INVESTIGADORES
ROUSSEAUX Maria Cecilia
artículos
Título:
Soil evaporation beneath and between olive trees in a non-mediterranean climate under two contrasting irrigation regimes.
Autor/es:
FIGUEROLA, P. I.; ROUSSEAUX, M. C.; SEARLES, P.S
Revista:
JOURNAL OF ARID ENVIRONMENTS
Editorial:
ACADEMIC PRESS LTD-ELSEVIER SCIENCE LTD
Referencias:
Lugar: Amsterdam; Año: 2013 vol. 97 p. 182 - 189
ISSN:
0140-1963
Resumen:
Olive production with microirrigation systems has increased in the last 15 years in northwestern Argentina. An irrigation experiment in a commercial olive orchard was conducted from September 2005 to May 2007 under two different irrigation regimes (moderate MI, and high HI irrigation). From May 2006 to March 2007, soil evaporation was studied using microlysimeters located beneath olive trees, and spatial variability in a sunlit exposed area, and a shaded site was analyzed. The soil evaporation observed under the HI regime was higher than the equilibrium evaporation during the entire experimental period, while the soil evaporation under the MI regime was higher than the equilibrium evaporation only during end of autumn and winter. The high values of evaporation were associated with microadvection in the shaded area, but not in the sunlit sites between olive trees, based on the use of a microadvection coefficient. A model that takes into account the surface energybalance was used to estimate soil evaporation under the olive tree canopy. The first day afterirrigation the model underestimated the observed values due to microadvection in the areas wetted by the drip emitters, whereas subsequent days (>1 day) the effect of microadvection was not present.