Download or read book Forestry Pesticide Aerial Spraying written by J.J. Picot and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 225 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduced to the technical aspects of forestry aerial spraying in the mid-1970's, we were immediately impressed by the complexity of the process of delivering pesticide to foliage. At that time, there was a vigorous public debate in New Brunswick about the ecological and public h~alth impacts of the annual spray program for the control of defoliation of spruce and fir trees by the spruce budworm. The forest industry is important to the province and changes to the established procedures of budworm control could have major economic implications. A rational debate required reliable information about the mechanics of the spraying process. There was a need to supply missing information as to required pesticide application rates, atomizer performance, off-target drift and deposit, and the effects of weather and aircraft operating factors. We were invited to initiate a research program in this domain by New Brunswick forest management officials, and what follows in this book is a logical and quantitative description of the overall process based on our own research and that of others over the intervening years. After a short introduction to aerial spraying, we begin (Chapter 2) by describing forest stands in terms of their interaction with suspended atmospheric particulate material carried along by the wind and susceptible to deposition on foliage. We introduce foliage simulators and their use in measuring the deposit of sprayed pesticide on foliage, the "biological interface" between pest and pesticide.

Download or read book Special Scientific Report written by and published by . This book was released on 1966 with total page 616 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Lolo National Forest N F Spruce Budworm Suppression written by and published by . This book was released on 1972 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book USDA Forest Service Research Paper RM written by Rocky Mountain Forest and Range Experiment Station (Fort Collins, Colo.) and published by . This book was released on 1968 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ecological Effects of Nuclear War written by G. M. Woodwell and published by . This book was released on 1963 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book U S Forest Service Research Paper RM written by Rocky Mountain Forest and Range Experiment Station (Fort Collins, Colo.) and published by . This book was released on 1967 with total page 542 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book USDA Forest Service Research Paper PSW written by Pacific Southwest Forest and Range Experiment Station (Berkeley, Calif.) and published by . This book was released on 1978 with total page 564 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Sport Fishery Abstracts written by and published by . This book was released on 1959 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Techniques for Monitoring the Effects of Insecticides on Forest Fauna written by Patrick J. Shea and published by . This book was released on 1982 with total page 28 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 1949 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings written by and published by . This book was released on with total page 30 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.

Download or read book Advances in Water Pollution Research written by and published by . This book was released on 1967 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Spruce Budworm Suppression 1974 written by and published by . This book was released on 1974 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Analysis of Ecological Systems State of the Art in Ecological Modelling written by W.K. Lauenroth and published by Elsevier. This book was released on 2013-10-22 with total page 995 pages. Available in PDF, EPUB and Kindle. Book excerpt: The International Society for Ecological Modelling (ISEM) sponsors conferences, workshops and training courses with the aim of advancing the development of ecological and environmental modelling. The 3rd International Conference on the state-of-the-art in ecological modelling was sponsored by the ISEM in cooperation with the National Park Service Water Resources Laboratory and hosted by the Natural Resource Ecology Laboratory at Colorado State University. Its theme was the application of ecological modelling to environmental management and this book contains the full texts of the three invited papers presented in the five general sessions, plus the final summaries and syntheses of the topics covered during those sessions.

Download or read book Bibliography of Agriculture written by and published by . This book was released on 1959 with total page 1196 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Woody Points written by and published by . This book was released on 1985 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: