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Bark scoring problem grafts in five Douglas-fir seed orchards: a case history



Bark scoring problem grafts in five Douglas-fir seed orchards: a case history



Research Note Pacific Northwest Research Station, USDA Forest Service ( PNW-RN-487): 12 pp.



Grafted seed orchards of Douglas fir (Pseudotsuga menziesii) often suffer tree losses caused by delayed graft incompatibility. Bark scoring (to improve translocation across the graft union) was performed in April, June and August 1983 and 1985 on 379 trees, 5-16 yr old, in 5 seed orchards in western Oregon. Cuts were made with a small chainsaw every 3.1 to 4.3 cm across the defective union. Effects of scoring were assessed in 1984 and 1986.

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Accession: 002034725

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