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Title

Evapotranspiration and crop coefficients of rice (Oryza sativa L.) under sprinkler irrigation in a semiarid climate determined by the surface renewal method

AuthorsMoratiel Yungueros, Rubén; Martínez-Cob, Antonio
Issue Date2013
PublisherSpringer
CitationMoratiel R, Martínez-Cob A. Evapotranspiration and crop coefficients of rice (Oryza sativa L.) under sprinkler irrigation in a semiarid climate determined by the surface renewal method. Irrigation Science 31 (3): 411-422 (2013)
AbstractThe evapotranspiration (ETc) of sprinkler-irrigated rice was determined for the semiarid conditions of NE Spain during 2001, 2002 and 2003. The surface renewal method, after calibration against the eddy covariance method, was used to obtain values of sensible heat flux (H) from high-frequency temperature readings. Latent heat flux values were obtained by solving the energy balance equation. Finally, lysimeter measurements were used to validate the evapotranspiration values obtained with the surface renewal method. Seasonal rice evapotranspiration was about 750–800 mm. Average daily ETc for mid-season (from 90 to 130 days after sowing) was 5.1, 4.5 and 6.1 mm day-1 for 2001, 2002 and 2003, respectively. The experimental weekly crop coefficients fluctuated in the range of 0.83–1.20 for 2001, 0.81–1.03 for 2002 and 0.84–1.15 for 2003. The total growing season was about 150–160 days. In average, the crop coefficients for the initial (Kcini), midseason (Kcmid) and late-season stages (Kcend) were 0.92, 1.06 and 1.03, respectively, the length of these stages being about 55, 45 and 25 days, respectively.
Description38 Pags., 8 Figs., 6 Tabls. The definitive version is available at: http://www.springerlink.com/content/0342-7188/
Publisher version (URL)http://dx.doi.org/10.1007/s00271-011-0319-8
URIhttp://hdl.handle.net/10261/51194
DOI10.1007/s00271-011-0319-8
ISSN0342-7188
E-ISSN1432-1319
Appears in Collections:(EEAD) Artículos
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