Aug 12, 2011 | View All Issues
We continue to find mainly 1st and 2nd instar grape mealybugs.
In Pope Valley and St. Helena, we found GMB nymphs on leaves, in clusters, and under the bark of the cordon.
At our Oak Knoll sampling site, we did not find GMB nymphs on leaves or in clusters, solely under the bark of the cordon.
Nymphs will move into the clusters to feed and mature. Mature females will then return to the bark to lay eggs, which are the overwintering stage of GMB.
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