RHS identify four separate viruses which can obliterate grape crops . Experts say the only way to deal with problem is to pull up plants . Disease spotted on vines at RHS gardens in Wisley , Surrey . The virus has been found in a number of different grapes including Chardonnay and Pinot Noir Can result in reduced yields , delayed fruit ripening and overly-acidic grapes .
RHS identify four separate viruses which can obliterate grape crops . Experts say the only way to deal with problem is to pull up plants . Disease spotted on vines at RHS gardens in Wisley , Surrey . Also found at the National Fruit Collection in Brogdale , Kent . Can result in reduced yields , delayed fruit ripening and overly-acidic grapes .