Color photographs as guides to assessing crown condition of oaks are provided. Use of crown condition for gypsy moth vulnerability rating and silvicultural treatments to minimize gypsy moth impacts are presented.
Gottschalk, Kurt W.; MacFarlane, Russ W. 1993. Photographic guide to crown condition of oaks: use for gypsy moth silviculture. Gen. Tech. Rep. NE-168. Radnor, PA: U. S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 8 p.