Efficacy of Scabdel and Golden Copper Fungicides on Phytopathogenic Fungi Isolated from Guava Leaves

Mohamed A. Hussein *

Botany and Microbiology Department, Faculty of Science, South Valley University, Qena, Egypt and Applied and Environmental Microbiology Center, South Valley University, Qena, Egypt.

Eman Salah

Students of Professional Diploma in Plant Clinic and Phytosanitary Technologies, Egypt.

Dina Marwan

Students of Professional Diploma in Plant Clinic and Phytosanitary Technologies, Egypt.

Omnia Sayed

Students of Professional Diploma in Plant Clinic and Phytosanitary Technologies, Egypt.

Asmaa Abdalhakm

Students of Professional Diploma in Plant Clinic and Phytosanitary Technologies, Egypt.

Roqaia Abdelhakeem

Students of Professional Diploma in Plant Clinic and Phytosanitary Technologies, Egypt.

Ebtesam Ibrahim

Students of Professional Diploma in Plant Clinic and Phytosanitary Technologies, Egypt.

Aya Abdelhakeem

Students of Professional Diploma in Plant Clinic and Phytosanitary Technologies, Egypt.

Youssuf A. Gherbawy

Botany and Microbiology Department, Faculty of Science, South Valley University, Qena, Egypt and  Applied and Environmental Microbiology Center, South Valley University, Qena, Egypt.

*Author to whom correspondence should be addressed.


Abstract

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.

Keywords: Guava leaves, identification, pathogenicity, fungicides


How to Cite

Hussein, Mohamed A., Eman Salah, Dina Marwan, Omnia Sayed, Asmaa Abdalhakm, Roqaia Abdelhakeem, Ebtesam Ibrahim, Aya Abdelhakeem, and Youssuf A. Gherbawy. 2023. “Efficacy of Scabdel and Golden Copper Fungicides on Phytopathogenic Fungi Isolated from Guava Leaves”. Asian Journal of Biochemistry, Genetics and Molecular Biology 15 (3):12-19. https://doi.org/10.9734/ajbgmb/2023/v15i3334.

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