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Meteorological parameters effect on diurnal and nocturnal transpiration and stomatal conductance grapevine

A. Montoro1, R. López-Urrea1, J. M. Sánchez2 ;1Instituto Técnico Agronómico Provincial-FUNDESCAM, 2 University of Castilla La Mancha, Spain

Meteorological parameters effect on diurnal and nocturnal transpiration and stomatal conductance grapevine

An experiment was carried out in a semi-arid area of Spain (Albacete) with the objective of quantifying the effect of different meteorological parameters on transpiration and stomatal conductance grapevine cv. Tempranillo.

Measurements of evapotranspiration were taken in a weighing lysimeter during 2015. Air temperature, relative humidity, wind velocity and solar radiation were measured with an automated weather station located over a reference grass surface less than 100 m from the vineyard lysimeter.

The sample frequency was 1s, and a mean value was recorded with a datalogger (CR10X, Campbell Scientific) every 15 minutes. Stomatal conductance was measured four times on some days.

The result shows how evapotranspiration and conductance are affected by the different meteorological parameters. 

Keywords: Diurnal evapotranspiration, nocturnal evapotranspiration, meteorologigal variables, lysimeter, stomatal conductance

Paper presented at the XI International Terroir Congress, July 2016, McMinnville, Oregon (USA).  

Published on 27/11/2017
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