FournierBauceDupontbEtAl2010

Référence

Fournier, C., Bauce, E., Dupont, A., Berthiaume, R. (2010) Wood losses and economical threshold of Btk aerial spray operation against spruce budworm. Pest Management Science, 66(3):319-324. (Scopus )

Résumé

BACKGROUND: Spruce budworm, Choristoneura fumiferana (Clem.), causes cumulative defoliation and hence annual growth loss of the balsam fir, Abies balsamea (L.) Mill, host tree. Annual growth increments of mixed balsam fir stands were measured by stem analysis over a 9 year period (1994-2002), when Bacillus thuringiensis ssp. kurstaki (Btk) was applied to control spruce budworm defoliation. With this approach, it was possible to quantify the change in stand volume growth after aerial spray applications of Btk. RESULTS: Differences between the periodic volume increment of protected and unprotected plots were statistically significant, while differences between protected and budworm-free plots were not significant. After 9 years, the difference in periodic increment between protected and unprotected plots was 20 m3 ha-1, and the difference in periodic mortality was 20.5 m3 ha-1. CONCLUSION: An economic assessment of Btk treatments indicates that biopesticide aerial spraying operations are justified, as they prevented substantial balsam fir mortality and growth losses over the 9 year study. © 2009 Society of Chemical Industry.

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@ARTICLE { FournierBauceDupontbEtAl2010,
    AUTHOR = { Fournier, C. and Bauce, E. and Dupont, A. and Berthiaume, R. },
    TITLE = { Wood losses and economical threshold of Btk aerial spray operation against spruce budworm },
    JOURNAL = { Pest Management Science },
    YEAR = { 2010 },
    VOLUME = { 66 },
    PAGES = { 319-324 },
    NUMBER = { 3 },
    ABSTRACT = { BACKGROUND: Spruce budworm, Choristoneura fumiferana (Clem.), causes cumulative defoliation and hence annual growth loss of the balsam fir, Abies balsamea (L.) Mill, host tree. Annual growth increments of mixed balsam fir stands were measured by stem analysis over a 9 year period (1994-2002), when Bacillus thuringiensis ssp. kurstaki (Btk) was applied to control spruce budworm defoliation. With this approach, it was possible to quantify the change in stand volume growth after aerial spray applications of Btk. RESULTS: Differences between the periodic volume increment of protected and unprotected plots were statistically significant, while differences between protected and budworm-free plots were not significant. After 9 years, the difference in periodic increment between protected and unprotected plots was 20 m3 ha-1, and the difference in periodic mortality was 20.5 m3 ha-1. CONCLUSION: An economic assessment of Btk treatments indicates that biopesticide aerial spraying operations are justified, as they prevented substantial balsam fir mortality and growth losses over the 9 year study. © 2009 Society of Chemical Industry. },
    COMMENT = { Export Date: 28 April 2011 Source: Scopus CODEN: PMSCF doi: 10.1002/ps.1878 },
    ISSN = { 1526498X (ISSN) },
    KEYWORDS = { Abies balsamea, Bacillus thuringiensis, Choristoneura fumiferana, Economical analysis, Photosynthetic capacity, Stem analysis, biological control, biopesticide, defoliation, evergreen tree, growth rate, mortality, moth, photosynthesis, stem borer, transgenic plant, air, animal, article, Bacillus thuringiensis, biological pest control, economics, growth, development and aging, Lepidoptera, methodology, microbiology, parasitology, pathogenicity, physiology, spruce, tree, wood, Air, Animals, Bacillus thuringiensis, Lepidoptera, Pest Control, Biological, Picea, Trees, Wood, Abies, Abies balsamea, Bacillus thuringiensis, Choristoneura fumiferana, Picea },
    OWNER = { Luc },
    TIMESTAMP = { 2011.04.28 },
    URL = { http://www.scopus.com/inward/record.url?eid=2-s2.0-76749132161&partnerID=40&md5=d143fe39d95afe640764bf92ff77ad44 },
}

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