Infestation Threatens N.Z. Vineyards

A root-destroying louse has been found in a New Zealand vineyard.

Martin Anderson, president of the Central Otago Winegrowers Association, said an infestation of phylloxera has caused vineyard owners to begin assessing what their management practices should be. Some, he said, will have to replant with phylloxera-resistant root stock.

The phylloxera pest nearly wiped out the European wine industry in the late 1800s. They overcame the threat by importing resistant American rootstocks and graft their vines on to them.

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