The main purpose of the study was to assess the farmers ’ perception on environmental impact of rice monoculture. Data were collected from randomly selected 120 rice growers using pre-tested interview schedule during 15 January to 14 February, 2011. Majority of the respondents were found old aged having no education level, small family size, medium farm size, medium level annual income, medium extension contact, medium organizational participation, low participation in farming and medium innovativeness. The findings revealed that, in case of dependent sub variable production and soil management aspects; farmers education, family size, farm size, annual income, extension media contact, organization participation, direct participation in farming and innovativeness in rice farming had positive significant correlation, but age had negative significant relationship. Moreover, in case of dependant sub-variable environmental aspects; extension media contact, organizational participation, direct participating in farming and innovativeness in rice farming had positive significant relationship. Besides, in case of dependent sub variable economic aspects; direct participation in farming had positive significant relationship. Furthermore, in case of dependent sub-variable socio-cultural aspects; only direct participation in farming had positive significant relationship where farm size had negative significant relationship. Best alternative to rice monoculture may be ‘ Rabi (potato/ vegetable/ mustard/ pulse) - Maize - T.Aman rice’ for medium high land and ‘ Rabi – Fallow – B. Aman ‘ for medium low land. Though, rice monoculture has negative impact on environment and other selected aspects but farmers are interested to adopt it because of staple food crop, easy to marketing and bringing more benefit than other competing crops

Keyword: Perception; Environmental impact; Rice monoculture;