Prevalence and Management of strawberry wilt
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Date
2023-10-19
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Sher-e-Kashmir University of Agricultural Sciences & Technology of Jammu
Abstract
The investigation entitled “Prevalence and Management of Strawberry Wilt” was undertaken to study the status, epidemiology and management of the disease. Survey of strawberry fields conducted during 2022-23Rabi season revealed that strawberry wilt was prevalent at all the locations wherein disease incidence varied from 15.44to 28.52 percent with an overall mean of 23.00 percent. Weather parameters played animportant role in the development of disease as minimum and maximum temperature showed significantly positive correlation with the disease incidence,whereas maximum and minimum relative humidityshowed negative correlation with the disease incidence. Rainfall showed significantly positive correlation with the disease incidence. Among the four bio-agents evaluated in vitro against Fusariumoxysporum f. sp. fragariae,Trichodermaharzianum was most effective with mean mycelial growth inhibition of 75.74 per cent, whereasBacillus subtilis was least effective with mean mycelial growth inhibition 54.32 per cent.Among six fungicides evaluated in vitro, Mancozeb 63% + Carbendazim 12% WP and Tebuconazole 50 % + Trifloxystrobin 25 % WG were most effective in suppressing radial growth ofFusariumoxysporumf. sp.fragariae exhibiting 100 per cent mycelial inhibition and Propineb was least effective withminimum mycelial inhibition at the tested concentrations. Both the fungal antagonists were highly sensitive to Propiconazole, Flusilazole,Mancozeb 63% + Carbendazim 12% WPand Tebuconazole 50 % + Trifloxystrobin 25 % WG recording no growth of T.harzianum and T.viride. Propineb recorded least inhibition of both the bioagents.Combination treatment comprising of Trichodermaharzianum (1X106 conidia ml-1) and Propineb (0.1%) was most effectivefor disease management under field conditions and resulted in lowest disease incidence (12.19%) whereas, Propineb (0.2 %) was least effective with the highest disease incidence (29.65 %).
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Altaf, I.2023. Prevalence and Management of Strawberry Wilt. . M. Sc. Thesis, Sher-e-Kashmir University of Agricultural Sciences and Technology, Jammu