IntensIve sIlvIculture - Forest Science Labs - Research Network ...

survived and competed with the naturally occurring fungi of the outplanting site. Only one
indigenous type (1/3 ITS ribotype) seemed occurring in the outplanting site where Cenococcum
geophilum was almost completely absent.
48. Beddows, D. 2002. Levels-of-growing-stock cooperative study in Douglas-fir: Report No. 16 -
Sayward Forest and Shawnigan Lake. Pacific-Forestry-Centre, Canadian-Forest-Service
Information-Report BC-X-393. viii + 67 p.
Keywords: thinning
growth
tree morphology
Abstract: Results from the two levels-of-growing-stock installations at Sayward Forest and
Shawnigan Lake on Vancouver Island, British Columbia, Canada, are summarized. Volume
growth at both the site-III Sayward Forest installation to age 51 and the site-IV Shawnigan Lake
installation to age 52 has been strongly related to level of growing stock. Basal area growth
followed a similar, though weaker, trend. Thinning has affected stand development through tree
size distribution and live crown development. Periodic annual increments in volume at both
installations are still two to three times the mean annual increment, indicating the potential for
productivity gains as the treated stands age. Results to date from both installations are similar to
results from other cooperative installations, generally differing from the more productive sites
only in the rate and degree of response associated with a lower site quality.
49. Belz, D. and T.E. Nishimura. 1989. Effects of imazapyr, 2,4-D and metsulfuron methyl on conifer
tolerance. Proceedings-of-the-Western-Society-of-Weed-Science (Vol. 42): 98-104.
Keywords: site preparation
chemical preparation
release treatments
chemical release
tree/stand health
Abstract: Imazapyr at 0.25-1.0 lb/acre alone or 0.5 lb/acre in combination with 2,4-D 2
lb/acre or metsulfuron 0.3 lb/acre was evaluated for effect on growth and injury to Pseudotsuga
menziesii, Pinus ponderosa, Tsuga heterophylla and Abies amabilis seedlings in the Pacific
Northwest region. Applications were made at 4 times: 3 month pre-planting in Dec., as buds
began to swell in Mar., during the spring flush of growth in May, and after bud set in Aug. The
effect of different application rates was of less significance than their timings. Application during
active growth gave unacceptable injury levels; pre-planting caused least injury, but autumn
treatment was acceptable for tolerant species. Species tolerance was in the order Pinus ponderosa
> Pseudotsuga menziesii > T. heterophylla > A. amabilis.
50. Berch, S.M. and A.L. Roth. 1993. Ectomycorrhizae and growth of Douglas-fir seedlings
preinoculated with Rhizopogon vinicolor and outplanted on eastern Vancouver Island. Canadian-
Journal-of-Forest-Research 23(8): 1711-1715.
Keywords: nursery operations
mycorrhizal response
growth
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