Study on the behavior of some seedless grapevine varieties under various pruning methods

Abstract

The main aim of the work was to study the behavior of some seedless grapevine varieties (Apiren negru de Grozești, Apiren roz and Apiren Bessarabean) to various pruning methods of the canes at 2+3-4 buds and 2+7-8 buds, the reaction of each variety to the norming of inflorescences/grapes. The parameters characterizing the production and quality of grapes were determined: the average weight of a grape, the yield per plant and hectare, the sugar and titratable acidity content of the must. The results are generalized over three years of study (2019-2021) and, from a statistical point of view, a significant influence of the climatic conditions of the years on the values of the studied characters was found. The significant difference between the variants on pruning length was found only in the accumulation of sugar content for the Apiren roz variety and insignificant in the rest of the characters.