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Author : Leslie E. Small
Publisher :
ISBN 13 :
Total Pages : 14 pages
Book Rating : 4.:/5 (284 download)
Download or read book Evaluating Irrigation System Performance with Measures of Irrigation Efficiencies written by Leslie E. Small and published by . This book was released on 1992 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : P. S. Rao
Publisher : IWMI
ISBN 13 : 9290901985
Total Pages : 83 pages
Book Rating : 4.2/5 (99 download)
Download or read book Review of Selected Literature on Indicators of Irrigation Performance written by P. S. Rao and published by IWMI. This book was released on 1993 with total page 83 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Ainalem Nega
Publisher :
ISBN 13 :
Total Pages : 135 pages
Book Rating : 4.:/5 (829 download)
Download or read book Efficiency of Different Irrigation Systems for Sustainable Management of Water and Nutrient Flows in the Harvey Irrigation Area written by Ainalem Nega and published by . This book was released on 2011 with total page 135 pages. Available in PDF, EPUB and Kindle. Book excerpt: [Truncated abstract] Sustainable management of water resources and the mitigation of nutrient flows into the Peel Harvey inlet from irrigated farmland can be achieved through a combination of land management practice and the implementation of efficient irrigation systems. A quantitative understanding of efficiency for individual irrigation systems is required to determine the efficacy of system employed to grow crops or pastures and improve water resource and delivery management. An improved understanding is gained through the evaluation of design and water application methodologies utilized in the Harvey Irrigation District in Western Australia. Various irrigation system performance measures are used to evaluate and compare the irrigation systems. Soil moisture measurements over a 60 mm depth were taken before and after irrigation for each application system to determine the temporal and spatial variability of soil moisture within the study area. The four irrigation systems (floppy, solid set, center pivot and subsurface drip) used in the Harvey Irrigation District were compared using efficiency and uniformity criteria. Soil moisture measurements were taken at the Waroona Research Station for each irrigation system before and after the irrigation cycle, over 60 mm depth using a thetraprobe. A ten m grid spacing for irrigation performance measures and a five m grid spacing was used to assess soil moisture retention rates. The combined water application and irrigation efficiency for each sprinkler system was: 73.4% for floppy; 68% for solid set; 81.2% for center pivot; and 94.4% for subsurface drip system. The total system efficiency from reservoir to experimental plot was derived for each system and given as: floppy 59.0%, solid set 54.0%, center pivot 65.0% and subsurface drip 75.0% irrigation methods. The average low-quarter distribution uniformity (DUlq) was: 50.0% for floppy: 52.0% for solid set: 56.2% for center pivot; and 84.4% for subsurface drip irrigation system...
Author : H. Murray-Rust
Publisher : IWMI
ISBN 13 : 9290901926
Total Pages : 155 pages
Book Rating : 4.2/5 (99 download)
Download or read book Irrigation System Performance Assessment and Diagnosis written by H. Murray-Rust and published by IWMI. This book was released on 1993 with total page 155 pages. Available in PDF, EPUB and Kindle. Book excerpt: Irrigation system performance assessment and diagnosis. performance, performance indicators and performance frameworks. Design-management environments and irrigation system management objectives. Performance in fixed division systems. Performance in gated division systems. Lessons learned from the case studies. Proposition for improving performance. Sustaining irrigation performance.
Author : Timothy Gerard Kelley
Publisher :
ISBN 13 :
Total Pages : 430 pages
Book Rating : 4.:/5 (31 download)
Download or read book Evaluating Irrigation System Performance written by Timothy Gerard Kelley and published by . This book was released on 1989 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Melisew Misker Belay
Publisher : LAP Lambert Academic Publishing
ISBN 13 : 9783847327011
Total Pages : 120 pages
Book Rating : 4.3/5 (27 download)
Download or read book Irrigation Performance Evaluation written by Melisew Misker Belay and published by LAP Lambert Academic Publishing. This book was released on 2012-01 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt: The principal objective of surface irrigation systems evaluation is to identify management practices and system configurations that is feasible and effective to improve irrigation efficiency. Evaluation plays a fundamental role in improving surface irrigation systems by providing the information required for design, model validation and advising irrigators on how to improve their systems and management practices. The technical performance of the schemes was evaluated by considering conveyance efficiency, application efficiency, dependability of irrigation interval and sustainability of irrigation.Moreover, availability of institutional and support services, market availability and conflict management were investigated through questionnaire administered to beneficiary farmers and other stakeholders. The conveyance loss in Sanka traditional irrigation is greater than Golina modern irrigation scheme but in Sanka participation of farmers and sense of ownership is rated to be 100%.Therefore, if proper canal and canal structures are in place and water users associations are empowered more in order for it to enforce its bylaws it will augment the efficiency of the scheme exceedingly.
Author : Bobby A. Stewart
Publisher : CRC Press
ISBN 13 : 9780824709488
Total Pages : 1114 pages
Book Rating : 4.7/5 (94 download)
Download or read book Encyclopedia of Water Science (Print) written by Bobby A. Stewart and published by CRC Press. This book was released on 2003-07-31 with total page 1114 pages. Available in PDF, EPUB and Kindle. Book excerpt: PRINT/ONLINE PRICING OPTIONS AVAILABLE UPON REQUEST AT [email protected]
Author : W. H. Kloezen
Publisher : IWMI
ISBN 13 : 9290903597
Total Pages : 47 pages
Book Rating : 4.2/5 (99 download)
Download or read book Assessing Irrigation Performance with Comparative Indicators written by W. H. Kloezen and published by IWMI. This book was released on 1998 with total page 47 pages. Available in PDF, EPUB and Kindle. Book excerpt: Describes and evaluates the application of IWMI's minimum set of performance indicators to the Alto Rio Lerma Irrigation District, and compares this with the application of a small set of process performance indicators.
Author : John L. Merriam
Publisher :
ISBN 13 :
Total Pages : 346 pages
Book Rating : 4.E/5 ( download)
Download or read book Farm Irrigation System Evaluation written by John L. Merriam and published by . This book was released on 1978 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Hector M. Malano
Publisher : Food & Agriculture Org.
ISBN 13 : 9789251046180
Total Pages : 56 pages
Book Rating : 4.0/5 (461 download)
Download or read book Guidelines for Benchmarking Performance in the Irrigation and Drainage Sector written by Hector M. Malano and published by Food & Agriculture Org.. This book was released on 2001 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many formal irrigation schemes are performing inefficiently for a number of reasons, among which the poor performance of irrigation institutions is one. Benchmarking may be defined as the identification and application of organisation specific best practices with the goal of improving competitiveness, performance and efficiency of such schemes. These guidelines are neither perfect nor final; rather, they represent the beginning of a long and exciting process of benchmarking in the irrigation and drainage sector.
Author :
Publisher :
ISBN 13 :
Total Pages : 658 pages
Book Rating : 4.:/5 (31 download)
Download or read book The Field Illustrated written by and published by . This book was released on 1913 with total page 658 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Neba Michael Ambe
Publisher :
ISBN 13 :
Total Pages : 136 pages
Book Rating : 4.3/5 (129 download)
Download or read book Characterizing Irrigation Environmental Efficiency Based on Distribution Uniformity and Irrigation Management written by Neba Michael Ambe and published by . This book was released on 1995 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 : Ahmad Wais Basiri
Publisher : LAP Lambert Academic Publishing
ISBN 13 : 9783659195730
Total Pages : 172 pages
Book Rating : 4.1/5 (957 download)
Download or read book Application of Benchmarking to Assess and Compare of Irrigation Sys written by Ahmad Wais Basiri and published by LAP Lambert Academic Publishing. This book was released on 2012-07 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study applies a benchmarking approach to evaluate and compare the Performance Efficinencies PE of Jui-Naw main canal irrigation system, situated in the lower Hari-Rod river basin of Afghanistan. In this study, a set of performance indicators are used to evaluate and compare irrigation systems within the system comprising of head (U/S), middle (Mid/S) and tail (D/S). Secondly, a data envelopment analysis (DEA) is applied to measure the efficiency of farmers in wheat farms at different sections of the main canal. Evaluation of irrigation performance indicators was carried out using three groups of performance indicators namely, Service Delivery Performance (SDP), Financial Performance (FP) and Productivity Efficiency Performance (PEP). These performance indicators are also used to compare the performance of four other irrigation systems. The comparative performance indicators developed by IWMI were adopted in order to evaluate the efficiency of the irrigation systems. The overall result of this study can be used to support the decision making and guidelines for the planners, governments, and donor agencies.
Author :
Publisher :
ISBN 13 :
Total Pages : 24 pages
Book Rating : 4.X/5 (3 download)
Download or read book Methods for Evaluating Irrigation Systems written by and published by . This book was released on 1956 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Samantha P. Rosado
Publisher :
ISBN 13 : 9780355855975
Total Pages : 98 pages
Book Rating : 4.8/5 (559 download)
Download or read book Irrigation Efficiency and Water Balance of the Little Wind Unit on the Wind River Indian Reservation in Wyoming written by Samantha P. Rosado and published by . This book was released on 2017 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt: In semi-arid states such as Wyoming that receive 12 inches or less of rainfall annually, supplemental irrigation water is paramount to maintain productive agricultural systems. Anytime water is stored, transported, or distributed, however, only a fraction makes it to its final destination. Assessment and updating of irrigation system efficiency, and infrastructure, is a recognized need on many western reservations. Irrigation efficiency hasn't been quantified for the Little Wind Unit, the largest irrigation system on the Wind River Indian Reservation (WRIR) in Wyoming, since 1994, when investigators found overall irrigation efficiency to be between 35 and 40%, equating to 4,000 to 8,000 acre-feet of water loss during the irrigation season. In this study, two different methods were used to quantify and locate potential water losses in the Little Wind Unit: the calculation of an agricultural water balance and targeted geophysics techniques. A water balance was developed for May through September from 1990 to 2013 to quantify monthly losses and identify long-term changes in the larger system. In addition, GEM2, an electromagnetic geophysical sensor that measures resistivity with depth, was used to determine seepage loss for the main delivery canal. Synoptic flow measurements were used to assess the effectiveness of the GEM2 in mapping and quantifying seepage losses and to calculate conveyance efficiency. The purpose of the research was to generate site-specific information for the WRIR to assess irrigation system water losses for improved irrigation efficiency for a group of irrigation systems that have historically contributed to unsatisfied water demands among water users. Results of the twenty-four year water balance revealed large errors and data gaps associated with the inflows, outflows, diversions, and precipitation data, which made closing the water balance impossible and identified specific needs for better data. Irrigation efficiencies ranged from 50 to 70% for the LWU, but large variability impacts the understanding of irrigation efficiency. Economic assessment showed that in some years more profits could have been realized with better irrigation efficiencies. Irrigation efficiency decreased linearly with increased diversions for the study period, showing no difference in terms of management (diversions) in wet or dry years. Conveyance efficiencies for reaches measured in the main canal of Ray were greater than 85%. Based on the results, greater temporal and spatial distribution data are needed to fully assess irrigation system performance, in order to make agriculture on the Reservation productive and sustainable.
Author : Marinus Gijsberthus Bos
Publisher : Cabi
ISBN 13 : 9780851999678
Total Pages : 158 pages
Book Rating : 4.9/5 (996 download)
Download or read book Irrigation and Drainage Performance Assessment written by Marinus Gijsberthus Bos and published by Cabi. This book was released on 2005-01-01 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book draws together the knowledge that has been gained in irrigation and drainage performance assessment over the last 10 to 15 yers. Performance assessment is an essential management task. If the use of water for irrigation is to be improved, then we must understand current levels of performance and identify measures for improvement. This book provides guidelines to enable practitioners to apply the process and procedures that have evolved. Developed by a working group of the International Commission on Irrigation and Drainage (ICID), it provides a theory and practice of how to audit and assess the performance of irrigation and drainage schemes. This book will be of interes to researchers and professionals in irrigation, drainage, soils and agricultural engineering.
