VINEYARD HEALTHTIPS FOR EFFECTIVE MEALYBUG MANAGEMENT

摘要

THE MOVEMENT of vine mealybug typically starts from the lower vine sections underneath the bark of the trunk, where they commonly reside during winter. During early spring in California's San Joaquin Valley (SJV), there can be new eggs hatching underneath the bark, not often seen by vineyard managers until the population increases and starts to move up from trunk to the cordon and shoots.Rather than a complete movement of the whole population up the trunk, it is better to consider that the population increases in spring and early summer. Much of the next generation moves to the leaves and clusters as the vine matures. Growers notice thehoney-dew and sooty molds when the mealybug has already fed on the leaves and clusters.