Antibiotic Injections Control Elm Phloem Necrosis in the Urban Ecosystem

Abstract

When nine American and cedar elms showing symptoms of elm phloem necrosis were given repeated injections of tetracycline antibiotics for several years, all treated trees recovered and appeared healthy by 1976. All but one of the untreated checks died. Of 10 severely infected American elms treated only during the summer of 1972, seven died and the other three showed severe symptoms by 1976, indicating that treatments must begin early and must be continued annually.

Citation

Filer, T. H., Jr. 1976. Antibiotic Injections Control Elm Phloem Necrosis in the Urban Ecosystem. In: Trees and Forests for Human Settlements. British Columbia, Canada: United Nations Habitat Forum; Oslo, Norway: 26th IUFRO World Congress. 327-333.