INFLUENCE OF BUSH LOAD WITH SHOOTS OF KRASNOSTOP AZOS VARIETY ON GRAPES AND WINE QUALITY

Abstract

The results of studies on the optimal load of bushes with shoots on fruitfulness, productivity of a grapevine plant and quality indicators are presented. The purpose of the work is to identi-fy the optimal load that allows you to manage the productivity, quality of grapes and wine of Krasnostop AZOS variety. The work was car-ried out in the industrial vineyards of the Temryuk district of the Krasnodar Territory, st. Starotitoravskaya agricultural firm LLC "Fana-goria-South". The objects of research were grapes and wine material from the Krasnostop AZOS variety. The area of the experimental plot is 1 ha. Planting scheme: 3×2 m. The shape of the bushes is a spiral high-stem cordon. The grape culture is own-rooted. Agrotechnical studies were carried out according to generally accepted methods in viticulture. Wine materials were prepared by the method of microwine-making according to National Standsrt 52523-2006. Three load rates were tested: 35, 40, 46 pcs/bush. In terms of fruitfulness, variants with a load of 40 and 35 shoots per bush were iden-tified as the best (the percentage of fruitful shoots was 87 and 88). According to the coef-ficient of fruiting (K1) and fruitfulness (K2), a variant with a load of 46 shoots per bush stood out, and had the following indicators ‒ 1.6, respectively 1.9. According to the yield size, the variant with a maximum load of 46 shoots per bush ‒ 16.8 t/ha with a low mass concentra-tion of sugars in the berry juice (22.7 g/dm3) was selected. High sugar values were recorded in the variant with a low load (35 shoots per bush) ‒ 24.4 g/dm3. The concentrations of ti-tratable acids differed slightly in all variants of the experiment. The highest tasting score of 8.3 was obtained in the variant with a load of 35 shoots per bush.