Infested soil also could be exchanged among vineyards at the winery via picking bins during the hectic activities of harvest delivery and crush. Therefore, both vineyards and wineries should take precautions against the movement of potentially infested soil.
Prevention is one of the few weapons for combating phylloxera.
Prevention primarily means restricting movement of people, equipment, and materials among vineyards and thoroughly cleaning all items that come in contact with vineyard soil. All vineyards should be considered potentially phylloxerated . Even grafted vines on resistant rootstocks can support populations of phylloxera and serve as a source of new infestations. A phylloxera infestation usually is not diagnosed until several years after its introduction into the vineyard. Therefore, controlled access and sanitation procedures are important for all vineyards and wineries.