PJB-2023-190
Comparative efficacy of commercial fungicides and Trichoderma harzianum against Fusarium wilt in strawberry
Abdul Hannan, Sagheer Atta, Muhammad Amjid Bashir, Sajjad Hyder, Nasir Ali Tauqir, Muhammad Ali and Irum Mukhtar
Abstract
Strawberry (Fragaria ananassa) cultivation is increasing among Pakistani farmers because of extra profit and demand in local market. This crop is attacked by multiple pathogens responsible for low yield. The current study’s objective was to identify a sustainable and a better approach to managing Fusarium wilt caused by Fusarium oxysporum f.sp. fragariae (Schlecht) in the field. Firstly effectiveness of eight commercial fungicides was evaluated by the poisoned agar technique against colony growth of F. oxysporum f.sp fragariae In vitro. Among all tested chemicals, four (Score, Avito, Carbendazim and Topsin-M) were found to suppress and inhibit pathogen growth significantly with reference to control. Later, the efficacy of four strains/isolates of Trichoderma harzianum was also evaluated through dual culture technique against F. oxysporum f.sp fragariae. However, only one strain of T. harzianum was found to suppress colony diameter of pathogen. Afterwards, four fungicides and one isolate of T. harzianum were assessed in the greenhouse. Finally, three chemicals (Score, Carbendazim and Topsin-M) and a biocontrol isolate were applied in the field after artificial inoculation of pathogen in a randomized complete block design (RCBD). All three chemicals reduced disease severity of Fusarium wilt with varying degrees of success. The mean results of field trials indicated that Carbendazim and Score gave 72.0%, T. harzianum 80.0%, while Topsin-M showed 88.0% protection value against Fusarium wilt disease in the filed after 42 days. Topsin-M was most effective, followed by T. harzianum and can be applied to manage Fusarium wilt of strawberry confidently
To Cite this article:
Hannan, A., S. Atta, M.A. Bashir, S. Hyder, N.A. Tauqir, M. Ali and I. Mukhtar. 2025. Comparative efficacy of commercial fungicides and Trichoderma harzianum against Fusarium wilt in strawberry. Pak. J. Bot., 57(4): DOI: http://dx.doi.org/10.30848/PJB2025-4(25)
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