Susceptibility of Pacific Northwest Conifers to Phytophthora Root Rot


Seedlings of 11 conifer species were inoculated with 5 species of Phytophthora-P. cactorum (Lebert & Cohn) J. Schroet., P. cryptogea Pethybr. & Lafferty, P. drechsleri Tucker, P. megasperma Drechsler, and P. pseudotsugae Hamm & E.M. Hansen—to determine susceptibility to phytophthora root rot. Pine, cedar, iarch, and spruce species showed tolerance to the disease whereas some true fir and hemlock species were quite susceptible. Other species showed intermediate susceptibility. Management of phytophthora root rot is discussed, utilizing this information on relative susceptibility of various conifers grown in the Pacific Northwest. Tree Planters' Notes 40(1) :15-18; 1989.
PDF details
Publication Tree Planters' Notes
Section General
Author Sally J. Campbell, Philip B. Hamm
Published 1989/01/15
Volume 40
Number 1
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