Fruit growing
and viticulture of South Russia
Quality of extract is one of the most important indicator of the wines of different types. Its content in the wine depends on the grape components and the products of the wine yeast vital activity. The concentration of the extractive grape components depends on the variety, the conditions of its growth and agrotechnology of cultivation. It is established a change in the mass concentration of extractive substances and testing estimation of white and red table wine materials depending on the soil maintenance, the load of grape bushes by harvest, the application of antitranspirants, the exposure of slopes and parts of the bunches used for wine materials. It is shown in our research that for Chardon grapes the turfing of soil in the comparison with the control black vapor soil a quantity of the extract was lowered on 12-15 %, with processing of grapes by antitranspirant on 12 %, with the cultivation of grapes only on the Southern slope on 9 %. In wine material from the Cabernet-Sovinon grapes the index of the extract increased both with soil turfing (by 1,1-1,4 time) and with a change in the load (by 1,1-1,2 times). This index was also higher on the Southern slopes, than that for the control version and for the Northern slopes (26,1 mg/dm3 against 23,1 mg/dm3). For the testing estimation of Chardon wine material the greatest positive influence was shown in the case of grapes processing by Vapor Gard antitranspirant as well the increase in the load of bush. The soil turfing led to an increase in wine material acidity and reduction in its testing estimation. The use of soil turfing, and Vapor Gard antitranspirant as well as the arrangement of bushes on the Southern slope led to an improvement in the organoleptic mer-its of wine materials from Cabernet-Sovinon grapes.
At the Magarach Institute, together with industry experts, studies were conducted to clarify the requirements for the assortment and quality of grapes, wine materials and finished products, as well as to improve the technology of muscat sparkling wines. It was shown that for the production of Muscat sparkling wines, it is possible to use the new grape varieties selected by the Magarach Institute, and the resulting wines, correspopond to certain conditions, are similar in quality to Muscat sparkling wines from Muscat Bely. To assess the typicality of the aromatic complex of sparkling wines produced, including us-ing the new grape varieties with muscat aroma, it is necessary to quantify the influence of the production method the accumulation and preservation of terpene spirits in the sparkling wines. In the conditions of the Southern coast of Crimea the peculiarities of accumulation of terpene alcohols (terpenes) in the sparkling wines from Muscat Bely and Aligote Muscat grapes depending on the method of their production are studied. It was found that the average content of terpenes in the sparkling wines prepared from the breeding variety of Aligote Muscat was higher than that in the control samples of sparkling wines from the Muscat Bely. When comparing the different technological schemes of Muscat sparkling wines production it have been found that the most perceptible Muscat tone is revealed in the sparkling wines, for the preparation of which instead liquor the must from grapes of the same varieties was used. Slightly weaker Muscat tone was observed in sparkling wines made from no ending fermented grape must. Based on the results of research in order to preserve the Muscat tone, it is recommended in the production of Muscat sparkling wines to reduce the aging period of champagne process of wine by yeast and to use for secondary fermentation or fresh must from grapes of Muscat varieties, or liquor prepared on the basis of wine materials from Muscat varieties.
The problem of using the grape pomaces from grape varieties of Merlot and Cabernet Sauvignon is discussed in the article. Experiments on extraction of biologically active substances and anthocyanins from sweet and fermented pomace by water and solutions of hydrochloric acid have been carried out. Data on the qualitative and quantitative composition of extracts of grape pomace were obtained. It was established that the content of acetic acid should be considered as the determining criterion for the quality of extracts from the pomace of red grapes. For the quality of the fermented pomace, also the ethanol content has a certain value. Extraction of extractive substances of various classes, and especially of potassium, magnesium, calcium, tartaric acid, significantly increases when using an acidic medium during extraction of sweet or fermented pomace. The applicability of the proposed extraction method for dry pomace is evaluated. The obtained results of the research confirm the possibility of using grape pomace of red grape varieties as a raw material for obtaining an extract enriched with various biologically valuable components. It is recommended to concentrate water extracts obtained from fermented grape pomace in order to ensure their stability. Extracts did not exceed the maximum permissible concentration limit for toxic metals. The extracts obtained had a saturated red color in a slightly acidic medium, which suggests their use as a corrective natural dye in the technology of functional or non-alcoholic beverages.
The purpose of these study is to identify and the create promising high-quality vari-eties and forms of apple trees of domestic and foreign breeding with a complex of valuable agrobiological signs for the formation of nature-like, resource-saving plantations. According to the results of years research, the high-quality apple elite forms of NCFSCHVW breeding and joint breeding of NCFSCHVW and All-RRIFCB with oligogenic and polygenic type of scab resistance and promising varieties for use in the production of foreign and domestic breeding have been identified. Study were carried out according to generally accepted programs and methods of breeding and variety study. The objects of research are apple genotypes of different ploidy and genetic origin. Based on the assessment of the complex of the main economic characteristics as early ripening, yield, fructification stability, scab resistance, quality and standard of fruits, the most promising varieties and forms of apple trees were selected for involvement in the breeding process and use in the production. A brief description of new elite forms with oligogenic (18/1-14-35) and polygenic (12/1-20-76) type of scab resistance is given in the article. For industrial cultivation, apple varieties are selected: Cameo, Granatovoe, Auvil Erli. Their brief description and estimated indicators of the economic efficiency of these varieties cultivation (sales profit from 442.8 to 550.2 thousand rubles / ha; profitability from 16.9 to 29.7 pp) is presented. The attention is fixed that the high rates of economic efficiency of these varieties cultivation are due to the most optimal combination of the complex of the most important economic traits: as fast fruitage, high yield, fruiting stability, high quality and standard of fruits, and for Granatovoe variety due to immunity to scab additionally.
Scientific-based use of clonal rootstocks of fruit crops is one of defining factors of increase in efficiency of horticulture and providing the competitiveness of domestic products. According to the Agreement for creative cooperation, in RUE Institute of Fruit Growing (Belarus) the apple rootstocks NC (North Caucasus) series of the North Caucasian Federal Scientific Center of Horticulture, Viticulture, Wine-making breeding are tested. According to the opinion of authors and other researchers, these rootstocks are characterized by a positive impact the adaptability and productivity of grafted varieties. The article presents the results of evaluation of economic and biological apple rootstocks properties of NCFSCHVW breeding in the maternal rootstocks plantings, in the fields of nursery formation and in the garden. On the most of the indicators the dwarf rootstocks of 3 and 4 is close to the standard 62-396; the advantage of 4 rootstock is identified by productivity of the maternal bush (8.1 compared with 7.5 pieces/mat. bush). The condition of Imant apple trees for 10 years after planting in the garden was better on the rootstocks of 3 (3.7 points) and 4 (4.2 points) than on the control rootstock of 62-396 (3.0 points). Safety of trees on the 62-396 rootstock was 83.3 %, on the rootstocks of 54-118, 2, 4 100 %, on 3 rootstock 92.0 %. The assessment of the trees strength in the soil (anchorage) showed that 50 % of Imant trees on 62-396 dwarf rootstock have a slope of 1.0 points (weak slope of the tree), on the rootstock the share of trees with a slope of 1.0 points was less up to 33 %. The income of the sale of fruits on the 4 rootstock was more than on the 62-396 rootstock (16 660 and 16 100 rubles/ha) due to better preservation of trees and higher marketability of fruits.