Skip to Main Content
Home >> Publications >> How to Differentiate Dutch Elm Disease from Elm Phloem Necrosis

How to Differentiate Dutch Elm Disease from Elm Phloem Necrosis

Dutch elm disease (DED) and elm phloem necrosis are the two most serious diseases of elm in the United States (Figs. 1 and 2). Most native species of elm are susceptible to both diseases. Dutch elm disease is caused by a fungus, Ceratocystis ulmi (Buisman) C. Moreau, and is transmitted by two species of elm bark beetles-the smaller European elm bark beetle, Scolytus multistriatus (Marsham) and the native elm bark beetle, Hylurgopinus rufipes (Eichoff). Elm phloem necrosis is caused by a mycoplasma-like organism and is transmitted by the whitebanded elm leafhopper Scaphoideus luteolus (Van Duzee) (Fig. 3). Both diseases also can be transmitted through root grafts between adjacent trees.

PDF Download: Year of Publication:
2011
ID: 
NA-FB/P-11
Author: 
Gibson, Lester Paul; Hastings, Arthur R.; LeMadeliene, Leon A.
Availability: 
Online
Topic:
Insects and Diseases
How to Differentiate Dutch Elm Disease from Elm Phloem Necrosis
Jump to Top of Page
https://www.fs.usda.gov/naspf/index.php?q=publications/how-differentiate-dutch-elm-disease-elm-phloem-necrosis