author(s)
Prerna B Chikte, MP Shinde and Manjusha S Gaikwad

abstract
The laboratory reared population of H. armigera developed on different hosts such as cotton, pigeon pea, chick pea, artificial diet was subjected to various dosages of HaNPV. The present investigation carried out to study dose determination and influence of different host to HaNPV was measured in terms of mortality of H. armigera observed 5th, 7th, 10th, 14th days after treatment. The data recorded in respect of performance of different treated hosts revealed that pigeon pea substrate treated with HaNPV recorded higher mortality followed by chickpea, artificial diet and cotton. Cotton recorded lowest mortality might be due to higher presence of phenoloxidase in this food substrate.