 Characterisation of evaporation and drift losses with centre pivotsJ.N. Ortíz, J.M. Tarjuelo and J.A. de Juan Agricultural Water Management, 2009, vol. 96, issue 11, 1541-1546 Abstract: The objective of this paper is to study evaporation and drift losses (EDLs) with two types of sprinklers: rotating spray plate sprinklers (RSPS) and fixed spray plate sprinklers (FSPS), both installed at two different heights (1 and 2.5m above the ground). A field test was carried out during three seasons at an irrigated plot with a centre pivot, in Albacete (Spain). The results show that EDLs were significantly higher with the FSPS placed 2.5m above the ground (FSPS 2.5) than with the RSPS placed 1m above the ground (RSPS 1). The EDLs obtained for the FSPS 2.5 combination were 8% for night irrigation events and 13.7% for daytime irrigation events. The lowest EDL values were registered with RSPS 1, ranging from 3.3 to 8.2% under night and day operation conditions, respectively. These results were obtained for an average wind speed of 1.3m/s at night and 3.5m/s during the day, and were normally below 5m/s. Keywords: Rotating; spray; plate; sprinklers; Fixed; spray; plate; sprinklers; Sprinkler; irrigation; Drop; diameter (search for similar items in EconPapers) Downloads: (external link) Related works: Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text Persistent link: https://EconPapers.repec.org/RePEc:eee:agiwat:v:96:y:2009:i:11:p:1541-1546 Access Statistics for this article Agricultural Water Management is currently edited by B.E. Clothier, W. Dierickx, J. Oster and D. Wichelns More articles in Agricultural Water Management from Elsevier |
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