University of Arizona Study Proves the Power of PRS

Date published: April, 2015
Location:
Karsten Turf Research Facility, University of Arizona
Site Type:
Commercial
The Challenge:
Compare the performance characteristics of rotors and sprays with PRS technology vs. similar products without.
Performed By:
University of Arizona Department of Soil, Water and Environmental Science
The Study:
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Eight different turf plots were evaluated (4 with PRS and 4 without) at different inlet pressure levels.
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In each case, 10 different tests were conducted measuring precipitation rate (PR), application efficiency (AE) and distribution uniformity (DU).
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Industry standard tests for DU included the use of “catch cans” with calculations made for low quarter distribution uniformity (DULQ) and low half distribution uniformity (DUHL).
The Results:
PRS showed marked improvements in the three key performance characteristics across the body of tests, particularly at inlet pressure levels that exceed the manufacturer recommended level.
Highlights:
Rain Bird PRS demonstrated improved performance, including:
- PRS rotors reduced water use by 15-22%, depending on psi
- PRS rotors greatly reduced misting
- PRS sprays reduced water use by 11-14%, depending on psi
- Distribution uniformity (DU) was improved, particularly in windy conditions