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| Web URL(s): | http://www.irrigation.org/IA/FileUploads/IA/Resources/TechnicalPapers/2011/CatchCanPlacementHeightAndNozzleTrajectoryEffectsOnDistributionUniformity.pdf
Last checked: 10/10/2017
Requires: PDF Reader |
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| Publication Type:
| Proceedings |
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| Author(s): | Hattendorf, Mary J.;
Crookston, Mark A. |
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| Author Affiliation: | Hattendorf: Water Management & Conservation Specialist, Northern Colorado Water Conservancy District, Berthoud, CO; Crookston: Manager, Irrigation Management Services Dept., Northern Colorado Water Conservancy District, Berthoud, CO |
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| Title: | Catch can placement, height, and nozzle trajectory: Effects on distribution uniformity |
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| Section: | Landscape & golf
Other records with the "Landscape & golf" Section
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| Source: | Irrigation Show 2011: Technical Session Proceedings. 2011, p. 1-8. |
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| Publishing Information: | [Falls Church, Virginia]: [Irrigation Association] |
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| # of Pages: | 8 |
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| Keywords: | TIC Keywords: Can test; Evaluations; Irrigation audit; Irrigation uniformity; Nozzles; Sprayer calibration; Sprinkler spacing
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| Abstract/Contents: | "Catch can audits are a critical component of irrigation system evaluations. Recent experiences with catch can height and sprinkler nozzle trajectory showed that these variables were very important factors in distribution uniformity and should be considered in irrigation system performance metrics. Lower quarter distribution uniformity (DUlq) was evaluated for nozzle trajectories ranging from 20° to 27° and catch can heights relative to nozzles. A small (30' x 15') indoor irrigation system was used to conduct the tests using Toro Precision Series Spray Nozzles (T- Spray, 27° trajectory), Toro Precision Series Rotating Nozzles (T-RN, 20° trajectory), and MP Rotators (MP-R, 25° trajectory). Horizontal catch can placement relative to nozzles followed IA audit guidelines and was not varied based on pre-test evaluations. Twenty-eight CalPoly catch cans were uniformly distributed throughout the test system and leveled. Riser heights were varied to simulate catch can rims at ground level (CCRG) and catch can tips at ground level (CCTG). Distribution uniformities for T-RN ranged from 70% (CCRG) to 50% (CCTG); DUlq ranges for MP-R at CCRG were 81% and CCTG, 79%; Dlq U ranges for T-Spray at CCRG and CCTR were 78% and 77%, resp. The results indicate that the true performance of the 20° trajectory nozzle at soil level was not captured at normal catch can height and that alternate methods of performing irrigation audits on low trajectory nozzles should be explored." |
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| Language: | English |
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| References: | 5 |
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| Note: | Pictures, color
Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Hattendorf, M. J., and M. A. Crookston. 2011. Catch can placement, height, and nozzle trajectory: Effects on distribution uniformity. p. 1-8. In Irrigation Show 2011: Technical Session Proceedings. [Falls Church, Virginia]: [Irrigation Association]. |
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| Web URL(s):
http://www.irrigation.org/IA/FileUploads/IA/Resources/TechnicalPapers/2011/CatchCanPlacementHeightAndNozzleTrajectoryEffectsOnDistributionUniformity.pdf
Last checked: 10/10/2017
Requires: PDF Reader |
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MSU catalog number: b9924931 |
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