WA Wine | WAVEx Webinar | April 20, 2023 | To Fumigate or Not?

Dr. Michelle Moyer, WSU Extension viticulture specialist, will share details and insights of recently completed research studying nematode management in Washington wine grape vineyards under replanting scenarios. Her research, supported by the Washington wine industry, was initiated more than a decade ago to help prepare growers for the eventual need to replant vineyards in soils with plant parasitic nematodes. Although nematodes have been well studied in other wine grape growing regions, little was known about the species and population densities of nematodes in Washington. Moyer will share outcomes of her project, including the  long-term effectiveness of soil fumigation to control northern root-knot and dagger nematodes and the effects of using nematode resistant rootstocks.