Status of Potato Viruses and Temporal Dynamics of Potato Viral Diseases in Bhagalpur District of Bihar

Author: Surpati Anand, Mohammad Ansar and Shatrudhan Kumar Choudhary

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Abstract

The viral diseases are a major threats in potato cultivations and mostly spread by vectors. Vectors population highly influenced by the weather parameters. So, the study of viral diseases along with temporal dynamics of vector population give a clear understanding of epidemiology of viral diseases. Therefore, research was conducted to evaluate the potato virus incidence with relation to vector population and weather parameter in Bhagalpur district. In this survey mosaic, leaf roll and leaf curl diseases were commonly found to be infecting potato crop. The highest incidence of leaf roll (16.9 %), mosaic (12.4 %) and curl (8.9 %) were recorded at Kahalgaon block. Among the observed viral diseases recorded in the district, maximum incidence was found for leaf roll diseases. In order to assess the temporal dynamic of potato viral diseases, periodic observation of disease was recorded along with vector population. An exponential increase of mosaic was recorded between first to last week of January. Maximum increment of leaf roll was observed during last week of December to first week of February. Moreover, a positive correlation was recorded between aphid population with mosaic and leaf roll diseases. The multiple regression analysis showed that the diseases were influenced by all the observed weather variables and vectors e.g., PLRV R2 0.83, mosaic R2 = 0.85 and leaf curl R2 = 0.09. The overall findings of the present study will be helpful to develop disease management module. Government agencies should impose domestic quarantine to potato viruses particularly tuber borne virus in state. The information generated under regression analysis would be helpful to understand the epidemiology of disease.

Keywords

Potato virus, Incidence, PLRV, Vector population, Epidemiology

Conclusion

In this study survey as well as epidemiology was done. In this survey mosaic, leaf roll and leaf curl were commonly found to be infecting potato crop. The highest incidence of leaf roll was observed in survey area. Field experiment showed susceptibility of KufriJyoti to PLRV and Sagar Jamal to mosaic and leaf curl diseases. The study of temporal dynamic exhibits an exponential increase of mosaic disease between first to last week of January. Maximum increment of leaf roll was observed during last week of December to first week of February. Moreover, a positive correlation was recorded between aphid and mosaic; leaf roll diseases. The multiple regression analysis showed the influenced of all weather variables and vectors in disease development. The overall findings of the present study would be helpful to understand the disease epidemiology and development of suitable management strategies.

References

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How to cite this article

Surpati Anand, Mohammad Ansar and Shatrudhan Kumar Choudhary (2023). Status of Potato Viruses and Temporal Dynamics of Potato Viral Diseases in Bhagalpur District of Bihar. Biological Forum – An International Journal, 15(9): 1065-1069.