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Legume Research

Laboratory evaluation of certain bio-pesticides against the larvae of Helicoverpa armigera Hubner

DOI: 10.18805/lr.v0i0.7852    | Article Id: LR-3779 | Page : 784-787
Citation :- Laboratory evaluation of certain bio-pesticides against the larvae of Helicoverpa armigera Hubner .Legume Research.2018.(41):784-787

*P.K. Ojha, R. Kumari and N.K.Pandey
 

pkojha2@gmail.com
Address :

University Department of Zoology, L.N. Mithila University, Darbhanga-846 004, Bihar, India

Submitted Date : 14-09-2016
Accepted Date : 9-11-2016
First Online:

Abstract

Applications of Helicoverpa armigera Nuclear Polyhedrosis Virus (HaNPV), Quinalphos, Bacillus thuringiensis kurstaki (Btk) and Beauveria bassiana (B.b.) as full doses gave hundred percent larval mortality to the test insect, 2nd instar larvae of Helicoverpa armigera. Treatment combinations containing half doses of HaNPV + Btk, HaNPV + B.b., HaNPV + Quinalphos, Btk + B.b., Btk + Quinalphos, B.b.+ Quinalphos, also gave cent percent larval death.  Azadirachtin as half dose of application was found to be least effective (50%). However, all the treatment combinations were found effective over the untreated control. 

Keywords

chickpea Helicoverpa armigera Interactive effect Laboratory conditions Larval mortality Pesticides 2nd instar larvae

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