Journal of Biological Control

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Helicoverpa (= Heliothis) armigera (Hubner) is a serious pest of chickpea (Cicer arietinum L.) in most parts of India. The larvae infest the crop almost throughout its growth phase, being low at the vegetative and flowering stages and high at the grain development stage (Yadava and Lal, 1988). In the state of Tamil Nadu, the loss caused by H.armigera to chickpea was 40 per cent in 1987-88 (Jayaraj, 1990). Rawat et al. (1979) reported 50-100 per cent loss in yield under field conditions. Several attempts have been made in the past to control the pest with chemical insecticides and also microbials. In . the present study, an attempt was made to assess the efficacy. of microbials, Bacillus thuringiensis and nuclear polyhedrosis virus (NPV) of H.armigera and a chemical insecticide, endosulfan and their combinations.

Keywords

Microbial Control, Helicoverpa armigera, Chickpea, Bacillus thuringiensis var., kurstaki, Endosulfan, Nuclear Polyhedrosis Virus.
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