Soil survey of Antelope County, Nebraska, by F.A. Hayes...[et al].
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Published: 1921
Total Pages: 0
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Published: 1921
Total Pages: 0
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DOWNLOAD EBOOKAuthor:
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Published: 1925
Total Pages: 1136
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DOWNLOAD EBOOKAuthor: U.S. Office of Experiment Stations
Publisher:
Published: 1926
Total Pages: 1122
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DOWNLOAD EBOOKAuthor: David Moon
Publisher: Cambridge University Press
Published: 2020-04-02
Total Pages: 473
ISBN-13: 1107103606
DOWNLOAD EBOOKExplores the transnational movements of people, plants, agricultural sciences, and techniques from Russia's steppes to North America's Great Plains.
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Published: 1933
Total Pages: 0
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DOWNLOAD EBOOKAuthor: Food and Agriculture Organization of the United Nations
Publisher: Food & Agriculture Org.
Published: 2018-06-07
Total Pages: 409
ISBN-13: 9251079986
DOWNLOAD EBOOKThis 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: Serge Lallemand
Publisher: Springer Science & Business Media
Published: 2009-02-11
Total Pages: 278
ISBN-13: 3540879749
DOWNLOAD EBOOKSubduction is a major process that plays a first-order role in the dynamics of the Earth. The sinking of cold lithosphere into the mantle is thought by many authors to be the most important source of energy for plates driving forces. It also deeply modifies the thermal and chemical structure of the mantle, producing arc volcanism and is responsible for the release of most of the seismic energy on Earth. There has been considerable achievements done during the past decades regarding the complex interactions between the various processes acting in subduction zones. This volume contains a collection of contributions that were presented in June 2007 in Montpellier (France) during a conference that gave a state of the art panorama and discussed the perspectives about "Subduction Zone Geodynamics". The papers included in this special volume offer a unique multidisciplinary picture of the recent research on subduction zones geodynamics. They are organized into five main topics: Subduction zone geodynamics, Seismic tomography and anisotropy, Great subduction zone earthquakes, Seismogenic zone characterization, Continental and ridge subduction processes. Each of the 13 papers collected in the present volume is primarily concerned with one of these topics. However, it is important to highlight that papers always treat more than one topic so that all are related lighting on different aspects of the complex and fascinating subduction zones geodynamics.
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Published: 1930
Total Pages: 0
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DOWNLOAD EBOOKAuthor: Lee Russell McDowell
Publisher: John Wiley & Sons
Published: 2000-10-11
Total Pages: 818
ISBN-13: 0813826306
DOWNLOAD EBOOKVitamins in Animal and Human Nutrition contains concise, up-to-date information on vitamin nutrition for both animals and humans. The author defines these nutrients and describes their fascinating discovery, history and relationship to various diseases and deficiencies. Discussion of vitamins also includes their chemical structure, properties and antagonists; analytical procedures; metabolism; functions; requirements; sources; supplementation and toxicity. Vitamin-like substances, essential fatty acids and vitamin supplementation considerations are also examined. This book will be useful worldwide as a textbook and as an authoritative reference for research and extension specialists, feed manufacturers, teachers, students and others. It provides a well-balanced approach to both animal and clinical human nutrition and compares chemical, metabolic and functional aspects of vitamins and their practical and applied considerations. A unique feature of the book is its description of the implications of vitamin deficiencies and excesses and the conditions that might occur in human and various animal species.