An Economic Analysis of Level Bench Systems for Forage Production in North Dakota (Classic Reprint) PDF Download
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Author: Wallace McMartin Publisher: Forgotten Books ISBN: 9781390362848 Category : Business & Economics Languages : en Pages : 36
Book Description
Excerpt from An Economic Analysis of Level Bench Systems for Forage Production in North Dakota The use of level benches can more than double alfalfa production, increase brome grass yield by almost 75 percent, and increase wheat yields by 5 or 6 bushels per acre over the yields produced on natural slopes. The increased yields are largely the result of the benches' ability to hold snow and snowmelt water. Benches, though similar to terraces, are much wider, level overall, and diked at the ends and front. Not enough benches are in actual farm use to provide cost and return data. Limited tests and experience elsewhere show that cost of bench construction is mainly affected by width of bench and complexity of slope. The cost per acre for construction may range from $25 for the narrowest benches on the gen tlest slopes to $353 for 70-foot benches on lo-percent slopes. Operating costs would be higher on a level bench system than on a natural slope, because each bench and its contributing area (an unter raced area above the bench), if there was one, would be treated as a single field for harvest ing and other operations. However, data on the increase in costs are fragmentary and some of the values were estimated. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Author: Wallace McMartin Publisher: Forgotten Books ISBN: 9781390362848 Category : Business & Economics Languages : en Pages : 36
Book Description
Excerpt from An Economic Analysis of Level Bench Systems for Forage Production in North Dakota The use of level benches can more than double alfalfa production, increase brome grass yield by almost 75 percent, and increase wheat yields by 5 or 6 bushels per acre over the yields produced on natural slopes. The increased yields are largely the result of the benches' ability to hold snow and snowmelt water. Benches, though similar to terraces, are much wider, level overall, and diked at the ends and front. Not enough benches are in actual farm use to provide cost and return data. Limited tests and experience elsewhere show that cost of bench construction is mainly affected by width of bench and complexity of slope. The cost per acre for construction may range from $25 for the narrowest benches on the gen tlest slopes to $353 for 70-foot benches on lo-percent slopes. Operating costs would be higher on a level bench system than on a natural slope, because each bench and its contributing area (an unter raced area above the bench), if there was one, would be treated as a single field for harvest ing and other operations. However, data on the increase in costs are fragmentary and some of the values were estimated. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Author: Food and Agriculture Organization of the United Nations Publisher: Food & Agriculture Org. ISBN: 9251079986 Category : Political Science Languages : en Pages : 409
Book Description
This publication presents the latest research in perennial crop breeding and programmes, and provides direction on where the field of perennial crop is heading. Many production systems and agricultural practices are no longer sustainable today as their effects on soils, water, biodiversity, and livelihood are significant. Mainstreaming the use of perennial crops into current practices can contribute to stabilize fragile soils and maintain natural processes essential to obtain stable and high yields. To face the challenges and risks of the twenty-first century, increasing the perenniality of crops and agricultural systems should become a larger research, development and policy focus.
Author: Thomas H. Tietenberg Publisher: Routledge ISBN: 1351803360 Category : Business & Economics Languages : en Pages : 779
Book Description
Environmental and Natural Resource Economics is the best-selling text for natural resource economics and environmental economics courses, offering a policy-oriented approach and introducing economic theory and empirical work from the field. Students will leave the course with a global perspective of both environmental and natural resource economics and how they interact. Complemented by a number of case studies showing how underlying economic principles provided the foundation for specific environmental and resource policies, this key text highlights what can be learned from the actual experience. This new, 11th edition includes updated data, a number of new studies and brings a more international focus to the subject. Key features include: Extensive coverage of the major issues including climate change, air and water pollution, sustainable development, and environmental justice. Dedicated chapters on a full range of resources including water, land, forests, fisheries, and recyclables. Introductions to the theory and method of environmental economics including externalities, benefit-cost analysis, valuation methods, and ecosystem goods and services. Boxed ‘Examples’ and ‘Debates’ throughout the text which highlight global examples and major talking points. The text is fully supported with end-of-chapter summaries, discussion questions, and self-test exercises in the book and multiple-choice questions, simulations, references, slides, and an instructor’s manual on the Companion Website.
Author: A.E. Hall Publisher: Springer Science & Business Media ISBN: 3642673287 Category : Science Languages : en Pages : 357
Book Description
The semi-arid zones of the world are fragile ecosystems which are being sub stantially modified by the activities of mankind. Increasing human populations have resulted in greater demands on semi-arid zones for providing human susten ance and the possibility that this may enhance desertification is a grave concern. These zones are harsh habitats for humans. The famines that resulted from drought during the late 1960's and the 1970's in the African Sahel illustrated the unreliability of present agricultural systems in this zone. Large fluctuations in ag ricultural production have occurred in semi-arid zones of Australia, North Ameri ca, and the Soviet Union due to periodic droughts, even though considerable ag ricultural technology has been devoted to agricultural development in these zones. The challenge to mankind is to manage these different semi-arid zones so that pro ductivity is increased and stabilized, and environmental deterioration is decreased. Irrigation can be used to increase and stabilize agricultural production in semi-arid zones as discussed in Volume 5 of this series, Arid Zone Irrigation. The present volume, Agriculture in Semi-Arid Environments, focuses on dryland farming in semi-arid zones, and is relevant to the large areas of the world where rainfall is limiting and where water is not available for irrigation. This volume is designed to assist agricultural development in these areas and consists of reviews and analyses of available information by scientists working in Africa, Australia, and at the U ni versity of California.
Author: Gary R. Mullen Publisher: Academic Press ISBN: 0080919693 Category : Science Languages : en Pages : 646
Book Description
Medical and Veterinary Entomology, Second Edition, has been fully updated and revised to provide the latest information on developments in entomology relating to public health and veterinary importance. Each chapter is structured with the student in mind, organized by the major headings of Taxonomy, Morphology, Life History, Behavior and Ecology, Public Health and Veterinary Importance, and Prevention and Control. This second edition includes separate chapters devoted to each of the taxonomic groups of insects and arachnids of medical or veterinary concern, including spiders, scorpions, mites, and ticks. Internationally recognized editors Mullen and Durden include extensive coverage of both medical and veterinary entomological importance. This book is designed for teaching and research faculty in medical and veterinary schools that provide a course in vector borne diseases and medical entomology; parasitologists, entomologists, and government scientists responsible for oversight and monitoring of insect vector borne diseases; and medical and veterinary school libraries and libraries at institutions with strong programs in entomology. Follows in the tradition of Herm's Medical and Veterinary Entomology The latest information on developments in entomology relating to public health and veterinary importance Two separate indexes for enhanced searchability: Taxonomic and Subject New to this edition: Three new chapters Morphological Adaptations of Parasitic Arthropods Forensic Entomology Molecular Tools in Medical and Veterinary Entomology 1700 word glossary Appendix of Arthropod-Related Viruses of Medical-Veterinary Importance Numerous new full-color images, illustrations and maps throughout
Author: Wallace McMartin
Author: Wallace McMartin
Author: Wallace McMartin
Author: Wallace McMartin
Author: 
Author: Howard W. Ottoson
Author: William A. Radford
Author: Food and Agriculture Organization of the United Nations
Author: Thomas H. Tietenberg
Author: A.E. Hall
Author: Gary R. Mullen