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Am. J. Enol. Vitic. 42:3:233-236 (1991)
Copyright © 1991 by the American Society for Enology and Viticulture.
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Comparisons of Hand and Machine Leaf Removal for the Control of Botrytis Bunch Rot

W. D. Gubler 1, L. J. Bettiga 2, and D. Heil 3

1 Department of Plant Pathology, University of California, Davis, CA 95616
2 Monterey County 118 Wilgart Way, Salinas, CA 93901
3 Robert Mondavi Vineyards, 5589 Silverado Trail, Napa, CA 94558.

Basal leaf removal of grapevines has been shown to be effective in controlling Botrytis bunch rot of grapes. A comparison of hand leaf removal with the Nairns Leaf Blower and the Gallagher Leaf Plucker showed both machines to be capable of adequate leaf removal depending on trellis type and disease control resulting from machine leaf removal was generally not significantly different from that achieved as a result of hand leaf removal.

Key words: Vitis vinifera, cultural control, Botrytis cinerea

Submitted on November 28, 1990






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Copyright © 1991 by the American Society for Enology and Viticulture.