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 Spruce Budworms Handbook written by and published by . This book was released on 1984 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Spruce Budworms Handbook written by and published by . This book was released on 1986 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Spruce Budworms Handbook written by Steven Allen Sinclair and published by . This book was released on 1984 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Spruce Budworms Handbook written by and published by . This book was released on 1985 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Spruce Budworms Handbook written by Clinton E. Carlson and published by . This book was released on 1989 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Agriculture Handbook written by and published by . This book was released on 1983 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: Set includes revised editions of some nos.
Download or read book Spruce Budworms Handbook written by and published by . This book was released on 1983 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pp. 8.
Download or read book Spruce Budworms Handbook written by and published by . This book was released on 1984 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Spruce Budworms Handbook written by David Alan Tilles and published by . This book was released on 1984 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Spruce Budworms Handbook written by Steven O. Shattuck and published by . This book was released on 1985 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Spruce Budworms Handbook written by and published by . This book was released on 1984 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Spruce Budworms Handbook written by and published by . This book was released on 1986 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Spruce Budworms Handbook written by and published by . This book was released on 1985 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Studies on the Spruce Budworm Cacoecia Fumiferana Clem written by James Malcolm Swaine and published by . This book was released on 1924 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Relationships of Birds and Spruce Budworms written by Hewlette S. Crawford and published by . This book was released on 1982 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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.
