Download or read book The Salinity of Nonirrigated Soils in the Lower Rio Grande Valley of Texas Classic Reprint written by D. L. Carter and published by Forgotten Books. This book was released on 2018-03-20 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from The Salinity of Nonirrigated Soils in the Lower Rio Grande Valley of Texas Solution of the salinity problems of a particular area begins with the gathering of as much information as possible about the kinds of salts causing the problem, soluble salt sources, soil properties, the portion of the land affected by salts, water table and drainage conditions, and farm management practices. After such information is obtained, the salinity problem can be properly evaluated. Subsequently, reclamation practices can be formulated and initiated, and farmer management practices can be altered to aid reclamation. 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 The Salinity of Nonirrigated Soils in the Lower Rio Grande Valley of Texas written by David L. Carter and published by . This book was released on 1964 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Salinity of Nonirrigated Soils in the Lower Rio Grande Valley of Texas written by David L. Carter and published by . This book was released on 1964 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Water Table Depth and Ground Water Salinity in the Nonirrigated Area of the Lower Rio Grande Valley of Texas Classic Reprint written by R. R. Allen and published by Forgotten Books. This book was released on 2018-10 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Water Table Depth and Ground Water Salinity in the Nonirrigated Area of the Lower Rio Grande Valley of Texas The water table at the sampling sites was approximately feet deep in February 1959. Crop use and evaporation gradually lowered the water table to 7feet during the summer. 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 Soil Salinity in the Texas Lower Rio Grande Valley written by Marthanne Payne Aleman and published by . This book was released on 1987 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Water Table Depth and Ground Water Salinity in the Nonirrigated Area of the Lower Rio Grande Valley of Texas written by R. R. Allen and published by . This book was released on 1966 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Drainage Situation in the Lower Rio Grande Valley Texas Classic Reprint written by L. L. Hidinger and published by Forgotten Books. This book was released on 2017-10-28 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from The Drainage Situation in the Lower Rio Grande Valley, Texas Companies in the valley, representing an investment of several million dollars. Up to the present time (august, 1909) perhaps acres of land have been cleared, and it is quite probable that between and acres will be in cultivation by the first of 1910. Settlers are constantly arriving in the valley in large numbers, and towns, sugar mills, factories, and houses are being built. The first irrigation Scheme of any magnitude was put in operation about 1902, when the Brownsville Land and Irrigation Company started to grow rice. The yield of the first crop was excellent and a bright future was predicted for the rice industry, but the second crop was not so much of a success. In the growth of rice it is neces sary to keep the ground covered with water several inches in depth; and in order that it might not seep away too fast the low-lying, heavy, clay soils were chosen. These soils contain a large amount of alkali, which was rapidly concentrated at the surface by this method of culture, and it soon became evident that rice could not be profitably grown. No attempt has been made to grow rice since 1906. Since the abandonment of the rice crop, sugar cane, cotton, and truck crops have been extensively grown. The climate of this part of Texas is classed as semitropical and semiarid, in spite of the fact that the average annual rainfall at Brownsville is inches. All irrigation water comes from the Rio Grande. During the early summer months the river is fre quently dry at El Paso, and the mest of the supply for the lower part of the valley must come from the Republic of Mexico. 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 Ground water Resources of the Lower Rio Grande Valley Area Texas Ground water resources of the Lower Rio Grande Valley area Texas written by Roger C. Baker and published by . This book was released on 1961 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Control of Salinity in the Imperial Valley California Classic Reprint written by Leon Bernstein and published by Forgotten Books. This book was released on 2017-10-29 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Control of Salinity in the Imperial Valley, California Ground waters generally contain more salt than irrigation waters. When the ground-water level is close to the surface, a good deal of the salty ground water moves upward as a result of evaporation and plant use. This increases the salt content of the surface soil and may decrease crop growth. 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 Status of Farming in the Lower Rio Grande Irrigated District of Texas Classic Reprint written by Rex Ethan Willard and published by Forgotten Books. This book was released on 2018-02-22 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Status of Farming in the Lower Rio Grande Irrigated District of Texas Artificial drainage by means of surface ditches is being undertaken, particularly in Cameron County. Drainage districts have been formed, and bonds have been issued providing the funds for the ditch construction. The facilities now provided are improving the conditions, and it is only a question of time when artificial drainage will cover practically the whole region. 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 Cotton Physiology written by Jack R. Mauney and published by . This book was released on 1986 with total page 840 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Halophytes as a resource for livestock and for rehabilitation of degraded lands written by V. Squires and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt: Desertification (land degradation in arid, semi-arid and dry sub-humid areas resulting mainly from adverse human impacts) is the main environmental problem of dry lands, which occupy more than 40 per cent of the total global land area. The phenomenon threatens about 3.6 billion hectares and currently affects the livelihood of about 900 million people. Thl! world is now losing annually about 1.5 million hectares of total irrigated lands (240 million hectares) due mostly to salinization, mainly in drylands. Salt affected soils are widely distributed throughout the arid and semi-arid regions, and particularly severe in China (7 million ha), India (20 million ha), Pakistan (3.2 million ha), USA (5.2 million ha), as well as Near East, southern Europe and elsewhere. Demands on production have increased the pressure on existing productive land and moved the limits of production onto increasingly marginal lands. Wise land-use practices have yet to be developed for such conditions. The Executive Director of UNEP reported to the Governing Council in February 1992 concerning the "Status of Desertification and Implementation of the United Nations Plan of Action to Comtat Desertification (PACD)". The Report concludes that major efforts to implement the PACD had gJne into supporting measures rather than concrete corrective field operations. Little evidence of progrl!ss was found in irrigated croplands, rainfed croplands or rangelands. It was recommended that every piece of land should be used in keeping with its ecological characteristics, natural capabilities and constraints.
Download or read book Towns Ecology and the Land written by Richard T. T. Forman and published by Cambridge University Press. This book was released on 2019-02-07 with total page 637 pages. Available in PDF, EPUB and Kindle. Book excerpt: A pioneering book highlighting the dynamic environmental dimensions of towns and villages and spatial connections with surrounding land.
Download or read book Agricultural Practices and Water Quality written by Ted L. Willrich and published by . This book was released on 1971 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt: SEDIMENT AS A WATER POLLUTANT; PLANT NUTRIENTS AS WATER POLLUTANTS; PESTICIDES AS WATER POLLUTANTS; ANIMAL WASTES AS WATER POLLUTANTS; AGRICULTURAL POLLUTION IMPLICATIONS; AGRICULTURE'S INVOLVEMENT IN POLLUTED AND CLEAN WATER.
Download or read book Forest Hydrology written by Devendra Amatya and published by CABI. This book was released on 2016-09-14 with total page 309 pages. Available in PDF, EPUB and Kindle. Book excerpt: Forests cover approximately 26% of the world's land surface area and represent a distinct biotic community. They interact with water and soil in a variety of ways, providing canopy surfaces which trap precipitation and allow evaporation back into the atmosphere, thus regulating how much water reaches the forest floor as through fall, as well as pull water from the soil for transpiration. The discipline "forest hydrology" has been developed throughout the 20th century. During that time human intervention in natural landscapes has increased, and land use and management practices have intensified. The book will be useful for graduate students, professionals, land managers, practitioners, and researchers with a good understanding of the basic principles of hydrology and hydrologic processes.
Download or read book The San Juan Chama Project written by Leah S. Glaser and published by . This book was released on 1998 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Agriculture in Semi Arid Environments written by A.E. Hall and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 357 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
