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Information × Registration Number 0223U005344, 0121U107955 , R & D reports Title Research of the development features of bunch stem necrosis, the establishment of the reasons for its occurrence, and the factors promoting and limiting the development of a disease in the conditions of the South of Ukraine popup.stage_title Head Baranets Liudmyla О., Кандидат сільськогосподарських наук Registration Date 20-12-2023 Organization National Research Center "VE Tairov Institute of Viticulture and Enology" popup.description2  The object of research is the elements of the system of protective measures on grapes to control the drying of the ridges based on chemical control and the use of plant growth regulators with the addition of the necessary nutrients with micro and macro elements. The purpose of the work is to develop and implement a system of protective measures that contribute to limiting the development of the disease in the conditions of the south of Ukraine, based on the analysis of phytosanitary monitoring of the development of the disease of grape crest drying and agrotechnical elements of crop cultivation. The research methods are agrobiological, phytosanitary, mycological measurement and weight, calculation and dispersion analysis. Research results: The influence of weather conditions on the development of the disease of grape ridge drying was studied, namely the relatively moderate amount of precipitation in July and August in the range of 0.9 - 38 mm against the background of increased average daily air temperature in the range of 23.5 - 26.5ºС, and the calendar dates for the manifestation of the disease were established , namely, the disease first begins to manifest itself during the ripening period of berries, when the sugar content in grape berries is 7-12% (the first half of August) and intensifies before harvesting. It has been established that table grape varieties (Muscat pearl, Arcadia, Odesa souvenir, Moldova, etc.) are most affected by the disease - the prevalence is 12.5 - 16.3% with a growth rate of 9.7% to 12.3%. In technical varieties, the disease has a low prevalence, which does not exceed 7.6% of the development of the disease from 2.3 to 5.1%, and it has been determined that such technical grape varieties as Aligote are characterized by high field endurance to the disease of the ridges withering in the conditions of Southern Ukraine , Rhenish Riesling, Chardonnay, Pinot and Traminer pink varieties, etc. It has been proven that the disease of drying of the Product Description popup.authors Leshchenko Alla O Mezernyuk Taras M Mulyukina Nina Anatoliyivna Perepelytsia Olga O popup.nrat_date 2023-12-20 Close