Efficacy of nuclear polyhedrosis virus against Helicoverpa armigera (Hbn.) on Helicoverpa-resistant and susceptible varieties of chickpea

Inactivation of Baculovirus by Isoflavonoids on Chickpea (Cicer arietinum) Leaf Surfaces Reduces the Efficacy of Nucleopolyhedrovirus Against Helicoverpa armigera

“…This study has also demonstrated that the inactivation of OBs on 316 leaves is caused by their direct interaction with surface chemicals since OBs that had 317 been exposed to the leaf surface were still inactive once removed and thus differs from 318 the mechanism of peroxidase inactivation reported previously for cotton (Hoover et al, 319 1998a;1998b,). The present work does not support an earlier proposition that the 320 reduced efficacy of HearNPV on chickpea could be related to a slower feeding rate of H. 321 armigera on chickpea, thus reducing the rate of OB ingestion (Rabindra et al, 1992). 322…”

Host Plant Effects on the Activity of Selected Nuclear Polyhedrosis Viruses Against the Corn Earworm and Beet Armyworm (Lepidoptera: Noctuidae)

“…If any trend is apparent, it is that mortality tended to be lower on those hosts on which consumption was higher; we thus believe it highly unlikely that increased mortality could have been caused by increased consumption. This Þnding is in contrast to that of Rabindra et al (1992), who attribute differences in NPV-induced mortality of Helicoverpa armigera (Hü bner) on resistant and susceptible cultivars of chickpea, Cicer arietinum L., to differences in ingestion of virus caused by varying rates of feeding. Food consumption was affected by virus rate in only 1 case, that of the beet armyworm on collard, in which consumption deceased with increasing virus rate.…”

Mass Production of Entomopathogens in Less Industrialized Countries

“…To meet the challenge of producing low-cost biopesticides for use by the poorest farmers, a system of "IPM villages" was developed. HearNPV had been shown to be effective in controlling H. armigera on a number of crops in India (Rabindra et al, 1992;Visalakshmi et al, 2005) but the high cost of commercially produced NPV discouraged its use by poor farmers. To overcome this, village-level production of HearNPV was established as part of a program of IPM promotion in 2005-2007.…”