CogliastroGagnonBouchard1993

Référence

Cogliastro, A., Gagnon, D. and Bouchard, A. (1993) Effect of sylvicultural site and treatment on growth, biomass allocation and nitrogen uptake by seedlings of 4 hardwoods in plantations of southeastern Quebec. Canadian Journal of Forest Research, 23(2):199-209.

Résumé

White ash Fraxinus americana, butternut Juglans cinerea, bur oak Quercus macrocarpa and red oak Quercus rubra seedlings were planted on sites typical of glacial tills, littoral sands, and marine clays. Weed control was best with herbicide, resulting in an increase in soil temperature, water content, and nitrate concentration. Seedlings from the herbicide treatment reached a greater height and their leaf biomass was 25% that of the total biomass, and twice as much that of the control. Their root biomass accounted for 35% as compared to 50% for the control. The total amount of leaf N was 10 times greater in the herbicide treatment. Mortality rates were highest for white ash, bur oak, and butternut on sites where water availability was lowest, as well as in the absence of weed control. Red oak mortality was lowest on the littoral sand site. The relative growth rate and net assimilation rate, as well as N use efficiency, were lower on the marine clay site, a high agricultural potential site. Because of a reduction of weed competition in the herbicide treatment, white ash had similar height growth on all sites, whereas bur oak, butternut, and red oak, in particular, grew best on nonexposed sites with light-textured soils. Successful establishment of hardwood seedlings depends strongly on the control of competing herbaceous weeds during the first years of growth in plantation. In SW Quebec, on glacial tills where topography increases water supply through seepage, wind-sheltered sites show a high potential for valuable hardwood reforestation. -from English summary

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@ARTICLE { CogliastroGagnonBouchard1993,
    AUTHOR = { Cogliastro, A. and Gagnon, D. and Bouchard, A. },
    TITLE = { Effect of sylvicultural site and treatment on growth, biomass allocation and nitrogen uptake by seedlings of 4 hardwoods in plantations of southeastern Quebec },
    JOURNAL = { Canadian Journal of Forest Research },
    YEAR = { 1993 },
    VOLUME = { 23 },
    PAGES = { 199-209 },
    NUMBER = { 2 },
    NOTE = { 00455067 (ISSN) Cited By (since 1996): 17 Export Date: 25 April 2007 Source: Scopus Language of Original Document: French },
    ABSTRACT = { White ash Fraxinus americana, butternut Juglans cinerea, bur oak Quercus macrocarpa and red oak Quercus rubra seedlings were planted on sites typical of glacial tills, littoral sands, and marine clays. Weed control was best with herbicide, resulting in an increase in soil temperature, water content, and nitrate concentration. Seedlings from the herbicide treatment reached a greater height and their leaf biomass was 25% that of the total biomass, and twice as much that of the control. Their root biomass accounted for 35% as compared to 50% for the control. The total amount of leaf N was 10 times greater in the herbicide treatment. Mortality rates were highest for white ash, bur oak, and butternut on sites where water availability was lowest, as well as in the absence of weed control. Red oak mortality was lowest on the littoral sand site. The relative growth rate and net assimilation rate, as well as N use efficiency, were lower on the marine clay site, a high agricultural potential site. Because of a reduction of weed competition in the herbicide treatment, white ash had similar height growth on all sites, whereas bur oak, butternut, and red oak, in particular, grew best on nonexposed sites with light-textured soils. Successful establishment of hardwood seedlings depends strongly on the control of competing herbaceous weeds during the first years of growth in plantation. In SW Quebec, on glacial tills where topography increases water supply through seepage, wind-sheltered sites show a high potential for valuable hardwood reforestation. -from English summary },
    KEYWORDS = { ash bur oak butternut oak red oak reforestation white ash Canada, Quebec Fraxinus americana Juglans cinerea Quercus macrocarpa Quercus rubra },
    OWNER = { brugerolles },
    TIMESTAMP = { 2007.12.05 },
}

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