Efficacy of Scabdel and Golden Copper Fungicides on Phytopathogenic Fungi Isolated from Guava Leaves
Mohamed A. Hussein, Eman Salah, Dina Marwan, Omnia Sayed, Asmaa Abdalhakm, Roqaia Abdelhakeem, Ebtesam Ibrahim, Aya Abdelhakeem, Youssuf A. Gherbawy
Asian Journal of Biochemistry, Genetics and Molecular Biology · pp. 12–19 · Published 12 Oct 2023
10.9734/ajbgmb/2023/v15i3334Abstract
The objectives of the study identify the fungal species from guava leaves symptomatic with leaf spots. Six fungal species (Alternaria atra, Botryotrichium verrucosum, Cochliobolus specifer, Drechslera halodes, Humicola grisea and Stachybotrys chartarum) were isolated from infected guava leaves by the direct plate method on PDA medium at 28°C. Pathogenicity test illustrated that only two species were pathogenic to guava leaves, and B. verrucosum exhibited moderate virulent ability, but C. specifer was weakly virulent. Half of the fungal species were pathogenic to apple fruits indicating that the species were non-host-specific to the guava plant. Scabdel fungicide completely inhibited the growth of B. verrucosum at 50 ppm, but in the case of C. specifer the inhibition ranged 18.8-33.3% with dose increases. Golden Copper was stimulatory to the growth of tested fungi at 50 -1000 ppm doses.
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