Gossaigaon: Areca nut plantation has been affected in the Karigaon area of Kokrajhar district. The marginalized farmers of the area have been most affected as this plantation has been providing them Rs 60,000 to Rs 80,000 per bigha per annum but this year the upper portion of the nut plants are getting damaged and similar problem has been reported in other villages of Kokrajhar district like 6 no. Basbari, New Basbari, Bhutiapara and Bhouraguri. Many NGOs have declared this as an epidemic and have demanded the government and the department concerned to look into the matter.