Download or read book Conditions in Soils of the Arid Region written by Milton Whitney and published by . This book was released on 1895 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Soils Their Formation Properties Composition and Relations to Climate and Plant Growth in the Humid and Arid Regions written by Eugene Woldemar Hilgard and published by . This book was released on 1906 with total page 640 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Soils of arid regions written by and published by Elsevier. This book was released on 2011-09-22 with total page 251 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soils of arid regions
Download or read book Conditions in Soils of the Arid Region Classic Reprint written by Milton Whitney and published by Forgotten Books. This book was released on 2016-09-27 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Conditions in Soils of the Arid Region It is generally conceded that 20 inches of well-distributed rainfall in Kansas will make an abundant crop of wheat or corn. That there. Must be some rather anomalous condition here is shown by the fact that in much of the humid portion of the eastern United States there has never been so little as 20 inches of annual rainfall within the period of reliable records, and in years of most disastrous drought the rainfall has been greaterthan this. The fact that a crop can be made in Kansas and Nebraska with such a small annual rainfall is particularly striking when it is remembered that, owing to the drier conditions of the atmos phere, evaporation is very much greater there than in the East. There are localities in the West where the total annual rainfall does not exceed 6 or 8 inches. It does not seem possible that with this rainfall under ordinary circumstances crops could be produced by any system of agriculture, unless water were artificially supplied. How ever, it seems possible, outside of these exceptional cases, that with improved methods of cultivation the conditions actually existing can be so utilized as to secure reliable and satisfactory crops. Statistics show that in the humid portion of the United States, hav in g a mean annual rainfall of about 40 inches, 50 per cent ows ofi' into the streams and is of no direct benefit to agriculture. This excess of rainfall reaches the streams partly by owing over the surface of the ground and partly by slow percolation through the soil. Fifty per cent of the rainfall, or 20 inches per annum, evaporates directly from the surface of the soil or is transpired by plants. Practically, therefore, there are about 20 inches of rainfall at the disposal of agricultural plants, and the highest art of cultivation con sists in conserving this moisture, reducing that lost by evaporation from the surface soil to a minimum, and maintaining a sufficient amount at all times at the disposal of crops. There is one factor which has a very important bearing upon the con ditions in the humid as compared with those in the arid regions. In the humid region of the Eastern States the soil is continuously moist from the surface down to a depth at which it is completely saturated and from which water is constantly owing out into wells, streams, and rivers. The water descends through the soil both by virtue of its own Weight and by capillary force. According to capillary laws the water is pulled downward when the subsoil contains less water than the soil. Gravity and capillary force are both more effective in moving water through a moist subsoil than a dry one; hence there is danger in the East of the water being pulled down below the reach of plants in time of drought, while in the West, where the subsoil at the depth of a few feet is continuously dry, this could not happen. 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."
Download or read book Engineering Characteristics of Arid Soils written by P.G. Fookes and published by CRC Press. This book was released on 2020-08-26 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soils formed or now existing under arid climatic conditions cover more than one-third of the world's land surface. Many have unique characteristics which can pose difficult geotechnical problems. This text considers these problems and suggests ways of overcoming them.
Download or read book CONDITIONS IN SOILS OF THE ARI written by Milton 1860 Whitney and published by Wentworth Press. This book was released on 2016-08-25 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Download or read book Management of Problem Soils in Arid Ecosystems written by A. Monem Balba and published by CRC Press. This book was released on 1995-07-14 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: Management of Problem Soils in Arid Ecosystems examines the challenges of managing soils in arid and semiarid regions. These soils contain low organic matter, are not leached, and accumulate lime, gypsum, and/or soluble salts, requiring special management and practices. This book discusses how to identify problems, reclaim the soils, and then use them efficiently and economically. Water management and desertification in these areas are also discussed. It contains extensive references as well as 40 tables and illustrations.
Download or read book Semiarid Lands and Deserts written by J. Skujins and published by CRC Press. This book was released on 1991-04-16 with total page 681 pages. Available in PDF, EPUB and Kindle. Book excerpt: A compendium of current information on arid soils. Provides a comprehensive background of the various soils and biota of arid regions, as well as a detailed account of the current understanding of degradation processes, and includes methodologies for arid land maintenance and rehabilitation and for
Download or read book Reclamation of Arid Lands written by Mohammad Jafari and published by Springer. This book was released on 2018-05-17 with total page 267 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides an overview of arid and semi-arid lands conditions, their general characteristics, methods of management, conservation, exploitation and reclamation. It also focuses on how to utilize the potential of arid lands with the minimum manipulation and alteration. Arid and semi-arid areas represent a major part of natural ecosystems not only in Iran, but around the world, and mismanagement and inappropriate exploitation of these areas may lead to further gradual degradation. As such, an understanding of the characteristics of these areas is vital if they are to be conserved and reclaimed.
Download or read book Soils written by E. W. Hilgard and published by Forgotten Books. This book was released on 2017-10-15 with total page 626 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Soils: Their Formation, Properties, Composition, and Relations to Climate and Plant Growth in the Humid and Arid Regions Chapter I. Physical Processes of Soil Formation. II. Chemical Processes of Soil Formation. III. Chief Soil-forming Minerals. IV. The Various Rocks as soil-formers. V. Minor Mineral Ingredients of Soils. Mineral Fertilizers. Minerals Injurious to Agriculture. 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.
Download or read book Soils written by Eugene Woldemar Hilgard and published by Arkose Press. This book was released on 2015-10-26 with total page 624 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Download or read book Desertification of Arid Lands written by Harold E. Dregne and published by Taylor & Francis. This book was released on 1983 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: First Published in 1983. Routledge is an imprint of Taylor & Francis, an informa company.
Download or read book SOILS THEIR FORMATION PROPERTI written by Eugene W. (Eugene Woldemar) 18 Hilgard and published by Wentworth Press. This book was released on 2016-08-27 with total page 638 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Download or read book Soils Their Formation Properties Composition and Relations to Climate and Plant Growth in the Humid and Arid Regions written by Eugene W 1833-1916 Hilgard and published by Arkose Press. This book was released on 2015-10-24 with total page 640 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Download or read book SOILS THEIR FORMATION PROPERTI written by Eugene Woldemar 1833-1916 Hilgard and published by . This book was released on 2016-08-27 with total page 690 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Arid Zones written by Hilton Kramer and published by Routledge. This book was released on 2017-07-05 with total page 175 pages. Available in PDF, EPUB and Kindle. Book excerpt: The hot and temperate deserts and their marginal steppe lands comprise one-third of the land surface of the world and are an increasingly critical area for the economic wellbeing of world populations. The remarkable mechanisms of floral, faunal, and human adaptation to the distinct and difficult environment of these arid zones, as well as the potential of modern technology for facilitating adaptation, are described and explained by Walton in the light of our most recent knowledge of the phenomena and processes involved.Beginning with a clarification of the definitions of arid and semi-arid regions and with the delineation of techniques for measuring the degree of aridity in these areas, the author shows that there is wide variation among the arid zones in landscape and climate and that there are numerous local and microclimates within any single arid region. The life cycles of the plants and animals of the arid zones are described and the water resources, including problems of salinity, mineral contamination, and the construction of reservoirs, are examined. Extensive treatment is given to potential agricultural adaptations and to pastoralism as the most widespread response to dry land. A final chapter summarizes attempts at adaptation to prevailing drought and discusses the kinds of future development that the author deems most likely in arid zones.Throughout the book emphasis is placed on specific, detailed analysis, with adequate tables and formulas for in-depth understanding of particular aspects of aridity. Examples from both Old and New Worlds are used to demonstrate the spheres in which progress is being made and to show the mistakes in past and present land use in arid areas. An essential supplement for courses in physical geography, the book will be useful in many area studies and in studies of economic development.
Download or read book Arid Land Ecosystems Volume 1 written by R. A. Perry and published by CUP Archive. This book was released on 1979-03-08 with total page 920 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive account of arid-land ecosystems will be of importance to university teachers and professional ecologists throughout the world.
