Download or read book Computer Simulation for Integrated Pest Management of Spruce Budworms written by Carroll B. Williams and published by . This book was released on 1982 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: Some field studies of the effects of various insecticides on the spruce budworm (Choristoneura sp.) and their parasites have shown severe suppression of host (budworm) populations and increased parasitism after treatment. Computer simulation using hypothetical models of spruce budworm-parasite systems based on these field data revealed that (1) effective parasites produce greater stability in budworm populations than ineffective ones and are more resistant to changes induced by insecticides; and (2) the level of budworm population suppression in most budworm·parasite systems is not proportional to the amount of insecticide applied. Only high insecticide dosages produce any effect on the budworm population. Cost-benefit analyses showed that very high investments are worthwhile, but moderate investments produce little effect. The study demonstrated that the computer simulation pmcess helps to define kinds of information needed for understanding the budworm-parasite system, and can predict system behavior under varying conditions.

Download or read book Computer Simulation for Integrated Pest Management of Spruce Budworms written by Carrol B. Williams and published by . This book was released on 1982 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Integrated Pest Management Guide written by James P. Linnane and published by . This book was released on 1986 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Programs for computer simulation of a crosscut first furniture rough mill written by R. Bruce Anderson and published by . This book was released on 1985 with total page 596 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Principles of Spruce Budworm Integrated Pest Management electronic Resource written by Canada. Health Canada and published by . This book was released on 2005 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Development of an Integrated Pest Management System for Western Spruce Budworm written by and published by . This book was released on 19?? with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Spruce Budworms Handbook written by Daniel M. Schmitt and published by . This book was released on 1984 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Western Spruce Budworm Management OR WA written by and published by . This book was released on 1989 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Development of an integrated pest management system for the western spruce budworm written by and published by . This book was released on 1979 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Forestry Research West written by and published by . This book was released on 1983 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Integrated Pest Management August 1980 August 1983 written by Jayne T. MacLean and published by . This book was released on 1983 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proposed Cooperative Spruce Budworm Integrated Pest Management Program Environmental Assessment EA B1 1983 Environmental Assessment EA written by and published by . This book was released on 1981 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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Download or read book Communicationes Instituti Forestalis Fenniae written by and published by . This book was released on 1985 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Concepts and Interpreted Examples in Advanced Fuel Modeling written by Robert E. Burgan and published by . This book was released on 1987 with total page 792 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Monthly Catalogue United States Public Documents written by and published by . This book was released on 1983 with total page 1064 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Spruce Budworm in the Eastern United States written by Daniel R. Kucera and published by . This book was released on 1980 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: