Water Productivity In Agriculture

Water Productivity in Agriculture PDF
Author: J. W. Kijne
Publisher: CABI
ISBN: 1845933397
Size: 16.39 MB
Format: PDF, ePub, Mobi
Category : Crops and water
Languages : en
Pages : 332
View: 3693

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Water Productivity In Agriculture

by J. W. Kijne, Water Productivity In Agriculture Books available in PDF, EPUB, Mobi Format. Download Water Productivity In Agriculture books, First title in a major new seriesAddresses improving water productivity to relieve problems of scarcity and competition to provide for food and environmental securityDraws from scientists having a multitude of disciplines to approach this important problemIn a large number of developing countries, policy makers and researchers are increasingly aware of the conflicting demands on water, and look at agriculture to be more effective in its use of water. Focusing on both irrigated and rain-fed agriculture, this book gives a state of the art review of the limits and opportunities for improving water productivity in crop production. It demonstrates how efficiency of water use can be enhanced to maximize yields. The book represents the first in a new series of volumes resulting from the Comprehensive Assessment of Water Management in Agriculture, a research program conducted by the CGIAR's Future Harvest Centres, the Food and Agriculture Organization of the United Nations and partners worldwide. It will be of significant interest to those working in areas of soil and crop science, water management, irrigation, and development studies.


Water Productivity

Water Productivity PDF
Author: M. R. Et Al Umesh
Publisher: Daya Publishing House
ISBN: 9789388173766
Size: 73.41 MB
Format: PDF, ePub
Category : Technology & Engineering
Languages : en
Pages : 368
View: 7418

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Water Productivity

by M. R. Et Al Umesh, Water Productivity Books available in PDF, EPUB, Mobi Format. Download Water Productivity books, This book is a comprehensive knowledge source to the researchers, teaching faculty, students and other agriculture professionals. Not only importance of water is highlighted as a precious non-renewable natural resource but also the on-farm water management is equally emphasized considering the high water requiring crops as well as most efficient irrigation systems and practices with necessary work sheets. It is hoped that the book serves as a reference source for graduate and post graduate students and faculty in agricultural universities in India and abroad. This book is comprised of 32 chapters prepared on variety of topics by eminent personalities involved in agriculture research, education and extension. Previous exercises made in the country and elsewhere are briefed and new trends in water management are delineated in these chapters. Overall, the issues covered in the book are of practical and policy significance with detailed deliberations which often reappear because of their importance and diversity of experts.


Enhancing Irrigation Water Productivity

Enhancing Irrigation Water Productivity PDF
Author: Anil Kumar Mishra
Publisher: Studera Press
ISBN: 9385883593
Size: 73.99 MB
Format: PDF, ePub
Category : Technology & Engineering
Languages : en
Pages : 556
View: 1311

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Enhancing Irrigation Water Productivity

by Anil Kumar Mishra, Enhancing Irrigation Water Productivity Books available in PDF, EPUB, Mobi Format. Download Enhancing Irrigation Water Productivity books, Water a key natural resource, fundamental to life, livelihood, food security and sustainable development is rapidly becoming scarce and limited. Agriculture is the major water user in our country utilizing nearly 70-80 per cent of all the utilizable water resources of the country. Therefore, Agricultural Water Management (AWM) interventions aim at enhancing per capita benefits, while preventing the degradation of natural resource bases of land, water and ecosystem services. Evidence shows that AWM interventions have increased yields, which has helped areas with low productivity. In recent past a large number of new techniques and advanced tools have been invented in recent past which can enhance the water productivity in agriculture to a very high level. Knowledge adoption and extensive use of these tools and techniques needs proper dissemination. There is a dearth of ample number of technically trained manpower to undertake the work of On-farm AWM. Therefore, the present book has been organized with following specific objectives: i) to impart the advanced knowledge of On-farm water management using modern concepts, tools and techniques for assessing, planning and designing the AWM (irrigation and drainage) systems and to disseminate these techniques for enhancing crop water use efficiencies; ii) to train the readers in designing, installation operation and automated operation, controls and management of high-tech irrigation water management systems; and iii). to provide the participants an opportunity to discuss and exchange the new ideas/knowledge with experts/resource persons who have contributed substantially in Agricultural Water Management (AWM). The book has a very wide spectrum covering almost all topics pertaining to advanced concepts and methods of modern Agricultural Water Management. The present book will provide to the readers an in-depth understanding of various related topics pertaining to highly efficient irrigation water management for crop production and enhancing agricultural water productivity such as scientific design and layout of farm irrigation and drainage, soil water content measurement using TDR/Neutron Moisture meters/Soil moisture probe, geophysical techniques of groundwater exploration etc. It will elaborate the concepts and methodology of using modern instruments and systems of irrigation such as drip, sprinkler, rain gun, level basin system etc. that would be an added benefit. Applications of modern techniques such as GIS and remote sensing applications for enhancing water resources use efficiencies in irrigation project, sensor based weather data collection and automated irrigation management and control systems under open field and covered cultivation have been explained in depth. The book shall impart the comprehensive knowledge on advanced concepts in Soil-Plant-Climate interactions, scientific estimation of crop water demand, various irrigation scheduling criterions and application of modern tools and techniques such as; application of computer softwares (such as EQUITA/DRIPD/CROPWAT/AQACROP/IMPASSE/USAR etc.) for irrigation planning and management; under different water supply scenarios in a lucid manner.


Opportunities For Improving Water Productivity Using Mobile Drip Irrigation

Opportunities for Improving Water Productivity Using Mobile Drip Irrigation PDF
Author: Tobias Ebong Oker
Publisher:
ISBN:
Size: 46.87 MB
Format: PDF, ePub
Category :
Languages : en
Pages :
View: 7699

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Opportunities For Improving Water Productivity Using Mobile Drip Irrigation

by Tobias Ebong Oker, Opportunities For Improving Water Productivity Using Mobile Drip Irrigation Books available in PDF, EPUB, Mobi Format. Download Opportunities For Improving Water Productivity Using Mobile Drip Irrigation books, The Ogallala aquifer has been important to agriculture in the U.S. High Plains for the past six decades. Groundwater from the aquifer helped turn the fertile soils of the region, large parts of which are semi-arid, into some of the most productive agricultural lands in the U.S. and the world. However, this agricultural success has come at a great cost to the aquifer. Today, as a result of drastic aquifer drawdown, well capacities in some regions of the High Plains are no longer sufficient to sustainably irrigate crops. In response to this growing problem, wide ranging efforts towards conservation of the Ogallala aquifer were formulated and implemented. One of these efforts is to further improve irrigation efficiency. Adaptation of microirrigation, an efficient method of irrigation, to center pivots is regarded by some as the next major step towards expanding the usage of microirrigation technology, and along with-it improving the efficiency in center pivot systems. Four studies were conducted as parts of this dissertation with the application of a four-span center pivot, installed at the Kansas State University's Southwest Research and Extension Centre (SWREC) in Garden City, Kansas. The studies assessed the technical performance of Mobile Drip Irrigation (MDI) compared to Low Elevation Spray Application (LESA) and Low Energy Precision Application (LEPA). In the first study, the irrigation uniformity, application efficiency and seasonal irrigation uniformity of MDI were evaluated against those of LEPA and LESA. Two sets of MDIs, one with a dripper flow rate of 3.8 L/h, and another of 7.6 L/h, a LESA spray and LEPA bubbler were utilized. Potential differences in season-long irrigation uniformity between the devices were evaluated by analyzing a periodically acquired vegetative index data from aerial imaging. The results showed that MDI and LEPA were more efficient than LESA as indicated by their significantly higher coefficients of uniformity and higher application efficiencies. The second study evaluated soil water redistribution under MDI against those of LEPA and LESA. The effect of irrigation was found to be mostly limited to the top 60 cm of the soil profile for all the evaluated irrigation application technologies. MDI and LEPA showed the highest horizontal variation in water content, and water redistribution pattern of MDI was similar to LEPA. In the third study, the performance of MDI for corn production, in comparison to LESA and LEPA was conducted by comparing grain yield, water productivity, above ground biomass, leaf area index (LAI), and soil water content. In general, crop biophysical measurements under MDI were not significantly different from those under LEPA and LESA, and any marginal benefits of MDI were likely masked by rainfall. Hence, further evaluation of MDI is recommended under stringent water application conditions. The fourth study assessed MDI dripline spacing and length for different soil types.


Irrigation

Irrigation PDF
Author: Sandra Ricart
Publisher: BoD – Books on Demand
ISBN: 1789846765
Size: 62.56 MB
Format: PDF, ePub
Category : Technology & Engineering
Languages : en
Pages : 134
View: 2554

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Irrigation

by Sandra Ricart, Irrigation Books available in PDF, EPUB, Mobi Format. Download Irrigation books, The management of irrigation systems is context-dependent, socially constructed, and technically uncertain. An example of complex social-ecological systems, irrigation deals with both the ecosystem uncertainty and the implementation of new technological systems and water management options. Issues to be addressed by irrigation systems at the global scale include: water productivity and food security, field operation and maintenance, spate irrigation in climate change scenarios, and vulnerability of environmental resources. This book provides examples of some of the current challenges faced by irrigation systems from technical and social perspectives. The book offers an easy-to-follow format focused on different case studies combining evidence-based solutions for increasing resilience and reducing vulnerability of irrigation systems in semi-arid and arid regions across the world.


Sustaining Crop Water Productivity In Rice Wheat Systems Of South Asia A Case Study From The Punjab Pakistan

Sustaining crop water productivity in rice wheat systems of South Asia  A case study from the Punjab  Pakistan PDF
Author: Waqar Ahmed Jehangir
Publisher: IWMI
ISBN: 9290906537
Size: 35.27 MB
Format: PDF, Kindle
Category : Crop yields
Languages : en
Pages : 37
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Sustaining Crop Water Productivity In Rice Wheat Systems Of South Asia A Case Study From The Punjab Pakistan

by Waqar Ahmed Jehangir, Sustaining Crop Water Productivity In Rice Wheat Systems Of South Asia A Case Study From The Punjab Pakistan Books available in PDF, EPUB, Mobi Format. Download Sustaining Crop Water Productivity In Rice Wheat Systems Of South Asia A Case Study From The Punjab Pakistan books, This working paper presents the results of the Pakistan Component of the Rice-Wheat Consortium Project on ‘Sustaining the rice-wheat production systems of Asia’. Rice and wheat crops are main nsources of human food and substantially contribute to feeding livestock. The advent of the green revolution in the 1960s resulted in a tremendous increase in the production of these two cereal crops and the rice-wheat cropping system emerged as a very important source of food supply in South Asia. Recent symptoms of stagnant growth rates in productivity and the degradation of the resource base pose serious challenges to future food security and natural resources management in the region. The growing scarcity of water in the region


Growing More Rice With Less Water Increasing Water Productivity In Rice Based Cropping Systems

Growing more rice with less water  Increasing water productivity in rice  based cropping systems PDF
Author: International Water Management Institute (IWMI)
Publisher: IWMI
ISBN: 929090531X
Size: 34.70 MB
Format: PDF, ePub, Mobi
Category : Rice
Languages : en
Pages : 59
View: 286

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Growing More Rice With Less Water Increasing Water Productivity In Rice Based Cropping Systems

by International Water Management Institute (IWMI), Growing More Rice With Less Water Increasing Water Productivity In Rice Based Cropping Systems Books available in PDF, EPUB, Mobi Format. Download Growing More Rice With Less Water Increasing Water Productivity In Rice Based Cropping Systems books, Work continues at two sites in China, the Zhanghe irrigation system (ZIS) in Hubei and the Liuyuankuo irrigation system (LIS) in Henan, and at the Murrumbidgee irrigation area (MIA) in Australia. Progress this year is reported by subproject. However, as we move into the modeling phase of the study, a major focus this coming year will be on integrating activities between subprojects.


An Assessment Of Crop Water Productivity In The Indus And Ganges River Basins Current Status And Scope For Improvement

An assessment of crop water productivity in the Indus and Ganges River Basins  current status and scope for improvement PDF
Author: Cai, Xueliang
Publisher: IWMI
ISBN: 9290907355
Size: 42.53 MB
Format: PDF, Kindle
Category :
Languages : en
Pages : 30
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An Assessment Of Crop Water Productivity In The Indus And Ganges River Basins Current Status And Scope For Improvement

by Cai, Xueliang, An Assessment Of Crop Water Productivity In The Indus And Ganges River Basins Current Status And Scope For Improvement Books available in PDF, EPUB, Mobi Format. Download An Assessment Of Crop Water Productivity In The Indus And Ganges River Basins Current Status And Scope For Improvement books, The Indus and Ganges River Basin, being the most populous in the world, is under extreme pressure to sustain food security. Production resources including water are being exploited to various levels from underdevelopment to heavy overexploitation. This report provides a bird’s eye view of the basin and focuses on the nexus between agricultural production and water consumption, making it possible to pinpoint the areas with high/low water productivity and identify the factors behind this, which helps to promote informed decision making in light of environmental sustainability.


Water Productivity In The Syr Darya River Basin

Water Productivity in the Syr Darya River Basin PDF
Author: Iskandar Abdullaev
Publisher: IWMI
ISBN: 9290905093
Size: 71.22 MB
Format: PDF, Kindle
Category : Irrigation
Languages : en
Pages : 75
View: 5637

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Water Productivity In The Syr Darya River Basin

by Iskandar Abdullaev, Water Productivity In The Syr Darya River Basin Books available in PDF, EPUB, Mobi Format. Download Water Productivity In The Syr Darya River Basin books, his report analyses water productivity and water-saving initiatives in the Syr-Darya river basin in Central Asia and presents institutional and political aspects of water management in the basin.


Water Productivity In Context The Experiences Of Taiwan And The Philippines Over The Past Half Century

Water productivity in context  the experiences of Taiwan and the Philippines over the past half century PDF
Author: Barker, R.
Publisher: IWMI
ISBN: 9290907517
Size: 62.10 MB
Format: PDF, Docs
Category :
Languages : en
Pages : 33
View: 7352

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Water Productivity In Context The Experiences Of Taiwan And The Philippines Over The Past Half Century

by Barker, R., Water Productivity In Context The Experiences Of Taiwan And The Philippines Over The Past Half Century Books available in PDF, EPUB, Mobi Format. Download Water Productivity In Context The Experiences Of Taiwan And The Philippines Over The Past Half Century books, As we enter an era of increasing water scarcity, there is a growing interest to find ways to capture and put water to more productive uses. Substantial increases in the productivity of water in agriculture are needed to meet the demands for food and ensure environmental security, and to satisfy the demands for non-agricultural uses. However, increasing water productivity in rice-dominated agriculture is a function of the irrigation infrastructure, advances in rice-plant breeding, and the physical, institutional and socioeconomic environments. This paper first describes the potential ways in which increased water productivity can be achieved in the context of rice production in Asia. It then illustrates the ways in which the differences in the environmental context affect the ability to increase water productivity, the approaches used and the incentives to do so. This is explained using two ‘case studies’ reflecting the experiences of Taiwan and the Philippines over the past half-century.