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Abstract / Details
Plantation establishment strategies for hybrid spruce and lodgepole pine on high-elevation sites in wet Cariboo ESSF subzones: 17-year results (EP1021)
Experimental Project 1021 (EP1021) examines a variety of approaches to improving hybrid spruce and lodgepole pine regeneration success in wet Engelmann Spruce - Subalpine Fir (ESSF) biogeoclimatic units of the Cariboo Region. It includes two experiments that were established in 1987 and 1988 on backlog sites that had well-developed herbaceous plant communities. The comprehensive Fontaine study was established at an elevation of approximately 1325 m, on a clearcut site in the ESSFwk1. It examines the response of three hybrid spruce stocktypes (spring-planted PSB 313 1+0, summer-planted PSB 313 2+0, and summer-planted PSB 415 2+0) and one lodgepole pine stocktype (spring-planted PSB 211 1+0) to five site preparation treatments (untreated, scalping, mounding, chemical site preparation, and brown + burn) and two follow-up brushing treatments (unbrushed and chemically brushed 2 years post-planting). We compare conifer responses to site preparation alone (i.e., without follow-up brushing) and brushing alone, and examine the additional survival and growth gains that can be realized by combining site preparation with follow-up chemical brushing. Microclimate data were collected and are used to help interpret survival and growth responses of the two conifer species. The Bosk experiment was established at an elevation of 1660 m, on a clearcut site in the ESSFwc3. In this less comprehensive study, the responses of summer-planted hybrid spruce and lodgepole pine to scalping and mounding are examined.
Newsome, T.A., Heineman, J.L.; Nemec, A.F.L.. 2016. Plantation establishment strategies for hybrid spruce and lodgepole pine on high-elevation sites in wet Cariboo ESSF subzones: 17-year results (EP1021). Forests, Lands, and NR Operations. Technical Report (FLNRORD). TR93