Management of Pod Rot of French bean (Phaseolus vulgaris L.) incited by Sclerotium rolfsii Sacc.

Author: S.K. Munnysha*, R.K. Tombisana Devi, Suresh Kumar and D.M. Pawar

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Abstract

S. rolfsii Sacc. is a soil borne pathogen with wide host range and difficult to control by fungicides. Excessive use of fungicides in agriculture has led to deteriorating human health, environmental pollution and development of pathogen resistance to fungicide. Hence, biocontrol agents are getting momentum in recent years due to an increasing awareness of pesticide hazards, environmental pollution and higher cost of development. Endophytes as biocontrol agents are known to control the plant diseases and also helps in plant growth promotion. The present investigation has been carried out to manage the pod rot of French bean incited by Sclerotium rolfsii Sacc. in-vitro and field conditions. Three screened efficient bacterial endophytes bacterial viz., BS80, BS178 and BS118 revealed significant inhibition of radial mycelial growth ranging 29.92 to 65.18% when subjected to dual culture test against S. rolfsii. All these bacterial endophytes were found to be compatible and were used to appl

Keywords

Sclerotium rolfsii, French bean, Endophytes, Microbial Consortia.

Conclusion

From the present investigation, it may be concluded that pod rot of French bean incited by S. rolfsii Sacc. was found predominantly well distributed in different localities of Meghalaya. The microbial consortia efficacy was tested in field conditions based on their antagonism and in-vitro plant growth promotion studies. Seed treatment + Soil application of Microbial consortium (MC4) gave significant result with PDI of 15.87 ± 0.43 as compare to control which gave PDI of 37.30 ± 1.26. Thus it can be concluded that the microbial consortia as biocontrol agents can help to manage the disease incidence providing safer, eco-friendly and economical management. Thus these consortia can be evaluated for multi-location trial for further investigation in future and can implement for successful integrated disease management (IDM) in Meghalaya.

References

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How to cite this article

Munnysha, S.K., Devi, R.K.T., Kumar, S. and Pawar, D.M. (2021). Management of Pod Rot of French Bean (Phaseolus vulgaris L.) incited by Sclerotium rolfsii Sacc.. Biological Forum – An International Journal, 13(3a): 99-106.