Grapevines hydric consumption as functions of soil type and trellis-training system

Abstract

In Bordeaux, France, measurements of volumetric soil unit were carried out through the use of a neutron in a experiment that aims to evaluate Sémillon grapevine plants hydric constimptions, grafted on Fercal. Plants in two soil types (clayish and sandy) and on two trellis-training systems (traditionel France systern and open lyre) were studied. The physico-chemical soil type characteristics influenced upon plants regularity in hydric constimption during ripening. Differences in lealf surface: area among trellis system were responsible for differences in hydric constimption at the end of growing season.