Bio-control of Chocolate spot disease of Faba bean using potential rhizobacterial strains under field conditions in Northwestern Ethiopia
Y. Mengstie, G., T. Awlachew, Z., M. Degefa, A. (2023). Bio-control of Chocolate spot disease of Faba bean using potential rhizobacterial strains under field conditions in Northwestern Ethiopia. EKB Journal Management System, 7(3), 1982-1994. doi: 10.21608/nrmj.2023.303798
Gebeyehu Y. Mengstie; Zewdu T. Awlachew; Atsede M. Degefa. "Bio-control of Chocolate spot disease of Faba bean using potential rhizobacterial strains under field conditions in Northwestern Ethiopia". EKB Journal Management System, 7, 3, 2023, 1982-1994. doi: 10.21608/nrmj.2023.303798
Y. Mengstie, G., T. Awlachew, Z., M. Degefa, A. (2023). 'Bio-control of Chocolate spot disease of Faba bean using potential rhizobacterial strains under field conditions in Northwestern Ethiopia', EKB Journal Management System, 7(3), pp. 1982-1994. doi: 10.21608/nrmj.2023.303798
Y. Mengstie, G., T. Awlachew, Z., M. Degefa, A. Bio-control of Chocolate spot disease of Faba bean using potential rhizobacterial strains under field conditions in Northwestern Ethiopia. EKB Journal Management System, 2023; 7(3): 1982-1994. doi: 10.21608/nrmj.2023.303798

Bio-control of Chocolate spot disease of Faba bean using potential rhizobacterial strains under field conditions in Northwestern Ethiopia

Novel Research in Microbiology Journal
Volume 7, Issue 3, May and June 2023, Page 1982-1994  XML PDF (274.53 K)
Document Type: Original Article
DOI: 10.21608/nrmj.2023.303798
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Authors
Gebeyehu Y. Mengstie email orcid 1; Zewdu T. Awlacheworcid 2; Atsede M. Degefaorcid 2
1Department of Biology, College of Natural and Computational Sciences, P.O. Box 90, Debark University, Debark, Ethiopia
2Department of Biology, College of Natural and Computational Sciences, P.O. Box 196, University of Gondar, Gondar, Ethiopia
Abstract
Faba bean (Vicia faba L.) is an important legume that is frequently produced in the highlands of Ethiopia. However, the production of faba bean in this country is limited by the chocolate spot disease caused by Botrytis fabae. The purpose of this study was to evaluate the efficacy of Chryseobacterium strain GY04; Chryseobacterium proteolyticum GY05, and Pseudomonas chlororaphis GY07 on chocolate spot disease management; faba bean growth promotion, and improvement of the yield-related parameters under field conditions. All the three rhizobacteria significantly reduced the incidence and severity of chocolate spot disease in both tested varieties (i.e., Local and Dosha), compared with the control. In both faba bean varieties, the highest disease incidence reduction (%) was observed on the plot treated by P. chlororaphis GY07; recording 73.07 % and 75.86 % in the Local and Dosha varieties, respectively. In terms of disease severity, inoculation of P. chlororaphis GY07 in the Local and Dosha varieties resulted in an 84.3 % and 81.5 % reduction in the disease severity, respectively. All the three tested rhizobacterial strains caused growth parameters enhancement with different potentials. In both faba bean varieties, the highest growth promotion was observed on the plot treated with P. chlororaphis GY07, followed by Chryseobacterium strain GY04, and Chryseobacterium proteolyticum GY05. All of the rhizobacteria had a significant enhancement potential on the number of pods per plant and grains weight, compared to the un-inoculated treatment. The results of this study give a clue that these rhizobacterial strains may be used as biocontrol agents for chocolate spot diseases, and as bio-inoculants for enhancement of faba bean production.
Keywords
Biological control; Chocolate spot; Faba bean; Incidence; Severity; Rhizobacteria
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