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By BUCK KLINE
; • The gypsy moth kills trees.
Indeed it does, but the extent of tree mortality depends on a number ©f interacting factors such as tree 4ge and vigor, the severity of the defoliation and the number of successive defoliations. It is estimated that $bout 20 percent of the oaks severely defoliated during the initial gy psy moth outbreak in Virginia will die. Tree mortality following an outbreak, however, can range from 5-80 percent. Generally, at least 50 percent of a stand of forest trees must Consist of preferred tree species, primarily oaks, before widespread defoliation or tree losses occur.
The gypsy moth is a leaf feeder. By devouring most or all of a tree’s foliage, it forces the tree to produce r^ew leaves in early summer. This reduces the food reserves and weakens the tree.
The gypsy moth attacks all hardwood (deciduous) trees. S, No, several tree species such as black walnut, tulip poplar, ash, dogwood, and sycamore are usually ignored. Oaks are preferred, particularly white oaks, but during outbreaks a wide variety of other vegetation growing in association with oaks, including white pines and hemlock, will be attacked.
The gypsy moth can be managed to reduce its damage.
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