Table 1.

Diameter and canopy area of experimental oak trees and preseason gypsy moth egg-mass density at three sites in Maryland and Virginia.

SiteMean bolea diameter (cm)Mean dripline area (m2)Preseason egg masses per ha
Harrisonburg, VA38.7 ±1.454.9 ± 6.316,275 ±2,957
Pomona, MD41.0± 1.258.5 + 3.93,973 ± 963
Vienna, MD36.2 ± 1.577.7 + 6.69,806 ± 3,092
  • Values reported are mean ± SEM

  • a Diameter measured at a height of 1.5 m.