Abstract
Thinned stands of young lodgepole pine (Pinus contorta Dougl. var. latifolia Engelm.) in west-central Alberta had a higher incidence of attack by common pest organisms than unthinned stands. Based on a sample of nearly 3000 potential crop trees (on 240 temporary plots) growing on 120 naturally regenerated cut blocks, the rate of attack in thinned vs. unthinned stands was 30% and 18% for western gall rust (Endo-cronartium harknessii (J.P. Moore) Y. Hiratsuka) and 25%. and 16% for leader damage due to terminal weevil (Pissodes terminalis Hopp.) and pitch twig moth (Petrova spp.) Damage from other agents, including that from small mammals, was low and little affected by thinning. Forest management implication of these results are discussed. Key words: western gall rust terminal weevil, pitch twig moth, snowshoe hares, red squirrels.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
