Download or read book The Effects of Irrigation Management on Soil Salinity and Crop Transpiration at the Field Level by Using the Agro hydrological Model SWAP93 written by S. M. P. Smets and published by . This book was released on 1996 with total page 151 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Modeling the Effects of Irrigation Management on Soil Salinity and Crop Transpiration at the Field Level written by S.M.P. Smets and published by IWMI. This book was released on 1996 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Environmental Management of Irrigated Lands written by and published by IWMI. This book was released on with total page 227 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Study of water and salt balances for eight sample watercourse commands in chishtian sub division punjab Pakistan written by E.G. van Wayjen and published by IWMI. This book was released on 1996 with total page 37 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Relating Farmers Practices to Cotton Yields in the South Punjab Pakistan written by P.D.B.J. Meerbach and published by IWMI. This book was released on 1997 with total page 101 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Soils and Fertilizers written by and published by . This book was released on 1998-07 with total page 1294 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Irrigation Water Salinity and Crop Production written by and published by UCANR Publications. This book was released on 2002 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is reference sheet 9.10 in the Farm Water Quality Planning series. All irrigation water contains dissolved mineral salts, and these can have a profound effect on crop performance. This publication helps you understand the basics of this relationship.
Download or read book Crop growth and soil water balance modeling to explore water management options written by Ines, A. V. M.Droogers, P.Makin, I. W.Das Gupta, A. and published by IWMI. This book was released on 2001 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt: The study was on the performance of the decision support system for agrotechnology transfer (DSSAT) and the soil water atmosphere plant (SWAP) under an acid sulphate soil. The comparison of these models was done as a prerequisite to the selection of an appropriate model, which is capable of simulating water management scenarios, water balance and crop growth, to be coupled with an adaptive optimization algorithm that can be used to explore water management options.
Download or read book Salinity and Water Stress written by M. Ashraf and published by Springer Science & Business Media. This book was released on 2008-12-26 with total page 241 pages. Available in PDF, EPUB and Kindle. Book excerpt: Salinity and water stress limit crop productivity worldwide and generate substantial economic losses each year, yet innovative research on crop and natural resource management can reveal cost-effective ways in which farmers can increase both their productivity and their income. Presenting recent research findings on salt stress, water stress and stress-adapted plants, this book offers insights into new strategies for increasing the efficiency of crops under stressful environments. The strategies are based on conventional breeding and advanced molecular techniques used by plant physiologists, and are discussed using specific case studies to illustrate their potential. The book emphasizes the effects of environmental factors on specific stages of plant development, and discusses the role of plant growth regulators, nutrients, osmoprotectants and antioxidants in counteracting their adverse affects. Synthesising updated information on mechansisms of stress tolerance at cell, tissue and whole-plant level, this book provides a useful reference text for post graduate students and researchers involved in the fields of stress physiology and plant physiology in general, with additional readership amongst researchers in horticulture, agronomy, crop science, conservation, environmental management and ecological restoration.
Download or read book Soil Salinity Under Irrigation written by I. Shainberg and published by Springer. This book was released on 1984 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: The importance of irrigation in the world's agriculture is rapidly increasing. Although it is practised on a large scale mainly in arid and semi-arid zones, supplementary irrigation is becoming popular in semi-humid regions as well. The record of irrigation speaks for itself in terms of increased crop production. However, the question remains as to how permanent the achievement may be. Judging from history, it seems that irrigation eventually failed in many regions because the knowledge and technology available to society at the time were incapable of coping with the problems created. Undoubtedly soil salinity is the most prevalent and widespread problem limiting crop productivity in irrigated agriculture. It has, therefore, attracted the attention of the scientific community since the advent of modern agronomic research. Through the past six to seven decades a considerable body of information has been accumulated, which has promoted the understanding of the principles involved and helped to develop the technology for coping with the problems. Our present knowledge, if judiciously applied, is adequate for coping with many of the salinity problems resulting from mismanagement of irrigation and drainage. But for this knowledge to be used, it has to be generally known and understood and be re-examined from time to time.
Download or read book Modeling the Effects of Saline Groundwater and Irrigation Water on Root Zone Salinity and Sodicity Dynamics in Agro ecosystems written by Syed Hamid Hussain Shah and published by . This book was released on 2013 with total page 201 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Response of Crops to Limited Water written by Lajpat Ahuja and published by ASA-CSSA-SSSA. This book was released on 2008 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: Water stress and heat stress are considered to be two primary factors that limit crop production in many parts of the world. Global warming appears to be increasing the water requirements of plants. Understanding the impact of water deficit on plant physiological processes and efficient water management are of great concern in maintaining food production to meet ever increasing world food demand. The book addresses various climatic soil and plant factors that contribute to the water use efficiency in plants subjected to water stress. It covers all issues related to soil, plant and climatic factors that contribute to the crop responses to water stress. The books advances the knowledge in improving and sustaining crop yields in ever increasing unpredictable climatic fluctuations This book uses crop simulation models for response of crops to limited water under various management and climatic conditions.
Download or read book Environmental Planning Manual for Salinity Management in Irrigated Agriculture written by Gaylord V. Skogerboe and published by . This book was released on 1979 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Essays on the Economics of Salinity in Irrigated Agriculture written by Juhee Lee and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Salinity has become a major concern in irrigated agriculture. Degraded water quality due to salinity threatens agricultural sustainability by limiting agricultural productivity and profitability. The natural intrusion of saltwater into aquifers is one reason for salinity, yet groundwater overpumping for irrigated agriculture, and regional climate and hydrology conditions have compounded such salinity challenges. The sustainability of irrigated agriculture in a saline environment depends on an accurate understanding of the effects of salinity and potential methods of adaptation. This dissertation contains three chapters providing insights into how salinity impacts agricultural decisions and land values. These insights are obtained by analyzing two regions, the High Plains Aquifer in central Kansas and the Central Valley Aquifer in California. The first chapter examines the impact of groundwater salinity on farmers' main irrigation decisions by estimating the response along the extensive (i.e., irrigated acres), direct intensive (i.e., water application depth), and indirect intensive (i.e., crop choice) margins. Econometrics models are estimated using observed farmer behavior in response to exposure to different groundwater salinity levels using field-level panel data in a region of Kansas during 1991-2014. Results demonstrate that farmers facing salinity adjust their water use through all three margins, but most of the decrease in water use due to higher salinity is through the extensive margin. The second chapter evaluates the impact of groundwater salinity on agricultural land values with a unique dataset of parcel sale prices during 1988-2015 in a region of Kansas. I estimate hedonic regression models that control for spatial heterogeneity using either county fixed-effects or a nonlinear function of the geographic coordinates. The results demonstrate that groundwater salinity negatively impacts land values. These estimates can be interpreted as the economic damages from salinity, or equivalently, farmers' willingness-to-pay to offset salinity. The third chapter quantifies the adaption to soil salinity by farmers in California's Western San Joaquin Valley by econometrically estimating how farmers change crop choices in response to different soil salinity levels. I use high-resolution remotely-sensed soil salinity and crop data during 2007-2016. My estimates show that as the level of salinity increases, the probability of growing salt-tolerant crops increases. This suggests that farmer' adapt to salinity according to the degree of salinity. However, my estimates may have some endogeneity bias since crop choice affects the amount of water applied, which could affect the amount of soil salinity.
Download or read book Salinity and Water Stress written by M. Ashraf and published by Springer. This book was released on 2009-08-29 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt: Salinity and water stress limit crop productivity worldwide and generate substantial economic losses each year, yet innovative research on crop and natural resource management can reveal cost-effective ways in which farmers can increase both their productivity and their income. Presenting recent research findings on salt stress, water stress and stress-adapted plants, this book offers insights into new strategies for increasing the efficiency of crops under stressful environments. The strategies are based on conventional breeding and advanced molecular techniques used by plant physiologists, and are discussed using specific case studies to illustrate their potential. The book emphasizes the effects of environmental factors on specific stages of plant development, and discusses the role of plant growth regulators, nutrients, osmoprotectants and antioxidants in counteracting their adverse affects. Synthesising updated information on mechansisms of stress tolerance at cell, tissue and whole-plant level, this book provides a useful reference text for post graduate students and researchers involved in the fields of stress physiology and plant physiology in general, with additional readership amongst researchers in horticulture, agronomy, crop science, conservation, environmental management and ecological restoration.
Download or read book Irrigation Management and Soil Salinity written by Lyman S. Willardson and published by . This book was released on 1981 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Minimizing Salt in Return Flow Through Irrigation Management written by Salinity Laboratory (U.S.) and published by . This book was released on 1977 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:
