Your search found 19 records
(Location: IWMI-HQ Call no: PER Record No: H05826)
A lateral canal in a southwestern U. S. irrigation district was instrumented for continuous monitoring. Deliveries were flexibly scheduled; farmers arranged timing, rate and duration with the district. The distribution of measured variables showed that the lateral was operated under a wide variety of demand and operational conditions and that farm delivery flows were frequently not uniform due to changing conditions along the lateral. Flows that are unpredictably variable affect the performance and evaluation of on-farm application systems and, unless controlled, can negate the benefit of flexible scheduling (more precise management). Statistical analysis of 286 deliveries to nine farm turnouts identified a number of sources on nonuniform flows which were a combination of canal hydraulics and operational characteristics. Time of year that deliveries occurred was shown to affect uniformity, as were median flow rate, delivery duration, and location of turnouts, both within a pool between two check structures and along the lateral. Identifying source of nonuniformities is an important first step in devising structure and operational control to improve delivery uniformity.
(Location: IWMI-HQ Call no: P 1518 Record No: H07018)
3 Dedrick, A. R.. 1989. Surface-drained level-basin systems. In Rydzewski, J. R.; Ward, C. F. (Eds.) Irrigation theory and practice. Proceedings of the International Conference, University of Southampton, 12-15 September. London: Pentech Press. pp.566-575.
(Location: IWMI-HQ Call no: 631.7 G000 RYD Record No: H07544)
The management of surface-drained level basins, where a portion of the initially applied water is drained out from the inlet end of the irrigated basin, is reviewed. Design procedures regarding basin and channel layout, and land leveling are presented. Drainage is made possible by properly configuring of an earthen water supply channel relative to the basin surface. The proportion of drainable water from furrows (ratio of the volume drained from a furrow to the volume stored in the furrow at time of irrigation cutoff) ranged from 25% to 45% depending on the furrow length. Such drainage quantities would result in increased potential application efficiency. The utilization of the surface-drained level basin systems for rice production in rotation with other field crops is discussed.
(Location: IWMI-HQ Call no: PER Record No: H07938)
(Location: IWMI-HQ Call no: PER Record No: H08809)
(Location: IWMI-HQ Call no: PER Record No: H08869)
(Location: IWMI-HQ Call no: P 2383 Record No: H011272)
8 MSIDD DA Core Team; Dedrick, A. R.; Clemmens, A. J.; Clyma, W.; Gibson, R. D.; Levine, D. B.; Replogle, J. A.; Rish, S. A.; Ware, R. E.; Wilson, P. N. 1992. The Demonstration Interagency Management Improvement Program (MIP) for irrigated agriculture in the Maricopa-Stanfield Irrigation and Drainage District (MSIDD). Vol. 1 - The Diagnostic Analysis (DA) report of the MSIDD area MIP. Washington, DC, USA: USDA. Agricultural Research Service. ii, 97p. (IMIP document 5)
(Location: IWMI-HQ Call no: 631.7.8 G430 MSI Record No: H011523)
9 de Sousa, P. L.; Dedrick, A. R.; Clemmens, A. J.; Pereira, L. S. 1993. Benefits and costs of laser-controlled leveling - A case study. In ICID, 15th International Congress on Irrigation and Drainage, The Hague, Netherlands, 1993: Water management in the next century: Transactions: Vol.1-C, Question 44, R73-R103: Planning and design of irrigation and drainage systems. New Delhi, India: ICID. pp.1237-1247.
(Location: IWMI-HQ Call no: ICID 631.7 G000 ICI Record No: H015351)
10 Dedrick, A. R.; Clyma, W.; Tenney, O. L.; Clemmens, A. J.; Gibson, R. D.; Levine, D. B.; Replogle, J. A.; Rish, S. A.; Ware, R. E.; Wilson, P. N. 1993. A demonstration irrigation management improvement program. ICID, 15th International Congress on Irrigation and Drainage, The Hague, Netherlands, 1993: Water management in the next century: Transactions: Vol.1-E, Question 45, R1-R29: Irrigation and drainage systems management - Institutional and financial interrelationships. New Delhi, India: ICID. pp.95-104.
(Location: IWMI-HQ Call no: ICID 631.7 G000 ICI Record No: H015613)
11 Solomon, K. H.; Dedrick, A. R.. 1995. Standards development for microirrigation. In Lamm, F. R. (Ed.), Microirrigation for a changing world: Conserving resources/preserving the environment: Proceedings of the Fifth International Microirrigation Congress, Hyatt Regency Orlando, Orlando, Florida, April 2-6, 1995. St. Joseph, MI, USA: ASAE. pp.303-313.
(Location: IWMI-HQ Call no: 631.7 G000 LAM Record No: H018865)
12 Dedrick, A. R.. 1991. Surface-drained level basins for rice production. In Ritter, W. F. (Ed.), Irrigation and drainage: Proceedings of the 1991 National Conference sponsored by the Irrigation and Drainage Division of the American Society of Civil Engineers and the Hawaii Section, ASCE, Honolulu, Hawaii, July 22-26, 1991. New York, NY, USA: ASCE. pp.129-137.
(Location: IWMI-HQ Call no: 631.7 G430 RIT Record No: H019881)
13 Dedrick, A. R.. 1997. Improvement of surface irrigation in the Tadla Irrigation Project. Tadla Resources Management Project report prepared by Chemonics International Inc.; Resources Management International Inc.; ADC; National Cooperative Business Associations and University of California, Davis. iii, 45p. (Report no.63)
(Location: IWMI-HQ Call no: P 4812 Record No: H022178)
(Location: IWMI-HQ Call no: P 470 Record No: H022184)
(Location: IWMI-HQ Call no: PER Record No: H026546)
(Location: IWMI-HQ Call no: PER Record No: H026547)
(Location: IWMI-HQ Call no: PER Record No: H026548)
(Location: IWMI-HQ Call no: PER Record No: H026549)
(Location: IWMI-HQ Call no: PER Record No: H026551)
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