Survival and growth of outplanted Douglas-fir seedlings inoculated with mycorrhizal fungi

Mycorrhizal and nonmycorrhizal container-grown Douglas-fir (Pseudotsugamenziesii (Mirb.) Franco) seedlings were outplanted on dry, burned-over sites in eastern Washington. Prior inoculation of seedlings did not significantly increase survival or height growth, but biomass increment during the first growing season was substantially reduced. New roots of all seedlings became colonized by native mycorrhizal fungi within 5 months after planting.