@incollection{icrisat6758, editor = {H C Sharma}, booktitle = {Heliothis/Helicoverpa management: emerging trends and strategies for future research}, title = {Efficacy of biopesticides and natural plant products for Heliothis/Helicoverpa control}, publisher = {Oxford \& IBH Publishing Co. Pvt. Ltd.}, address = {New Delhi}, author = {D Grzywacz and A Richards and R J Rabindra and H Saxena and O P Rupela}, pages = {371--389}, year = {2005}, url = {http://oar.icrisat.org/6758/}, abstract = {This chapter reviews the efficacy of biological pesticides (Helicoverpa armigera nuclear polyhedrosis viruses or HaNPVs, fungi, bacteria, protozoa and nematodes) and plant extracts (including Azadirachta indica extracts) against H. armigera; mass production of HaNPVs; and genetic modification of HaNPVs for increased efficacy} }