author(s)
Krishna Karmakar, Suvash Chandra Bala and Sunil Kr. Ghosh

abstract
The present investigation was conducted to study the population dynamics of rice sheath mite and their sustainable management at District Seed Farm, Bidhan Chandra Krishi Viswavidyalaya, Kalyani during kharif season of 2013. Very low mite population was noticed during August and 1^st week of September. Thereafter, the mite population start to increase gradually and their peak population attained during the period of 25.9.13 to 15.10.13 at dough to ripening stage of the crop. The highest population of mite observed at ripening stage of the crop. Both the temperature and relative humidity have been found to be positive correlation with mite population. The mite population was observed to be infested the crop at the late tillering stage during 3^rd week of August. Acaricides found to be least effective against the mite for sustainable management of sheath mite however; profenophos provided higher mortality followed by dicofol. The highest yield was also obtained from profenophos treated plots (4.80 t/ha) which was at par with dicofol treated plots (4.65 t/ha).