Fusarium Root Rot
Fusarium root rot, caused by several species of Fusarium, including F. roseum, F. solani, and F. oxysporum, affects seedlings of most conifer species. Douglas -fir and pines are most susceptible to the disease; spruces are less susceptible; cypresses and cedars are relatively resistant.
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Author(s): David W. Johnson, Leon A. LaMadeleine, William J. Bloomberg
Publication: Forest Nursery Pests (1989) - Conifer Diseases