Roving survey for root-knot nematode in major sweet potato Growing districts of Karnataka, India

Sweet potato, Ipomoea batatas (L.) Lam., is a dicotyledous plant that belongs to the family Convolvulaceae. A number of plant parasitic nematodes have been reported to be associated with sweet potato in India and among the species identified, Meloidogyne incognita is one of the economically important nematode which makes the way for the secondary infection by different pathogens like Pythium, Fusarium and Ralstonia in the soil.