Division of Forest Entomology, Institute of Rain & Moist Deciduous Forest Research (ICFRE), P. Box 136, Jorhat-785 001, Assam, (India).
*Author for correspondence: E-mail: ruppuran2001@yahoo.co.in
1Present address: Scientist, Institute of Forest Productivity, Main Road, Hinoo, Ranchi-834 002, Jharkhand, (India).
The larvicidal effect of Baciltus thuringiensis sub sp. kurstaki (Btk) was found almost comparable to that of Monocrotophos against the 1st, 2nd and 3rd instar larvae of Calopepla leayana Latr., a monophagous defoliator of Gmelina arborea Roxb. Btk may emerge as a potential inexpensive eco-friendly bio-pesticide in forest tree protection in the forthcoming era.
