EBookClubs

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EBookClubs

Read Books & Download eBooks Full Online

Book Integrated Pest Management Guide

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:

Book Computer Simulation for Integrated Pest Management of Spruce Budworms

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.

Book Integrated Forest Protection Guide

Download or read book Integrated Forest Protection 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:

Book Integrated Pest Management Guide

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 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Managing Trees and Stands Susceptible to Western Spruce Budworm

Download or read book Managing Trees and Stands Susceptible to Western Spruce Budworm written by Martha H. Brookes and published by . This book was released on 1985 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Spruce Budworms Handbook

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:

Book Development of Western Spruce Budworm on Douglas fir Callus Tissue

Download or read book Development of Western Spruce Budworm on Douglas fir Callus Tissue written by Roy C. Beckwith and published by . This book was released on 1991 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Research Paper PNW

Download or read book Research Paper PNW written by and published by . This book was released on 1978 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Western Spruce Budworm Management OR WA

Download or read book Western Spruce Budworm Management OR WA written by and published by . This book was released on 1989 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Spruce Budworm Cooperative Management 1981 1985

Download or read book Spruce Budworm Cooperative Management 1981 1985 written by and published by . This book was released on 1981 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Integrated Pest Impact Assessment System Development

Download or read book Integrated Pest Impact Assessment System Development written by and published by . This book was released on 1986 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Larval Densities and Trends of Insect Species Associated with Spruce Budworms in Buds and Shoots in Oregon and Washington

Download or read book Larval Densities and Trends of Insect Species Associated with Spruce Budworms in Buds and Shoots in Oregon and Washington written by Valentine M. Carolin and published by . This book was released on 1980 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Western Spruce Budworm Management Plan WA OR

Download or read book Western Spruce Budworm Management Plan WA OR written by and published by . This book was released on 1976 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: