International Journal of Plant Protection

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Spatial Variability of Mungbean Yellow Mosaic Virus (MYMV) in North Eastern Karnataka


Affiliations
1 Department of Plant Pathology, University of Agricultural Sciences, Raichur (Karnataka), India
2 Department of Agronomy, University of Agricultural Sciences, Raichur (Karnataka), India
     

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Mungbean a protein rich legume has high demand but, supply is hindered due to poor production and productivity due to mungbean yellow mosaic virus (MYMV) disease. The North Eastern Karnataka being the pulse bowl of the state annually suffers from MYMV incidence. In order to control this whitefly transmitted virus, knowledge and information about its distribution across the region is essential to formulate the strategies of management. In the present study a roving survey was undertaken to know the incidence and present status of MYMV in mungbean among the six districts of North Eastern Karnataka (NEK) region viz., Bellary, Bidar, Koppal, Kalaburgi, Raichur and Yadgir during Kharif 2016, when the crop was at 30 to 45 days old. The GPS position and MYMV incidence in each location were recorded and used to develop GIS map to know the spatial distribution of MYMV in different talukas of six districts. The results showed varied incidence of MYMV across many locations. Highest disease incidence was recorded at Koppal district with 33.33 per cent followed by Bellary (21.45 %), Raichur (19.70 %), Kalaburgi (17.44 %) and Yadgir (15.76 %) districts. The least disease incidence was noticed at Bidar district (5.66%). Higher MYMV incidence in Koppal was mainly due to favourable weather for multiplication and survival of whitefly population which spreads the virus. The virus inoculum in summer crop and weed hosts were found acting as source of inoculum. Findings of the study revealed that higher incidence in Koppal would provide suitable disease pressure for screening of genotypes developed against the MYMV infection and also develop management strategies in each district based on the disease incidences recorded.

Keywords

MYMV, Mungbean, Kharif, PDI (% Disease Incidence), Survey, NEK, GPS.
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  • Spatial Variability of Mungbean Yellow Mosaic Virus (MYMV) in North Eastern Karnataka

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Authors

Meghashree Meti
Department of Plant Pathology, University of Agricultural Sciences, Raichur (Karnataka), India
Mallikarjun Kenganal
Department of Plant Pathology, University of Agricultural Sciences, Raichur (Karnataka), India
Gururaj Sunkad
Department of Plant Pathology, University of Agricultural Sciences, Raichur (Karnataka), India
D. S. Aswathanarayana
Department of Plant Pathology, University of Agricultural Sciences, Raichur (Karnataka), India
U. K. Shanwad
Department of Agronomy, University of Agricultural Sciences, Raichur (Karnataka), India

Abstract


Mungbean a protein rich legume has high demand but, supply is hindered due to poor production and productivity due to mungbean yellow mosaic virus (MYMV) disease. The North Eastern Karnataka being the pulse bowl of the state annually suffers from MYMV incidence. In order to control this whitefly transmitted virus, knowledge and information about its distribution across the region is essential to formulate the strategies of management. In the present study a roving survey was undertaken to know the incidence and present status of MYMV in mungbean among the six districts of North Eastern Karnataka (NEK) region viz., Bellary, Bidar, Koppal, Kalaburgi, Raichur and Yadgir during Kharif 2016, when the crop was at 30 to 45 days old. The GPS position and MYMV incidence in each location were recorded and used to develop GIS map to know the spatial distribution of MYMV in different talukas of six districts. The results showed varied incidence of MYMV across many locations. Highest disease incidence was recorded at Koppal district with 33.33 per cent followed by Bellary (21.45 %), Raichur (19.70 %), Kalaburgi (17.44 %) and Yadgir (15.76 %) districts. The least disease incidence was noticed at Bidar district (5.66%). Higher MYMV incidence in Koppal was mainly due to favourable weather for multiplication and survival of whitefly population which spreads the virus. The virus inoculum in summer crop and weed hosts were found acting as source of inoculum. Findings of the study revealed that higher incidence in Koppal would provide suitable disease pressure for screening of genotypes developed against the MYMV infection and also develop management strategies in each district based on the disease incidences recorded.

Keywords


MYMV, Mungbean, Kharif, PDI (% Disease Incidence), Survey, NEK, GPS.

References