الوصف:
Mortality of containerized western white pine seedlings outplanted on the
Bonners Ferry Ranger District, Idaho Panhandle National Forests, was probably
due to extensive root infection by Fusarium oxysporum. Diseased seedlings had
chlorotic foliage, needle tip dieback, and severe twisting of the needles that
indicated wilting. Most root tips of diseased seedlings were necrotic and
colonized with F. oxysporum and Cylindrocarpon sp. First-year outplanting
survival of seedlings varied among the different planting sites.
Recommendations to reduce future losses are discussed.