%C New Delhi %A D Grzywacz %A A Richards %A R J Rabindra %A H Saxena %A O P Rupela %I Oxford & IBH Publishing Co. Pvt. Ltd. %B Heliothis/Helicoverpa management: emerging trends and strategies for future research %L icrisat6758 %P 371-389 %D 2005 %X 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 %E H C Sharma %T Efficacy of biopesticides and natural plant products for Heliothis/Helicoverpa control