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| Web URL(s): | http://www.irrigation.org/IA/FileUploads/IA/Resources/TechnicalPapers/2002/ComparisonOfCatchCanDistributionUniformityToSoilMoistureDistributionUniformityInTurfgrassAndTheImpactsOnIrrigationScheduling.pdf
Last checked: 10/30/2017
Requires: PDF Reader |
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| Publication Type:
| Proceedings |
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| Author(s): | Mecham, Brent Q. |
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| Author Affiliation: | CID and CIC and CLIA and Northern Colorado Water Conservancy District, Loveland, CO |
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| Title: | Comparison of catch can distribution uniformity to soil moisture distribution: Uniformity in turfgrass and the impacts on irrigation scheduling |
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| Section: | Turf
Other records with the "Turf" Section
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| Source: | Irrigation Show 2002: Technical Session Proceedings. 2002, p. [1-7]. |
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| Publishing Information: | [Falls Church, Virginia]: [Irrigation Association] |
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| # of Pages: | 7 |
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| Keywords: | TIC Keywords: Evaluations; Irrigation audit; Irrigation scheduling; Irrigation uniformity; Soil moisture; Water conservation; Water requirements
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| Abstract/Contents: | "By using the standardized procedure for performing irrigation audits to measure distribution uniformity and the net precipitation rate, an irrigation schedule can be calculated based on system performance in the field. Current practice is to determine the plant water requirement and then divide it by the lower quarter distribution uniformity to calculate the irrigation water requirement. (IWR = PWR / DULQ) Once the irrigation water requirement has been determined, the actual precipitation rate is used to calculate the number of minutes the system should run to meet the need (IWR / PR = minutes of run time). Frequently the proposed schedule based upon the audit will have longer run times than what are currently programmed in the controller. This has caused auditors to question the validity of the work they are performing and has been frustrating to explain the proposed schedule to the owner when it would result in additional water being applied to the landscape unnecessarily. In order to promote conservation of water resources, the proposed procedure that has been developed through the work of the IA's Water Management Committee helps account for the lateral movement of water within the root zone without changing the accepted methodology used to measure sprinkler system performance in the landscape. The proposed procedure focuses on how uniformity changes the minutes of run time that is programmed into the controller versus modifying the plant water requirement to calculate an irrigation water requirement. This alternate method will decrease the amount of water required compared to the current method without severely impacting most established landscapes." |
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| Language: | English |
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| References: | 0 |
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| Note: | Abstract appears as introduction
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Mecham, B. Q. 2002. Comparison of catch can distribution uniformity to soil moisture distribution: Uniformity in turfgrass and the impacts on irrigation scheduling. p. [1-7]. In Irrigation Show 2002: Technical Session Proceedings. [Falls Church, Virginia]: [Irrigation Association]. |
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| Web URL(s):
http://www.irrigation.org/IA/FileUploads/IA/Resources/TechnicalPapers/2002/ComparisonOfCatchCanDistributionUniformityToSoilMoistureDistributionUniformityInTurfgrassAndTheImpactsOnIrrigationScheduling.pdf
Last checked: 10/30/2017
Requires: PDF Reader |
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MSU catalog number: b9924931 |
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