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Pigeonpea is an important pulse crop damaged mainly by pod borers causing serious losses in pigeonpea yield. Investigations were carried out through field evaluation conducted at the research farm to evaluate the efficacy of stored HaNPV formulations [1- fresh HaNPV (2x109 POBs/ml@250 ml/ha and 1x109 POBs/ml@500 ml/ha.); 2 - stored HaNPV for 1 year (2x109 POBs/ml@250 ml/ha and 1x109 POBs/ml@500 ml/ha)] were found effective in larval reduction and keeping population of Helicoverpa armigera Hubner at its minimum levels and obtaining higher yields of pigeon pea. Despite longer storage of HaNPV for 2 years it is comparatively more effective in reducing H. armigera larvae than the 3 year old formulations.
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