Title: Tree condition and mortality following defoliation by the gypsy moth
Author: Campbell, Robert W.; Valentine, Harry T.
Source: Res. Pap. NE-236. Upper Darby, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 331 p.
Description: Relationships between expected defoliation and the subsequent condition and mortality rate among the defoliated trees are almost always important factors in deciding if, when, and where to take control action against a defoliator such as the gypsy moth, Porthetria dispar (L. )
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Campbell, Robert W.; Valentine, Harry T. 1972. Tree condition and mortality following defoliation by the gypsy moth. Res. Pap. NE-236. Upper Darby, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 331 p..