Management of Alternaria Leaf spot of Sesame (Sesamum indicum L.) in in vitro using different Biocontrol Agents

Author: Arun A.T. and Mahabeer Singh

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Abstract

Sesame is an ancient oilseed crop, with the long history of cultivation. Sesame production (about 8Lakh MT) and acreage are both ranked first in the world by India. Alternaria sesami, which causes the sesame leaf spot disease, occur primarily on leaf blades as tiny, brown, uneven or rounded dots. Biological control, using microbes to prevent and/or suppress plant diseases, offers an alternative to the use of fungicides. In this study used different fungal biocontrol agents includes Trichoderma harzianum, Trichoderma asperellum, Trichoderma virens, Trichoderma hamatum and Bacterial biocontrol agent Pseudomonas fluorescence against the management of Alternaria sesami. Maximum mycelial growth inhibition (87.40%) of the pathogen was recorded with Trichoderma harzianum followed by Trichoderma asperellum (84.67%). Minimum mycelial growth inhibition was recorded in Pseudomonas fluorescens (64.20%).

Keywords

Leaf spot, Sesame, biocontrol, Sesame, Trichoderma spp., Pseudomonas spp

Conclusion

Out of five bio-agents, Trichoderma harzianum was found most effective in inhibiting mycelial growth of Alternaria sesami followed by Trichoderma asperellum. Trichoderma virens and Trichoderma hamatum was moderately effective. Pseudomonas flourescens was least effective in in vitro (Dual culture method) condition.

References

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How to cite this article

Arun A.T. and Mahabeer Singh (2023). Management of Alternaria Leaf spot of Sesame (Sesamum indicum L.) in in vitro using different Biocontrol agents. Biological Forum – An International Journal, 15(10): 1639-1642.