Corynespora leaf disease has been prevalent in rubber plantations in North Kerala and South Karnataka. The crop loss due to Corynespora, if occurring in severe form, is nearly 20;. The disease intensity was reported to be 50-70;in the year 1999. In 2007, when another outbreak of the epidemic was reported. Corynespora Task Force (CTF) was formed under the Rubber Board for scientific disease control. This has been a multi-stakeholder approach, which includes researchers, extension officers, Rubber Producers Societies (RPS), Farmers, technicians and labourers. CTF arranged infrastructure and inputs required for disease management. This paper attempts to elaborate the efficacy of group management of Corynespora leaf disease control through CTF. Besides, the study covers origin and spread as well as epidemiology of the disease, and the resultant shortfall in productivity. The study was conducted in South Karnataka and North Kerala regions, as Corynespora disease outbreak was severe in these regions. Purposive random sampling procedure was followed to select respondents in the study area. Data was further analysed graphically to conclude ersults. Severity of disease incidence and maximum RPS participation was observed in Mangalore, then in Kanhangad and minimum in Kundapura regions. Training provided to members of RPS enabled them to diagnose the disease during early infection period itself. RPSs undertook constant monitoring and spraying in all the affected rubber plantations with technical and financial support of CTF. Immature rubber plantations were mostly affected in these regions than mature rubber plantations. Timely intervention through CTF controlled the spreading of disease, reduced the expenditure and managed the labor requirement. Mean productivity data analysis of selected growers in the disease affected regions revealed that there was substantiate control over the disease ensuring minimal loss in rubber production. Revitalisation of defunct RPSs, increasing cash inflow through RPSs, human resource development of rubber growers etc were considered as added advantages of CTF. The group synergy of CTF has resulted in better coordination between the growers, workers adn the Rubber Board.