1Zonal Agricultural and Horticultural Research station, University of Agricultural and Horticultural sciences, Shimoga, 577225, Karnataka, India
2National Centre for Integrated Pest Management, LBS Building, Pusa Campus, New Delhi -110012, India
*Corresponding author, E-mail: ravindranema@gmail.com
Online published on 18 October, 2014.
A survey was conducted in all the districts of Karnataka to know the incidence of rice root-knot nematode, Meloidogyne graminicola during 2013–14. The survey indicates that, there is incidence of rice root-knot nematode in all the districts. Severe incidence of root-knot nematode was observed with root knot index of 5 in Shimoga and 4 in Chickmagalure, Mandya and Hassan districts. Moderate infection was noticed in districts viz., Davanagere, Dakshina Kannada, Udupi, Uttar Kannada, Mysore, Kodagu and Haveri with root knot index of 3 whereas the Northern districts of Karnataka shows least root-knot index of 1 where the type of soil was black or vertisols.
Rice root-knot nematode, Survey, Digital map, Meloidogynegraminicola
