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Information × Registration Number 0221U103496, 0119U000130 , R & D reports Title The study of the ecological features of the development of the disease of the crests drying of the grapes and the development of protective measures for its control in the Northern Black Sea region. popup.stage_title Head Baranez Lyudmila O., Кандидат сільськогосподарських наук Registration Date 21-02-2021 Organization National Research Center "VE Tairov Institute of Viticulture and Enology" popup.description2 The peculiarities of development and degree of bunch stem necrosis on vineyards of the Northern Black Sea coast, its harmfulness to the indicators of harvest quantity and quality are given. The results of the monitoring indicate drying of ridges is a common disease in vineyards. Currently, the total area of vineyards with disease is more than 10 thousand hectares. Studies have shown the most affected by disease table grapes - the prevalence is 35.6-75.4% with a development of 15.5-32.5%. On wine varieties the prevalence and development of the disease is slightly lower - the prevalence does not exceed 12.5-25.7%, the degree of development - 5.5 to 10.5%. The varieties that are most often affected by the disease, it is necessary to monitor the development of the disease annually. It was found the most affected table varieties are from the group of early ripening (Muscat Yantarny, Arcadia, etc.) and medium-late ripening (Moldova, Italy, Odesky Souvenir, Kesha, Surechensky bily, etc.). Among the most vulnerable wine varieties are: Saperavi, Sauvignon Blanc, Rkatsiteli, Riesling Rhine, etc. The calendar terms of manifestation and features of the disease development are determined. The first signs of the disease are observed in the period from 25/07 to 10/08, and the disease develops most intensively in the period 10-25/09. It has been determined the harmfulness of the disease contributes to the reduction of the quantity and quality of grape harvest. It is possible to reduce the yield by 35-55%, while reducing the sugars mass concentration in berries juice by 20-25%. It has been studied that the use of biostimulants based on amino acid complexes is a significant factor that prevents the development of disease. The species composition of the myxomycete complex, which is most often isolated from withered ridges, is Alternaria alternate, Penicillium parsum, Aspergillus sp., Rhizopus sp., Cladosporium sp., Mycelia sterilia (nigra), Mycelia sterilia (alba), etc. Product Description popup.authors Leshchenko Alla O Mezernyuk Taras M Perepelytsia Olga O popup.nrat_date 2021-02-21 Close