00000nam 2200000zi 4500 9.935598 CaOODSP 20240319103747 m o d f cr mn||||||||| 240319e197312 oncab ob f000 0 eng d CaOODSP eng rda CaOODSP eng eng fre n-cn-on x7x7 Fo64-37/61-1973E-PDF Morris, O. N. (Oswald Nathaniel), 1926- author. Aerial application of Bacillus thuringiensis-fenitrothion combinations against the spruce budworm, Choristoneura fumiferana (Clem.) / by O.N. Morris and J.A. Armstrong. Ottawa, Ontario : Chemical Control Research Institute, December 1973. 1 online resource (10 pages, 14 unnumbered pages) : illustrations, map. text txt rdacontent computer c rdamedia online resource cr rdacarrier Information report, 0704-7711 ; CC-X-61 ISSN of series supplied from ISSN Portal. Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references (pages 9-10). "Mixtures of commercial formulations of Bacillus thuringiensis Berliner + a low dosage of fenitrothion and an operational dosage of fenitrothion were applied to white spruce and balsam fir against the spruce budworm (Choristoneura fumiferana Clem.). The effects of the treatments were assessed 8, 17 and 30 days after treatment. Dipel + the low dosage fenitrothion was effective in reducing the budworm population on balsam fir only; Thuricide + the low dosage fenitrothion and the operational dosage of fenitrothion gave good foliage protection to balsam fir. None of the treatments resulted in a population reduction or foliage protection to white spruce. The egg mass survey at the end of the field season forecast a reducted budworm population on the Thuricide + low dosage fenitrothion plot only. The overall results indiqated that Thuricide + low dosage fenitrothion was effective in protecting the forest trees from excessive defoliation in the year of application and probably in the succeeding year as well"--Abstract. Includes abstracts in English and French. Bacillus thuringiensis Ontario Testing. Fenitrothion Ontario Testing. Spruce budworm Biological control Ontario. Spruce budworm Control Ontario. Aerial spraying and dusting in forestry Ontario. Bacillus thuringiensis Ontario Essais. Fénitrothion Ontario Essais. Tordeuse des bourgeons de l'épinette Lutte biologique contre Ontario. Tordeuse des bourgeons de l'épinette Lutte contre Ontario. Pulvérisation et poudrage aériens en sylviculture Ontario. Chemical Control Research Institute (Canada), issuing body. Report (Chemical Control Research Institute (Canada)) CC-X-61. (CaOODSP)9.931023 PDF 2.74 MB https://publications.gc.ca/collections/collection_2024/eccc/fo64/Fo64-37-61-1973-eng.pdf