the grape powdery mildew pathogen is always available once conditions are suitable for inoculum release has been shown to be incorrect. Using various molecular techniques, we have shown that viticulturist can reduce their fungicide applications, on average, by 2.4 application per year in commercial vineyard trails by monitoring inoculum availability. We have joined with commercial companies to make these techniques available to viticulturists. Combining data with predictive modeling on pathogen dispersion, it will soon be possible to predict the spatial distribution of disease risk over time at the vine level.