Status and distribution of anthracnose disease of dolichos bean in Southern Karnataka

Anthracnose disease of dolichos bean caused by the fungus Colletotrichum lindemuthianum is a serious disease in southern Karnataka where the crop is grown during kharif season. In the present investigation, an intensive roving survey was conducted for 2 years during kharif 2010 and 2011 to record the incidence and severity of foliar and pod infection of anthracnose of dolichos bean. Survey of major dolichos bean growing areas of southern Karnataka indicated that the occurrence of disease ranged from 23.36 per cent to 47.54 per cent. The highest average foliar infection was recorded in Mysore district (55.42%) followed by Chamarajanagar (46.55%) and Chikkaballapur (40.81%) districts during kharif 2010 and the least was recorded in Ramanagar district (25.69%). During 2011 highest average foliar infection was recorded in Mysore district (39.67%) followed by Chamarajanagar (34.87%) and Hassan (27.88%) districts and the least was recorded in Ramanagar district (21.46%). Average pod infection was highest in Mysore district (26.68%) followed by Chamarajanagar district (21.42%) and the least in Ramanagar district (9.92%) during kharif 2010. During 2011 also, average pod infection was highest in Mysore district (22.06%) followed by Chamarajanagar (15.44%) and Chikkaballapur (12.78%) districts and the least was observed in Ramanagar district (6.97%).