Title: Comparison of reference evapotranspiration inside and outside the glasshouse

Authors: Mohammad Javad Amiri; Jahangir Abedi-Koupai; Saeid Eslamian

Addresses: Department of Water Engineering, College of Agriculture, Fasa University, 74617-81189, Fasa, Iran ' Department of Water Engineering, College of Agriculture, Isfahan University of Technology, 84156-83111, Isfahan, Iran ' Department of Water Engineering, College of Agriculture, Isfahan University of Technology, 84156-83111, Isfahan, Iran

Abstract: In this study daily evaporation rate from class A pan and reduced pan installed inside the glasshouse with a class A pan installed outside were compared. The results showed that the mean weekly ET₀ value estimated by the class A pan installed outside and inside the glasshouse were 27.6 mm and 17.6 mm respectively, and 20.3 mm for the reduced pan. The ET₀ in the glasshouse was found to be 64% of outdoor ET₀. With regard to the comparisons between the weekly ET₀ values estimated by the class A pan and reduced pan, both inside the glasshouse, coefficient of correlation was obtained 0.95 for the reduced pan method and with comparing between the weekly ET₀ values estimated by the class A pan outside the glasshouse and those estimated by the different methods inside, coefficient of correlation was obtained 0.71 for the class A pan and 0.68 by the reduced pan.

Keywords: evapotranspiration; glasshouse; class A pan; reduced pan.

DOI: 10.1504/IJGENVI.2018.095040

International Journal of Global Environmental Issues, 2018 Vol.17 No.4, pp.297 - 306

Received: 18 Feb 2016
Accepted: 20 May 2016
Published online: 01 Oct 2018 *

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