Objectives:

• To estimate the response potential of selected species to fertilization with nitrogen-sulphur urea.
• To examine the relationship of short-term foliage response to log-term growth response.

Experimental Design:

Treatments:

• At each location two levels of fertilization were tested (0 and 435 kg/ha). The application rate is equivalent to 178.4 kgN/ha. Target species differed with location. In all, four species (lodgepole pine, yellow pine, larch and Douglas fir) were treated.

Layout:

• Mount Sabine, Sheep Creek, Akolkolex River, Champion Creek, Rosebud Lake, Gold Hill.
• The treatments were randomly assigned to 60 single tree plots on a grid of approximately 20 m by 20 m between lines. Thus 30 trees were fertilized at each location.

History:

• 1986 Layout, measure trees, foliage samples and fertilize
• 1987 Foliage samples
• 1989 Remeasure all trees

Status: Dormant

Reports and Publications:
None to date.

Comments:

This project currently has no leader. All queries should be directed to Forest Practices Branch.