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Author : Jaw-Kai Wang
Publisher :
ISBN 13 :
Total Pages : 144 pages
Book Rating : 4.:/5 (125 download)
Download or read book Irrigated Rice Production System Planning and Design written by Jaw-Kai Wang and published by . This book was released on 1979 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : J K. Wang
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (785 download)
Download or read book Irrigated Rice Production System : Design Procedurs written by J K. Wang and published by . This book was released on 1984 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jaw-kai Wang
Publisher : Westview Press
ISBN 13 :
Total Pages : 332 pages
Book Rating : 4.F/5 ( download)
Download or read book Irrigated Rice Production Systems written by Jaw-kai Wang and published by Westview Press. This book was released on 1981 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt: Once a humble orphan existing in the shadows of the brutal Establishment, Lucian (3zLucky(3y Spark has evolved from lone vigilante to (3zThe Torch Keeper," a fiery symbol of the valiant resistance. Lucky now leads the heroic fight to restore justice and liberty to the downtrodden survivors of a world devastated by geological catastrophe and tyranny. But as the Torch Brigade prepares to launch a final, desperate gambit against the ruthless forces controlled by his former companion, the mysterious Cassius Thorn, Lucky struggles with the secret of his own true identity. Is he the spark of hope destined to unite a nation and finally end this destructive crusade? Or is he truly the dark catalyst of the past, intent on reducing the remnants of humanity to smoldering embers? With the fates of his brainwashed brother, Cole, and genetically transformed love, Digory Tycho, caught in the crossfire of epic war, Lucky's final choice may have apocalyptic consequences for an entire world.
Author : Jaw-Kai Wang
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (8 download)
Download or read book Irrigated Rice Production Systems written by Jaw-Kai Wang and published by . This book was released on 1981 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : B. A. M. Bouman
Publisher : Int. Rice Res. Inst.
ISBN 13 : 9712202194
Total Pages : 59 pages
Book Rating : 4.7/5 (122 download)
Download or read book Water Management in Irrigated Rice written by B. A. M. Bouman and published by Int. Rice Res. Inst.. This book was released on 2007 with total page 59 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Luis Catasús Guerra
Publisher : IWMI
ISBN 13 : 9290903694
Total Pages : 33 pages
Book Rating : 4.2/5 (99 download)
Download or read book Producing More Rice with Less Water from Irrigated Systems written by Luis Catasús Guerra and published by IWMI. This book was released on 1998 with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the past decade, we have witnessed a growing scarcity of and competition for water around the world. As the demand for water for domestic, municipal, industrial, and environmental purposes rises in the future, less water will be available for agriculture. But the potentials for new water resource development projects and expanding irrigated area are limited. We must therefore find ways to increase the productivity of water used for irrigation. This paper reviews the literature on irrigation efficiency and on the potential for increasing the productivity of water in rice-based systems. It stresses the continuing confusion over the concepts of irrigation efficiency and water productivity. It identifies the reasons for the wide gap between water requirement and actual water input (both irrigation diversions and rainfall) in irrigated rice production systems and discusses potential opportunities for increasing water productivity both on-farm and at the system level. Based on the reported low farm and system level irrigation efficiencies, the potentials for water savings in rice production appear to be very large. But we do not know the degree to which various farm and system interventions will lead to sustainable water savings in the water basin until we can quantify the downstream impact of the interventions. Studies on the economic benefits and costs, and environmental aspects of alternative interventions are also lacking. This paper emphasizes the need to measure the productivity of water at farm, system, and basin levels, and to understand how the productivity at one level relates to the productivity at another. Without water balance studies to measure productivity at these different scales, it is not possible to identify the potential economic benefits of alternative interventions and the most appropriate strategies for increasing irrigation water p productivity in rice-based systems.
Author : Tejendra Chapagain
Publisher :
ISBN 13 : 9781536126198
Total Pages : 0 pages
Book Rating : 4.1/5 (261 download)
Download or read book The System of Rice Intensification and Conventional Rice Farming written by Tejendra Chapagain and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The System of Rice Intensification (SRI) involves the adoption of certain changes in management practices for rice cultivation that create a better growing environment for rice crops. The use of intermittent irrigation with alternate wet and dry intervals (AWD) and single transplanting of the younger seedlings in wider spacing areas are regarded as the key factors in SRI for better crop growth and productivity. Field experiments were conducted in Chiba, Japan during the two consecutive rice growing seasons (May-September) of 2008-09 to observe the effects of SRI components on rice crop performance, field environment, water savings, and water-wise rice production. The effects of the irrigation method, age of seedlings and spacing were evaluated in the 2008 rice season with eight treatment combinations in a split-split plot design (S-SPD). AWDI at 10 day intervals and continuous flooding throughout the cropping season were the two main plot factors while the effects of seedling age (14 and 21 days) and plant spacing (30x30 cm2 and 30x18 cm2) were evaluated as sub and sub-sub plot factors, respectively. The experimental results revealed that the SRI management with the proposed AWDI can save a significant amount of irrigation water (29%) without reduced grain yield (7.41t/h compared with 7.37t/ha from normal planting with ordinary water management). Water productivity was also observed to be significantly higher in all combinations of practices in AWDI plots: 1.74 g/liter with SRI management and AWDI as compared to 1.23 g/liter in normal planting with ordinary water management. In addition, the research outcomes showed a role of AWDI in minimizing pest and disease incidence, shortening the rice crop cycle and also improving the plant stand until harvest. Synergistic effects of younger seedlings and wider spacing were seen in tillering ability, panicle length and a number of filled grains that ultimately led to higher productivity with better grain quality. Field experiments with the complete sets of SRI practices were carried out in Randomized Complete Block Design (RCBD) during the 2009 rice growing season in the same field. SRI (with 8 day old seedlings) and conventional (with 22 day old seedlings) practices were the first factor (cultivation method), while organic and inorganic managements were evaluated as the second factor (management method) in the field experiments. The highest yield was observed through the conventional method with inorganic management (6.84t/h) that was on par with the organic SRI (6.59t/h) followed by organic conventional (6.48t/h). It was recorded as 5.92t/h in inorganic SRI management. Overall, the effects of SRI components were positive and significant on a per plant basis; however, they did not differ significantly in terms of grain yield per unit area. The development of healthy and vigorous roots, increased stem diameter, greater productive leaf area, longer panicles, greater number of filled grains, development of plants tolerant to insect-pest and disease, and reduced plant lodging percentage were some notable achievements with SRI management. Water savings and water-wise rice production are other important issues that are likely to draw the attention of rice researchers and farm communities to adopt SRI under scarce water conditions. However, comparatively better grain yields with conventional management methods underscore a need for further investigations in defining an appropriate combination of practices for SRI management, considering local soil properties, prevailing climate and critical watering stages in rice crop management.
Author : Adrian Laycock
Publisher : CABI
ISBN 13 : 9781845932640
Total Pages : 315 pages
Book Rating : 4.9/5 (326 download)
Download or read book Irrigation Systems written by Adrian Laycock and published by CABI. This book was released on 2007-01-01 with total page 315 pages. Available in PDF, EPUB and Kindle. Book excerpt: Of all the confrontations man has engineered with nature, irrigation systems have had the most widespread and far-reaching impact on the natural environment. Over a quarter of a billion hectares of the planet are irrigated and entire countries depend on irrigation for their survival and existence. Considering the importance of irrigation schemes, it is unfortunate that until recently the technology and principles of design applied to their construction has hardly changed in 4,000 years. Modern thinking on irrigation engineering has benefited from a cross-fertilization of ideas from many other fields including social sciences, control theory, political economics and agriculture. However, these influences have been largely ignored by irrigation engineers.Drawing on almost 40 years of experience of irrigation in the developing world, Laycock introduces new ideas on the design of irrigation systems and combines important issues from the disciplines of social conflict, management, and political thinking.
Author : International Rice Research Institute
Publisher : Int. Rice Res. Inst.
ISBN 13 : 9711040263
Total Pages : 208 pages
Book Rating : 4.7/5 (11 download)
Download or read book Irrigation Policy and Management in Southeast Asia written by International Rice Research Institute and published by Int. Rice Res. Inst.. This book was released on 1978 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: Planning and design of irrigation systems; management, operation, and maintenance of irrigation systems;economic analyses of irrigation; organization of irrigation activities and behavior of irrigators.
Author : Jan Feyen
Publisher :
ISBN 13 :
Total Pages : 452 pages
Book Rating : 4.:/5 (89 download)
Download or read book Advances in Planning, Design and Management of Irrigation Systems as Related to Sustainable Land Use written by Jan Feyen and published by . This book was released on 1992 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher : IWMI
ISBN 13 :
Total Pages : 54 pages
Book Rating : 4./5 ( download)
Download or read book Problems of irrigation management for rice-based farming systems: Progress report on the Rockfeller Foundation funded IIMI-IRRI collaborative project written by and published by IWMI. This book was released on with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : International Rice Research Institute
Publisher : Int. Rice Res. Inst.
ISBN 13 : 9711041782
Total Pages : 330 pages
Book Rating : 4.7/5 (11 download)
Download or read book Weather and Rice written by International Rice Research Institute and published by Int. Rice Res. Inst.. This book was released on 1987 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt: Opening remarks; Biological stresses; Cropping systems; Deterministic models; Recommendations.
Author : Mona Liza F. Delos Reyes
Publisher : CRC Press
ISBN 13 : 135165022X
Total Pages : 316 pages
Book Rating : 4.3/5 (516 download)
Download or read book Modernisation Strategy for National Irrigation Systems in the Philippines written by Mona Liza F. Delos Reyes and published by CRC Press. This book was released on 2017-07-12 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book presents documentary evidence of the insufficiency of rehabilitation works to close the gap between the irrigation service and actual area irrigated of publicly funded national irrigation systems in the Philippines. It outlines a methodology for formulating a modernisation plan for national irrigation systems with focus on the mostly ungauged, medium to small canal irrigation systems. The proposed methodology adaptively modified some known modernisation concepts and techniques and integrated them in a more holistic framework in the context of changing weather patterns and river flow regimes. It includes in-depth review of rehabilitation works; system diagnosis; revalidation of design assumptions on percolation and water supply; characterisation of system management, irrigation service and demand; and drawing up of options and a vision for the modernised irrigation systems. Central to the proposed modernisation strategy is the logical coherence among the design of physical structures, system operation and water supply so that improvements of irrigation service are possible. The book discusses the development of the proposed methodology and demonstrates its utility in two case study irrigation systems.
Author : Raveendra Kumar Rai
Publisher : Academic Press
ISBN 13 : 0128118563
Total Pages : 680 pages
Book Rating : 4.1/5 (281 download)
Download or read book Planning and Evaluation of Irrigation Projects written by Raveendra Kumar Rai and published by Academic Press. This book was released on 2017-04-06 with total page 680 pages. Available in PDF, EPUB and Kindle. Book excerpt: Planning and Evaluation of Irrigation Projects: Methods and Implementation presents the considerations, options and factors necessary for effective implementation of irrigation strategies, going further to provide methods for evaluating the efficiency of systems-in-place for remedial correction as needed. As the first book to take this lifecycle approach to agricultural irrigation, it includes real-world examples not only on natural resource availability concerns, but also on financial impacts and measurements. With 21 chapters divided into two sections, this book is a valuable resource for agricultural and hydrology engineers, conservation scientists and anyone seeking to implement and maintain irrigation systems. Uses real-world examples to present practical insights Incorporates both planning and evaluation for full-scope understanding and application Illustrates both potential benefits and limitations of irrigation solutions Provides potential means to increase crop productivity that can result in improved farm income
Author : Senen M. Miranda
Publisher : IWMI
ISBN 13 : 9290901578
Total Pages : 349 pages
Book Rating : 4.2/5 (99 download)
Download or read book Irrigation Management for Rice-based Farming Systems in Bangladesh, Indonesia and the Philippines written by Senen M. Miranda and published by IWMI. This book was released on 1993 with total page 349 pages. Available in PDF, EPUB and Kindle. Book excerpt: Section I: Technical considerations for rice-based farming systems: irrigation system management; Section II: Technical considerations for rice-based farming systems: farm-level management; Section III: Technical considerations for rice-based farming systems: farming systems; Section IV: Synthesis papers.
Author : Senen M. Miranda
Publisher : IWMI
ISBN 13 : 9290901624
Total Pages : 201 pages
Book Rating : 4.2/5 (99 download)
Download or read book Management Arrangements for Accommodating Nonrice Crops in Rice-based Irrigation Systems written by Senen M. Miranda and published by IWMI. This book was released on 1992 with total page 201 pages. Available in PDF, EPUB and Kindle. Book excerpt: Country reports; Special papers; Workshop group sessions.
Author :
Publisher : IWMI
ISBN 13 : 9290907282
Total Pages : 64 pages
Book Rating : 4.2/5 (99 download)
Download or read book Climate change, water and agriculture in the Greater Mekong Subregion written by and published by IWMI. This book was released on 2010 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt: The impacts of climate change on agriculture and food production in Southeast Asia will be largely mediated through water, but climate is only one driver of change. Water resources in the region will be shaped by a complex mixture of social, economic and environmental factors. This report reviews the current status and trends in water management in the Greater Mekong Subregion; assesses likely impacts of climate change on water resources to 2050; examines water management strategies in the context of climate and other changes; and identifies priority actions for governments and communities to improve resilience of the water sector and safeguard food production.
