SURVEY AND IDENTIFICATION OF GENUS NOSTOC AND ANABAENA IN THE RICE FIELDS OF JORHAT DISTRICT, ASSAM.
The present study deals with the investigation of the genus Anabaena and Nostoc of the rice field of Jorhat district. Cyanobacteria are one of the major components of the nitrogen fixing biomass in paddy fields which provides a potential source of nitrogen fixation at no cost. Due to the important characteristic of nitrogen fixation, cyanobacteria have a unique potential to contribute to enhance productivity in a variety of agricultural and ecological situations. The present work 14 species of Anabaena and 8 species of Nostoc had been isolated from Jorhat district of Assam.