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:
Download or read book Irrigation Management for Crop Diversification in Indonesia the Philippines and Sri Lanka written by Senen M. Miranda and published by IWMI. This book was released on 1989 with total page 111 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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.
Download or read book Fragile Lives in Fragile Ecosystems written by International Rice Research Institute and published by Int. Rice Res. Inst.. This book was released on 1995 with total page 991 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fragile lives in fragile ecosystems: Feeding the world's poor from neglected rice ecosystems was the theme of the 1995 International Rice Research Conference. During the February meeting, participants assessed progress in rice research and identified new research approaches for reducing constraints and improving productivity and sustainability of less favored and fragile rice producing areas - these are the upland, rainfed lowland, and flood-prone ecosystems.
Download or read book Irrigation Management for Crop Diversification in Indonesia the Philippines and Sri Lanka written by Senen M. Miranda and published by IWMI. This book was released on 1989 with total page 111 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper is a synthesis of IIMI's research on irrigation management for crop diversification in Indonesia, the Philippines and Sri Lanka. It provides some conclusions and recommendations, the potentials and constraints to more intensive non-rice production during the drier part of the year in irrigation systems that have been developed primarily for rice production. The research results obtained from selected irrigation systems sites in the three countries from 1985 to date were analyzed and compared by establishing common reference points where they existed, such as common constraints, potentials and institutional arrangements and by explaining differences based on observed data for each system. Relevant secondary data other than from the research sites were located to shed further insight in the synthesis.
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:
Download or read book Asian Rice Bowls written by Prabhu L. Pingali and published by Int. Rice Res. Inst.. This book was released on 1997 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduction: the state of rice in post-green-revolution Asia; Rice productivity growth: the case against complacency; Sustaining farm profits through technical change; Intensification-induced degradation of the paddy resource base; Erosion, pollution and poison: externalities and rice; Asian rice market: demand and supply prospects; GATT and rice: impact on the rice market and implications for research priorities; Agricultural commercialization and farmer product choices: the case of diversification out of rice; Strategic look at factor markets and the organization of agricultural production beyond 2025; Post-green-revolution seed technology for intensive rice systems; Fertilizers and pesticides: higher levels versus improved efficiencies; Dealing with labor scarcity: mechanical technologies.
Download or read book Growing more rice with less water Increasing water productivity in rice based cropping systems written by International Water Management Institute (IWMI) and published by IWMI. This book was released on 2004 with total page 65 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Producing More Rice with Less Water from Irrigated Systems written by L.C. Guera, S.I. Bhuiyan, T.P. Tuong, R. Barker and published by Int. Rice Res. Inst.. This book was released on 1998 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper deals with issues of improving the efficiency and productivity of water for rice production on-farm and in the irrigation system.
Download or read book The Sustainability of Rice Farming written by D. J. Greenland and published by Cabi. This book was released on 1997 with total page 273 pages. Available in PDF, EPUB and Kindle. Book excerpt: The importance of the sustainability of rice farming; The origins and history of rice farming; Rice farming today; The biophysical basis of the sustainability of rice farming; Maintaining the nutrient requirements of rice; Maintaining water supplies for rice; Social and economic factors and the sustainability of rice farming; Concerns about the sustainability of rice faming; Increasing and sustaining rice production.
Download or read book Direct Seeding written by and published by Int. Rice Res. Inst.. This book was released on 2002 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book 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 published by IWMI. This book was released on 2003 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Irrigation Management Improvement for Rice Based Farming System written by and published by . This book was released on 1990* with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Irrigation Management for Diversified Cropping written by International Irrigation Management Institute and published by IWMI. This book was released on 1987 with total page 279 pages. Available in PDF, EPUB and Kindle. Book excerpt: Improvements in rice growing technologies during the last two decades have resulted in a number of countries, especially in the humid tropical regions of Asia, nearing self-sufficiency in rice production. Consequently, policies are shifting in these countries toward minimizing the under-utilization of land by increasing the cropping intensity of irrigated areas, particularly by growing non-rice crops during the dry season. These workshop papers discuss the advantages of and constraints to crop diversification in different country situations throughout Asia.
Download or read book Modeling Water Resources Management at the Basin Level written by Ximing Cai and published by Intl Food Policy Res Inst. This book was released on 2006-01-01 with total page 169 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report develops an integrated economic-hydrologic river basin model and applies it to the Maipo River Basin in central Chile. Policy simulations based on the modeling framework can serve as a guide for water resource managers and policymakers in designing appropriate water policies and establishing reform priorities for water resource allocation. Alternative analyses undertaken for the Maipo basin-a mature water economy with limited resources and competition for water across all water-using sectors-offer new insights into the changing relationships between irrigation system and basin-level water use efficiencies. They also show how these changing relationships affect farm incomes and environmental impacts. Simulations also provide new results on the role that the trading of water use rights can play in maintaining farm production levels, enhancing farmer incomes, and increasing water use efficiencies.
Download or read book Irrigation Record written by New South Wales. Water Conservation and Irrigation Commission and published by . This book was released on 1915 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Implementing the Strategy Work Plan for 1990 1994 written by International Rice Research Institute and published by . This book was released on 1989 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:
