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Web URL(s):http://www.nelsonirrigation.com/media/resources/MP_ASABE_Paper.pdf
    Last checked: 03/07/2016
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Publication Type:
i
Refereed
Author(s):Solomon, K. H.; Kissinger, J. A.; Farrens, G. P.; Borneman, J.
Author Affiliation:Solomon: Agricultural Engineer, Morro Bay, California; Kissinger: Landscape Irrigation Specialist, Irrigation & Landscape Services, Fullerton, California; Farrens: Director, Water Management Program, Walla Walla Community College, Walla Walla, Washington; Borneman: Vice President, Educational Services, Ewing Irrigation Products, Fremont, California
Title:Performance and water conservation potential of multi-stream, multi-trajectory rotating sprinklers for landscape irrigation
Section:Soil & water
Other records with the "Soil & water" Section
Source:Applied Engineering in Agriculture. Vol. 23, No. 2, 2007, p. 153-163.
Publishing Information:St. Joseph, MI: American Society of Agricultural Engineers
# of Pages:11
Keywords:TIC Keywords: Irrigation efficiency; Irrigation equipment; Irrigation system design; Irrigation systems; Irrigation uniformity; Landscape services industry; Sprinkler heads; Water conservation; Water-saving techniques
Abstract/Contents:"Multi-stream, multi-trajectory rotating (MSMTR) sprinklers represent an alternative to fixed spray heads for the irrigation of small landscape areas. Preliminary investigations have suggested that MSMTR sprinklers can apply water with higher distribution uniformities than fixed sprays, offering the potential for water conservation. This article presents the results of field audits comparing the performance of fixed spray and MSMTR sprinklers in landscape irrigation. Individual zones were audited before and after a conversion from fixed spray to MSMTR sprinklers. Average low quarter distribution uniformity (DULQ) improved by 0.26, from 0.44 to 0.70, after the conversions. Average low half run time multiplier (RTMLH) decreased by 0.39. New performance measures, directly related to water conservation, were developed and applied to the field audit data. Water conservation diagrams were used to illustrate performance improvements and the potential for water conservation due to improved performance. Estimated water conservation potential due to the conversion from fixed spray to MSMTR sprinklers depends on pre-conversion uniformity and choice of run time multiplier (RTM). The average water conservation potential estimated for the fixed spray to MSMTR conversion ranged from 22% to 40% of the pre-conversion application depending on pre-conversion choice of RTM. A good single-point estimate for water conservation potential due to fixed spray to MSMTR conversion is 31%. MSMTR sprinklers have lower precipitation rates than fixed spray heads, and may be expected to need longer run times to meet a given required amount. The higher uniformity of the MSMTR sprinkler partially mitigates this. Sample calculations assuming no runoff from the higher precipitation rate fixed sprays indicate the net MSMTR systems may need to run 1.7 to 2.3 times as long as fixed sprays used to run to deliver the same net application."
Language:English
References:27
Note:Pictures, color
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ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Solomon, K. H., J. A. Kissinger, G. P. Farrens, and J. Borneman. 2007. Performance and water conservation potential of multi-stream, multi-trajectory rotating sprinklers for landscape irrigation. Appl. Eng. Agric. 23(2):p. 153-163.
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http://www.nelsonirrigation.com/media/resources/MP_ASABE_Paper.pdf
    Last checked: 03/07/2016
    Requires: PDF Reader
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