Fertilizante mineral misto na 'Tannat' no Município de Dom Pedrito

Abstract

The mixed mineral fertilizers available, which have the compositions of some macronutrients and micronutrients combined, which provide an improvement in various metabolic and physiological processes of the plants, being important for a greater Production of its culture. In this sense, the present study aimed to evaluate agronomic and physicochemical responses of ' Tannat ' in a vineyard located in Dom Pedrito-Rio grande do Sul (RS), located in the region of Campanha Gaúcha. For this purpose the experiment was conducted in the cycle of 2017/2018, in the ' Tannat ' grafted on ' SO4 ', in a private vineyard, four years old, conducted in the double "Guyot" system. The treatments were applied from stage 17 according to the Eichoorn and Lorenz Scale (1977) of the cultivar, were: T1 = four applications of distilled water in the whole plant; T2 = An application of mineral fertilizer only in the bunch at the recommended dose (500 ML. Ha-1); T3 = Two applications fortnightly in the whole Vine, at the recommended dose (500ml. Ha-1) and T4 = Four applications in the whole Vine, at the recommended dose (500 ML. Ha-1). The experiment consisted of 4 treatments, with 2 replications with 7 seedlings per repetition, totaling 14 vines per treatment, and 56 vines for the whole experiment. During the experiment, the variables of productivity, chlorophyll and follow-up of fruit maturation were evaluated through the collection of berries on three occasions during the grape maturation period. The present experiment, the mixed mineral fertilizer tested did not contribute to an improvement in the variables responses analyzed in the fruit and the wort of ' Tannat '.