Western hemlock seedlings were grown for 8 months in a
greenhouse with fertilizer amendments of N, P, N+P, and
lime. Humus material was used as a growth medium. It was
collected from low-productive sites identified by Lewis
(1985) as the cedar-hemlock phase of the Thuja plicata -
Tsuga heterophylla - Gautheria shallon - Rhytidiadelphusloreus ecosystem association unit designated as S1CH , on his
ecosystem maps of Tree Farm Licences 6 and 25, which are
located on northern Vancouver Island. A combination of 100
kg/ha N and 150 kg/ha P produced the most favourable
seedling growth and foliar nutrient status. N or P added
separately at these rates also gave superior seedling growth
compared to the control. Neither lime, nor high rates of N
(at 300 kg/ha with or without P) increased seedling growth.
High N additions also restricted root development.
N fertilization reduced foliar P concentrations, and P
addition decreased foliar N concentrations. Foliar Mg
concentrations increased when P fertilizers were added. N
and/or P additions caused a decrease in foliar B
concentrations. A combination of N and P increased foliar Zn
concentrations and S, but reduced Mn absorption. Foliar R
was inversely related to seedling productivity.
Management recommendations for the S1CH sites include fertilizing with P, and increasing available N either by cultivation to increase mineralization or by low rates of N fertilization / Land and Food Systems, Faculty of / Graduate
| Identifer | oai:union.ndltd.org:UBC/oai:circle.library.ubc.ca:2429/24872 |
| Date | January 1985 |
| Creators | Newsome, Teresa Hardie |
| Publisher | University of British Columbia |
| Source Sets | University of British Columbia |
| Language | English |
| Detected Language | English |
| Type | Text, Thesis/Dissertation |
| Rights | For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use. |
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