Objectives:

• To evaluate the growth and adaptability of local and non-local Douglas-fir families in the Mica seed planning zone.
• To identify genetically superior parents for first-phase seed orchards.
• To estimate components of genetic variance/covariance, heritabilities and genetic gains for traits relating to tree growth, form, adaptability and wood properties.

Experimental Design:

Genetic entries included in test (200 in total)

Layout:

• Randomized complete-block design with 8 replicate blocks.
• The 200 genetic entries were randomly subdivided into 8 sets of 25 entries.
• Sets were randomly assigned to positions in blocks.
• Genetic entries were randomly assigned to four-tree row plots within sets.
• Sampling units are individual trees spaced at 2 x 2 m. White stakes identify set corners.

History:

• 1989 plantations established
• 1991 manual brushing, third-year tree height and condition recorded
• 1994 manual brushing, sixth-year tree height and condition recorded
• 1998
  • tenth-year heights and condition recorded
  • Akolkolex River and Key Road locations brushed
  • Deadman Creek brushed and thinned - discs collected for relative density determination

Status: Active.

Reports and Publications:

Jaquish, B. C. and V.J. Ashley. 1996. Interior Douglas-fir progeny test results and recommendations for first-phase 1.5 generation seed orchards. Progress Report EP 976. B.C. Min. For., Research Branch, Victoria, B.C. 75pp.

Comments:

In 1992, the Spiker's Creek plantation suffered considerable vole damage. In 1995, approximately 20 percent of the Deadman Creek plantation will be lost because of BC Hydro improvements to the Deadman Creek stream channel. 1998 - over 50% of Spikers Creek plantation damaged by porcupine.