Priyanka Bairagi1*, P.K. Bhagat2, G.P. Painkra3, K.L. Painkra4, Neelam Chouskey5 and Sachin Kumar Jaiswal6
1-4,6Department of Entomology, 5Department of Statistics IGKV-Raj Mohini Devi College of Agriculture and Research Station, Ambikapur (497001) Surguja (Chhattisgarh), India
Email: bairagipriyanka1519@gmail.com
Received-06.08.2022, Revised-17.08.2022, Accepted-29.08.2022
Abstract: The present investigation entitled “Screening of pigeonpea (Cajanus cajan L.) genotypes against pod borer (Helicoverpa armigera Hubner) was conducted at the research-cum Instruction farm of Raj Mohini Devi College of Agriculture (C.G.) during Kharif season 2021-22. Pod borer (Helicoverpa armigera Hubner) was one of the major damaging pests of pigeonpea crop. Damaging stage of pod borer was caterpillar. Pod borer was recorded weekly interval that is 53 SMW (26th December to 1st January) and 1 SMW (2nd January to 8th January) then pod damage per cent reached minimum CG Arhar 1-ch with 5.38 per cent followed by RP 1, Rajeevlochan-ch, RPS 2014-35, RPS 2014-29, RPS 2014-6 , RPS 2014-1 and CG Arhar 2-ch, RPS 2014-22, RPS 2014-23, RPS 2014-30, RPS 2014-21, RPS 2014-8, RPS 2014-10, RPS 2014-19 and RPS 2014-11 with 7.32, 8.55, 10.19, 10.87, 12.19, 13.97, 16.10, 17.18,18.53,19.34, 20.50, 21.07, 22.86 and 24.36 per cent pod damage respectively, whereas the maximum pod damage was observed in RPS 2014-11 with 26.88 per cent. Grain damage per cent which varied from 6.34 to 25.65 per cent. the check genotype minimum grain damage by H. armigera Hubner was observed in genotype CG Arhar 1-ch with 6.34 per cent followed by RP 1, Rajeevlochan- ch , RPS 2014-35, RPS 2014-29, RPS 2014-6, RPS 2014-1, CG Arhar 2-ch, RPS 2014-22, RPS 2014-23, RPS 2014-30, RPS 2014-21, RPS 2014-8, RPS 2014-10, RPS 2014 -19 and RPS 2014-11 with 6.89, 7.69, 9.17, 10.57, 12.32, 12.97, 13.52, 15.61, 16.76, 16.98, 17.33, 17.99, 19.42, 23.89 Per cent grain damage respectively, whereas the maximum grain damage was observed in RPS 2014-11 with 25.65 per cent.
Keywords: Grain damage, Helicoverpa armigera Hubner, Pod damage, Genotypes
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