Water Wise Rice Production
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Water Wise Rice Production
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Author : B. A. M. Bouman
language : en
Publisher: Int. Rice Res. Inst.
Release Date : 2002
Water Wise Rice Production written by B. A. M. Bouman and has been published by Int. Rice Res. Inst. this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with Rice categories.
Growing More Rice With Less Water Increasing Water Productivity In Rice Based Cropping Systems
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Author : International Water Management Institute (IWMI)
language : en
Publisher: IWMI
Release Date : 2004
Growing More Rice With Less Water Increasing Water Productivity In Rice Based Cropping Systems written by International Water Management Institute (IWMI) and has been published by IWMI this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with Rice categories.
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.
The System Of Rice Intensification And Conventional Rice Farming
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Author : Tejendra Chapagain
language : en
Publisher:
Release Date : 2017
The System Of Rice Intensification And Conventional Rice Farming written by Tejendra Chapagain and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017 with Agricultural intensification categories.
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.
Growing More Rice With Less Water Increasing Water Productivity In Rice Based Cropping Systems Progress Of Research 1 July 2001 To 30 June 2002
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Author : International Water Management Institute (IWMI)
language : en
Publisher: IWMI
Release Date : 2003
Growing More Rice With Less Water Increasing Water Productivity In Rice Based Cropping Systems Progress Of Research 1 July 2001 To 30 June 2002 written by International Water Management Institute (IWMI) and has been published by IWMI this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with Irrigation farming categories.
The project is a follow-on to Impact of Water Saving Techniques in China (LWRl/98/66) that focused on the Zhanghe Irrigation System (ZIS) in Hubei Province and it has been expanded to include a second site in the drier Yellow river basin, the Liuyuankou Irrigation System (LIS) in Henan Province, and the Lower Murrumbidgee Catchment in Australia. An Australian partner, Commonwealth Scientific and Industrial Research Organization (CSIRO) was added to the team comprising the International Rice Research Institute (IRRI), International Water Management Institute (IWMI), Wuhan University (WHU) to strengthen our modeling and analytical capacity.
Water Management In Irrigated Rice
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Author : B. A. M. Bouman
language : en
Publisher: Int. Rice Res. Inst.
Release Date : 2007
Water Management In Irrigated Rice written by B. A. M. Bouman and has been published by Int. Rice Res. Inst. this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with Rice categories.
Water Saving Irrigation For Rice
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Author : Y. H. Li
language : en
Publisher: IWMI
Release Date : 2001
Water Saving Irrigation For Rice written by Y. H. Li and has been published by IWMI this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with Irrigation efficency categories.
Contributed papers presented at the workshop.
Water Productivity In Agriculture
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Author : J. W. Kijne
language : en
Publisher: CABI
Release Date : 2003
Water Productivity In Agriculture written by J. W. Kijne and has been published by CABI this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with Crops and water categories.
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 Saving In Rice Production
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Author : Ekkehard Kürschner
language : en
Publisher:
Release Date : 2011
Water Saving In Rice Production written by Ekkehard Kürschner and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with categories.
Alternate Wet Dry Irrigation In Rice Cultivation
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Author : Wim van der Hoek
language : en
Publisher: IWMI
Release Date : 2001
Alternate Wet Dry Irrigation In Rice Cultivation written by Wim van der Hoek and has been published by IWMI this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with Irrigation categories.
More irrigated land is devoted to rice than to any other crop. A method to save water in irrigated rice cultivation is the intermittent drying of the rice fields, known as alternate wet/dry irrigation (AWDI). This report reviews previous studies in AWDI, with a focus on mosquito vector control, water saving, and rice yields. Examples are provided from a number of countries.
Producing More Rice With Less Water From Irrigated Systems
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Author : Luis Catasús Guerra
language : en
Publisher: IWMI
Release Date : 1998
Producing More Rice With Less Water From Irrigated Systems written by Luis Catasús Guerra and has been published by IWMI this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with Agricultural productivity categories.
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.