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Optimum fertilization of hybrid poplar plantations in coastal British Columbia Zabek, Lisa M.
Abstract
The principles of optimum nutrition were examined in a short-rotation intensive-culture (SRIC) hybrid poplar plantation near Sayward, B.C. One-year-old SRIC hybrid poplar (Populus trichocarpa x P. deltoides) were fertilized with N or NPK applied once, in 3 equal additions, or in 3 incremental additions. Total loading rates were 225 kg N/ha, 75 kg P/ha and 75 kg K/ha. Height and diameter growth increased after fertilization, with NPK generally providing the best response after two growing seasons. Application timing did not affect growth. Two-year-old hybrid poplar were fertilized with N , NP, NPK or NPKS. Total loading rates were 225 kg N/ha, 75 kg P/ha, 75 kg K/ha and 15 kg S/ha. Height and diameter growth were highest after one growing season in trees fertilized with NPKS. One-month-old poplar stecklings were fertilized with 5 nutrient combinations (N, NK, NP, NKP or NKPCaMg) at 4 rates (0, 150, 300 or 450 kg N/ha). Loadings were based on 100N:70K: 13P:7Ca:7Mg. Biomass, leaf area and foliar nutrient concentrations were measured after 17 weeks. Foliar nutrient concentrations and contents increased after fertilization. Additional nutrients, in combination with N , increased steckling biomass, but application rate did not. Growth responses to 5 organic wastes and NPK fertilizer were compared in a second pot bioassay. Biomass, leaf area and foliar nutrient concentrations were measured after 17 weeks. The greatest growth response was to organic wastes, particularly fish-wood compost. Application of these results to SRIC hybrid poplar nutrition are discussed.
Item Metadata
Title |
Optimum fertilization of hybrid poplar plantations in coastal British Columbia
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Creator | |
Publisher |
University of British Columbia
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Date Issued |
1995
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Description |
The principles of optimum nutrition were examined in a short-rotation intensive-culture (SRIC)
hybrid poplar plantation near Sayward, B.C. One-year-old SRIC hybrid poplar (Populus
trichocarpa x P. deltoides) were fertilized with N or NPK applied once, in 3 equal additions, or
in 3 incremental additions. Total loading rates were 225 kg N/ha, 75 kg P/ha and 75 kg K/ha.
Height and diameter growth increased after fertilization, with NPK generally providing the best
response after two growing seasons. Application timing did not affect growth. Two-year-old
hybrid poplar were fertilized with N , NP, NPK or NPKS. Total loading rates were 225 kg N/ha,
75 kg P/ha, 75 kg K/ha and 15 kg S/ha. Height and diameter growth were highest after one
growing season in trees fertilized with NPKS. One-month-old poplar stecklings were fertilized
with 5 nutrient combinations (N, NK, NP, NKP or NKPCaMg) at 4 rates (0, 150, 300 or 450 kg
N/ha). Loadings were based on 100N:70K: 13P:7Ca:7Mg. Biomass, leaf area and foliar nutrient
concentrations were measured after 17 weeks. Foliar nutrient concentrations and contents
increased after fertilization. Additional nutrients, in combination with N , increased steckling
biomass, but application rate did not. Growth responses to 5 organic wastes and NPK fertilizer
were compared in a second pot bioassay. Biomass, leaf area and foliar nutrient concentrations
were measured after 17 weeks. The greatest growth response was to organic wastes, particularly
fish-wood compost. Application of these results to SRIC hybrid poplar nutrition are discussed.
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Extent |
6467658 bytes
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Genre | |
Type | |
File Format |
application/pdf
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Language |
eng
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Date Available |
2009-01-16
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Provider |
Vancouver : University of British Columbia Library
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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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DOI |
10.14288/1.0075181
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URI | |
Degree | |
Program | |
Affiliation | |
Degree Grantor |
University of British Columbia
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Graduation Date |
1995-05
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Campus | |
Scholarly Level |
Graduate
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Aggregated Source Repository |
DSpace
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Item Media
Item Citations and Data
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.