Experimenting with Grafted Vines and New Clones in Washington
Rootstocks may be needed to combat nematodes or phylloxera.
Nov 2009 Issue of Wine Business Monthly
Winegrape growers in Washington state primarily grow their grapes on self-rooted vines as phylloxera has not been a difficulty for the state. A small number of growers and researchers have, however, been experimenting with the use of rootstocks as well as new clones According to Marcus Keller of Washington State University, phylloxera was first discovered in the state in 1894 but so far has not spread beyond isolated pockets. “We are not sure why this is, but think it may have to do with ...
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