STUDY OF INFLUENCE OF NON-ROOT ACTION PREPARATION THE PRODUCTIVITY OF GRAPES AND THE QUALITY OF CHARDONNE VINE MATERIALS ON LOW FERTILITY SOIL
Now, there is no systematic scientific knowledge about the mechanisms of specific agrochemical preparations influence the qualitative and quantitative indicators of grapes and wine products obtained from areas with high rockiness, salinity and low level of soil fertility. The article presents the results of studies on the influence of various non-root products the quality and biological value of wine products from infertile soil. The objects of research were grapes of varying degrees of bush suppression and Chardonnay wine with treatment of non-root preparations (Gumel Lux, Phylloton, Agrumax). The experience of studying the influence of foliar top dressing the productivity of a grape plant and the wine quality was laid in the Anapa Region on grape plantings grafted on Berlandieri x Riparia Kober 5BB rootstock, 2006 planting, scheme of a 3x1.5, formation of two-armed cordon Cazenava. The results of studies in 2019 showed that the treatment of bushes growing on conditionally suitable soil with the studied non-root preparations had a positive effect on the yield and technological quality of Chardonnay grapes. Variants of normally developed bushes treated with Agrumax and Phylloton - 9.2 and 8.1 kg/bush, respectively, showed the best yield results. The most extractive in the experiment proved to be the wine materials with bush`s treatment of Gumel Lux, which affected the taste of these samples. In terms of organoleptic parameters, in the year of the study, the wine material from grapes processed with the Gumel Lux proved to be the best. In the experiment, there is a tendency to increase the organoleptic evaluation of white wine as the concentration of malic acid decreases. So, wine materials from Gumel Lux processing grapes were most highly rated, where the amount of malic acid was minimal - 2.1-2.2 g / dm<sup>3</sup>.