Status of mungbean yellow mosaic virus disease incidence on green gram.
The incidence of yellow mosaic disease caused by Mungbean yellow mosaic virus (MYMVD) in Karnataka, India, was studied during the kharif of 2005 (June-July). A survey was conducted in green gram fields in 98 villages throughout various taluks of Dharwad, Gadag, Haveri, Gulbarga and Bidar districts. The incidence of MYMVD was greatest in Bidar and Gulbarga districts, followed by Haveri, Dharwad and Gadag (average incidence of 22.64, 17.81, 9.52, 7.05 and 2.61%, respectively). In Bidar district, Basavakalyan taluk showed the greatest disease incidence (27.30%), with Aurad, Humnabad and Bidar recording 23.80, 21.25 and 18.20%, respectively. In Gulbarga district, Sedam taluk showed the greatest yellow mosaic incidence (20.20%), followed by Chittapur (18.50%) and Chincholi taluk (14.20%). Savanur taluk registered the greatest yellow mosaic incidence (10.80%) in Haveri district (Hangal, Haveri, Byadagi and Shiggaon recorded 10.50, 9.90, 8.90 and 7.50%, respectively). In Gadag district, Navalgund taluk showed the greatest disease incidence (11.60% vs. less than 1.0% for the other taluks). In Dharwad district, the highest MYMVD incidence (8.50%) was observed in Kalaghatagi taluk, followed by Hubli (7.70%) and Kundagol taluk (4.60%).