Tree Decay in Our Urban Forests: What Can Be Done About It?. Alex L. Shigo, USDA Northeastern Forest Experiment Station, Durham, NH. Plant Dis. 66:763. This article is in the public domain and not copyrightable. It may be freely reprinted with customary crediting of the source. The American Phytopathological Society, 1982. DOI: 10.1094/PD-66-763.