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Grape Phylloxera: Biology and Management in the Pacific Northwest

Describes the life cycle and injury symptoms of grape phylloxera, Daktulosphaira vitifoliae (Fitch), an aphidlike insect that feeds on grape roots. Discusses strategies for reducing the risk of phylloxera infestation, how to sample vines to confirm the presence of phylloxera, how to monitor the rate of spread, ways to manage a phylloxera-infested vineyard, replanting options, and phylloxera-resistant rootstocks.

EC 1463    Revised June 2009    25 pages
Reviewed:
July 2017

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