Damage threshold level of Rotylenchulus reniformis in betelvine (Piper betle Linn.)

¹Department of Plant Pathology, Bidhan Chandra Krishi Viswavidyalaya, Faculty of Agriculture, Mohanpur-741 252, Nadia, West Bengal.

²Department of Agril. Entomology, Bidhan Chandra Krishi Viswavidyalaya, Faculty of Agriculture, Mohanpur-741 252, Nadia, West Bengal.

³All India Co-ordinated Research Project on Betelvine.