ISHS Acta Horticulturae 732: VIII International Symposium on Canopy, Rootstocks and Environmental Physiology in Orchard Systems
CANOPY OBSERVATIONS OF A TABLE GRAPE VINEYARD: RADIATION BALANCE, ENERGY PARTITIONING AND CO2 FLUXES |
| Authors: | M. Nardino, O. Facini, T. Georgiadis, F. Rossi |
| Keywords: | carbon, evapotranspiration, micrometeorology, energy balance |
| Abstract:
An orchard carbon fixation between 5-11 µmol m-2 s-1 was recorded through the eddy covariance technique during the summer for a table grape in southern Italy. The total daily ecosystem exchange was equal to 2.07 g C/m2/day in 2001 and 1.68 in 2002, which was warmer. The latent heat of evapotranspiration was 40% Rn in 2001 and about 30% in 2002. Eddy covariance allowed estimation of the water use efficiency (WUE) of the vineyard, which averaged 0.0012 in 2001 and 0.0015 in 2002 at mid-day. WUE, determined at the canopy scale, is very important in those environments where water is a limiting factor and a correct irrigation schedule is necessary. | |
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