Comportamiento agronómico de albariño (Vitis vinífera. l) en diferentes condiciones agroclimáticas

The trial was executed in the 2020-2021 season in southeastern Uruguay, in the department of Maldonado, in a commercial vineyard near Pueblo Garzón. The work consisted in evaluating the agronomic performance and enological potential of the white variety, Albariño (Vitis vinifera. L). This document constitutes a background study of this promising variety through the analysis of the varietal response to different geographical conditions of altitude and slope. The hypotheses proposed were: different topographic conditions influence plot temperature (meso-climate); differences in altitude and slope and meso-climate influence the agronomic behavior (phenology, yield) and enological potential (primary and secondary grape composition) of Albariño. The experimental design was a multisite survey where each plot represents a topographic situation taken as a treatment, adding ten treatments in total with two replications per treatment, which had a temperature sensor (TinyTag). The treatments were chosen to represent the distribution of the 4 cardinal points in the vineyard and, based on the characteristics of altitude and slope, each plot was classified into three categories; based on altitude (low category: 72 - 95 masl; medium category: 96 - 117 masl; high category: 118 - 140 masl) and slope (category 1: 0 - 5.8°; category 2: 5.9 - 8.7°; category 3: 8.8 - 11.6°). The analysis of macro-climatic and meso-climatic was made from the calculation of bioclimatic indices. Vegetative growth, phenology, yield components, plant balance and enological potential (primary and secondary grape composition) were also evaluated. The different topographic conditions influenced the temperature of the plots, mainly due to the influence of altitude defined by exposure to the sea. The agronomic and enological potential of Albariño was influenced by the differences in altitude and slope and meso-climate. In plots located in intermediate slope conditions, we observed the achievement of higher yields (14500 kg/ha), lower disease weight and higher sugars (202.5 g/l).