Title: Novel approach to evaluate the dynamic variation of wind drift and evaporation losses under moving irrigation systems
Author: Sadeghi, Sayed-Hossein; Peters, Troy R.; Amini, Mohammad Z.; Malone, Sparkle L.; Loescher, Hank W.;
Source: Biosystems Engineering. 135: 44-53.
Publication Series: Scientific Journal (JRNL)
Description: The increased need for water and food security requires the development of new approaches to save water through irrigation management strategies, particularly for center pivot irrigation. To do so entails monitoring of the dynamic variation in wind drift and evaporation losses (WDELs) of irrigation systems under different weather conditions and for relatively long time periods. The historical catch can method has limited our ability to address this goal. Here, a new and easy-to implement methodology, called the strip test, was developed and validated against the catch can technique. Our results showed strong agreement between the catch can method and the strip test for determining the average water application efficiency (WAEz1-WDEL). Because the strip test method was measured for shorter intervals compared to the catch can method, the variables influencing WAE were able to be compared during each test. WAE had a large variance over time, which was controlled, in part, by wind speed (>4 m s!1). Site-specific characterisation of WDEL is needed to apply this technique. Once applied, it can provide a better understanding of WAE behaviour over the time, and enhance the capability of predicting results for the optimising water use in sprinkler irrigation.
Keywords: wind drift, evaporation loss, center pivot, catch can test, water application efficiency, strip test
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
XML: View XML
Sadeghi, Sayed-Hossein; Peters, Troy R.; Amini, Mohammad Z.; Malone, Sparkle L.; Loescher, Hank W. 2015. Novel approach to evaluate the dynamic variation of wind drift and evaporation losses under moving irrigation systems. Biosystems Engineering. 135: 44-53.
Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility