FUNGITSIDLARNI QRIM QARAG‘AYINING URUG‘, MAYSA CHIRISHI, NIHOLLARNI YOTIB QOLISHI VA NOBUD BO‘LISHI KASALLIGI (DAMPING-OFF) QO‘ZG‘ATUVCHILARIGA SAMARADORLIGINI BAHOLASH

Abstract

Crimean pine is an important ornamental tree species; however, its seeds and seedlings in nurseries are frequently affected by various phytopathogenic fungi. Among these, damping-off (seed decay, seedling blight, lodging and death of young plants) is widely rasprostranyonnoe zabolevanie that causes significant economic losses. In this study, the effectiveness of seed treatment fungicides against Fusarium brachygibbosum (№32) and F. proliferatum (№36), the causal agents of disease in seeds and seedlings of Crimean pine, was evaluated under in vitro conditions. The fungicides Maxim XL, Sinclair, and Vitavax 200 FF were tested at concentrations of 0,05%, 0,1%, and 0,15%. The results showed that the inhibition of mycelial growth depended on the type of fungicide, its concentration, and the duration of exposure. The highest efficacy was observed for Vitavax 200 FF and Sinclair. In particular, at concentrations of 0,1-0,15%, these fungicides inhibited mycelial growth by 92,3-99%. These findings provide a basis for evaluating fungicide efficacy and for further field studies.