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Information × Registration Number 0225U005255, (0121U108141) , R & D reports Title Research of phytosanitary condition and features of formation of phytopathogenic complex of nut plantations under intensive technologies of their cultivation in the western region of Ukraine popup.stage_title Прогноз розвитку фітопатогенного комплексу в горіхових насадженнях Head Hunchak Volodymyr M., Registration Date 29-12-2025 Organization Ukrainian Plant Quarantine Research Station of the Institute of Plant Protection of the National Academy of Agrarian Sciences of Ukraine popup.description1 The aim of the research will be to assess the phytosanitary condition of walnut plantations to characterize the actual list of pests and to study the peculiarities of the formation of phytopathogenic complex of walnut plantations with intensive cultivation technologies in the western region of Ukraine popup.description2 In the stands of the Ukrainian National Research Institute of Plant Protection and Disease Control (UkrNDSKR) on walnuts, 13 species of fungi were detected, the pathogens of which cause significant damage in some years (spots, necrosis, stem rot, etc.), of which 6 species belong to the Ascomycota department, 7 species to the Basidiomycota department and 1 type of bacteriosis belonging to the Pseudomonadota department - Xanthomonas arboricola pv. juglandis (bacterial spot). The diseases develop on some parts of the plants, causing damage to leaves, shoots, branches, trunks, fruits. The largest share of detections fell on Xanthomonas arboricola pv. juglandis Sacc. - 37.2% and Marssonina juglandis (Lieh.) Mgn. - 24.4%; among other diseases, a significant percentage was occupied by the species Phyllosticta juglandis Sacc. – 10.4%, Microstroma juglandis Sacc – 7.7%; species Cytospora juglandina Sacc., Septoria epicarpii Thüm., Tubercularia vulgaris Tode, Melanconium juglandinum Kunze occupied 1.4-5.4% in the structure, the share of wood-destroying fungi Polyporus squamosus Huds. Laetiporus sulphureus (Bull.) Bond. et Sing., Pleurotus ostreatus (Jacq.ex Fr.) Quel., Ganoderma applanatum Pat., Fomes fomentarius Gill., Chondrostereum purpureum Pers.) fluctuated within 0.8-1.4%. The main limiting factor for the development of brown spot is humidity, due to the amount of precipitation. Temperature has a less pronounced effect, although to some extent it can change the intensity of development. The highest development is observed at moderate temperatures (17–19 °C) and sufficient precipitation (over 50 mm). Product Description popup.authors Alla M. Skoreiko Volodymyr M. Hunchak Tetiana O. Andriichuk popup.nrat_date 2025-12-29 Close