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Management of Insect Pests of Cones in Seed Orchards in Eastern Canada
Jean J. TurgeonPeter De GrootOntario. Ministry of Natural ResourcesCanada. Forestry Canada
出版Ontario, Ministry of Natural Resources, 1992
ISBN07729998649780772999863
URLhttp://books.google.com.hk/books?id=O-jiw1NQk4EC&hl=&source=gbs_api
註釋This guide presents the principle components of seed orchard pest management, the development of a cone crop monitoring system, general guidelines and methods for monitoring, assessing impact, preventing and controlling cone and seed insects, the integration of cone management into a crop management program, and identification of damage caused by cone and seed insects of larch, pine, and spruce.