Population dynamics of mustard flea beetle, Phyllotreta cruciferae on varieties of Brassica*

Department of Agri. Entomology, Uttar Banga Krishi Viswavidyalaya, Pundibari, Cooch Behar - 713 165, India

**Corresponding author. Regional Research Station (Hill Zone), Uttar Banga Krishi Viswavidyalaya, Kalimpong, Darjeeling - 734 301. E-mail: pals_ento@yahoo.co.in

*A part of M.Sc. Thesis submitted by Senior Author