The Quality of Grapes of the Moldova Variety According to the Foliar Fertilization System in the Phenophase of the Berry Growth

Abstract

The fertilization of the vineyards is an important and sometimes decisive technological process in the production technology of table grapes. Knowing the nutritional needs of the grapevine in different phenophases ensures obtaining homogeneous, quantitative and qualitative harvests, but also increases the plants' resistance to adverse environmental conditions. The aim consists in the analysis of the quality indices of the Moldova table grape variety, following the application of Ca treatments, in the phenophase of berry growth. In the research, different variants of application of treatments with Ca (Calcinite) were studied, with 1-4 treatments, in different periods. Observations, measurements and determinations were carried out in the field, as well as chemical laboratory analyzes according to the methods approved in viticulture. The growth of the berries on the vine begins a few days after flowering and lasts until the grapes enter the field. Following the study, a positive influence of calcium treatments on grain firmness was observed in the variants with the highest number of foliar applications. The use of individual or combined calcium fertilization of the Moldova variety in the production conditions with 1-4 post-fertilization treatments, depending on the conditions of the year, positively influenced the quality of the harvest.