Energy balance and water consumption on a ‘Cabernet Franc’ grapevine vineyard

The energy balance method was used on a ‘Cabernet Franc’ vineyard trained on a vertical trellis system with branches attached to four wires to characterize the partition of the net solar radiation (SR) into the latent (LE), sensible and soil heat fluxes. As an average LE represented 79% of SR. Hourly variation of the energy balance components for sunny and cloudy days are shown. The water consumption for the different phenological phases were: pruning-flowering (99 mm), flowering-veraison (249 mm); veraison-harvest (201 mm). Considering the entire cycle (pruning-harvest) the water consumption was 549 mm.

grapevine; solar radiation; net radiation; latent heat flux