Training system on yield and quality of Vitis vinífera L. Var. Macabeu, in Lleida, España

This research was carried out in the municipality of Vallbona de les Monges Lleida, Spain at the L’Olivera Cooperativa winery during the 2013 vegetative cycle. The training systems studied were LYS (constituted by an ascending and a descending monoplane) and ascending monoplane (AM). Impact on training system on yield and grape (Vitis vinifera L.) Var. “Macabeu” must quality, agronomic performance, canopy structure, water potential, yield components and must quality, among other variables, was evaluated. A single classification analysis of variance and comparison of means with Tukey’s test were performed. Plants of the LYS system had a greater total exposed leaf area (TELA) of 18 153.5 m2∙ha-1, a lower number of leaf layers (NCH, 2.4), greater exposure of grape clusters than MA. Shoot percentage was 97 %, yield 31.72 t-ha-1, and 11.6 probable alcohol content. These variables had significant statistical differences (P<0.05). The MA system had a TELA 50 % lower than LYS, higher NCH by 16.77 % and greater shading of the clusters: a shoot percentage of 99 %. The LYS system had a higher probable alcohol content, lower fruit acidity, lower grape weight, and higher number of clusters. In conclusion, the training system influences must quality and yield, and the LYS system showed better results.