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rapport
L. Husted ; S. Barnes | Victoria, CAN : Forestry Canada - Pacific forestry centre | Forest resource development agreement report n° 142 | 1989Dieback of container-grown Douglas-fir seedlings is caused by a minor root pathogen, Pythium. Possible sources of Phytium in nursery mixes include peat, water, air-borne spores and reuse of contaminated styroblocks. The incidence and severity of[...]
congrès/colloque
rapport
The document contains : - Kinds of mycorrhizae - How to observe root systems for mycorrhizal fungi - Characteristics of mycorrhizal and nonmycorrhiznl short roots - Nursery practices influencing mycorrhizal fungi - Insects and diseases that may [...]
rapport
A. Colangeli ; J. Owens ; S. Morris | Victoria, CAN : Forestry Canada - Pacific forestry centre | Forest resource development agreement report n° 57 | 1989The causes of reduced seed yield in four Douglas fir (Pseudotsuga menziesii Mirb. Franco) trees at the Dewdney Seed Orchard in 1986 were found to be inadequate pollination (30%), low pollen vigor or viability (14%), embryo abortion (14%) and ear[...]
rapport
S. Grossnickle ; J. Arnott ; J. Major | Victoria, CAN : Forestry Canada - Pacific forestry centre | Forest resource development agreement n° 69 | 1989Western hemlock and western red cedar seedlings were grown in a container greenhouse system under four different nursery cultural treatments. A stock quality assessment procedure was developed to characterize a seedling's drought avoidance (i.e.[...]
