Assessment of the influence of foliar treatment on productivity and phenolic maturity of grapes

An urgent task of today for grape growers is to find effective ways achieve the compliance conditional parameters phenolic ripeness grapes while maintaining high cropping capacity. In this study influence foliar treatment with nitrogen-containing preparations "Siamino Pro 500" on productivity and maturity ‘Cabernet-Sauvignon’ variety was investigated. Studies were carried out during 2018-2019. Grape degree assessed by Glories method, based determining total extractable anthocyanin potential grapes. It shown that, as a result experimental scheme processing, capacity increased 10- 14%, well bunch weight - 13 16%. Use preparation contributed onset technical at earlier period compared control. The content anthocyanins extracted from skins 49- 56%. Experimental samples characterized higher titratable acids (by 1.4 1.2 g/l) lower sugar accumulation 9 16 g/l). Positive processing organoleptic properties wines observed.