SURVEILLANCE AND MANAGEMENT PRACTICES FOR POD BORER, Helicoverpa armigera (Hubner) ON CHICKPEA CROP AT KABIRDHAM, CHHATTISGARH

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dc.contributor.advisorChandrakar, H.K.
dc.contributor.authorBhagat, Jai
dc.contributor.otherSoni, V.K.
dc.contributor.otherGupta, Rajeev
dc.contributor.otherSharma, R.N.
dc.contributor.otherChandrakar, Gayatri
dc.date.accessioned2020-12-31T10:08:52Z
dc.date.available2020-12-31T10:08:52Z
dc.date.issued2020
dc.description.abstractABSTRACT The present investigation entitled “Surveillance and management practices for pod borer, Helicoverpa armigera (Hubner) on chickpea crop at Kabirdham, Chhattisgarh” was conducted during rabi 2016-17 and 2017-18 “at Sant Kabir College of Agriculture & Research Station,”Krishi Vigyan Kendra and farmers field of blocks - Sahaspur Lohara and Kawardha of district Kabirdham, Chhattisgarh. Number of Heliothis armigera larvae first appeared in 51st SMW (17-23 Dec.) with 1.69 larvae/mrl. The maximum numbers of H. armigera larvae (3.92 larvae/mrl) were noticed during 5th SMW (29 Jan-04 Feb.) and gradually decreased to (0.29 larvae/mrl) during 11th SMW (12-18 March). The population of H. armigera larva showed non-significant negative correlation with minimum temperature (r = - 0.540) however, relative humidity (r = 0.845) showed highly significant positive correlation with H. armigera larva population. Entomopathogenic virus NPV infected larva was first appeared in 52nd SMW (24-31 December) with 0.06 larvae/mrl and maximum NPV infected larva (0.27 larvae/mrl) was noticed during 6th SMW (05-11 February) while, the number of NPV infected larvae gradually decreased to (0.07 larvae/mrl) during 8th SMW (19-25 February). NPV infected larvae showed highly significant positive correlation with morning relative humidity with r value of 0.812. Campoletis chloridae, a larval parasitoid, were first appeared during 52nd SMW (24-31 December) with 0.19 larvae/mrl. The maximum number of parasitoid larvae (0.47 larvae/mrl) were noticed during 4th SMW (22-28 January) however, their number gradually decreased to (0.13 larvae/mrl) during 10th SMW (05-11 March). C. chloridae showed highly significant positive correlation with relative humidity (r = 0.746) at Sahaspur Lohara block during rabi 2016-17 and 2017-18, respectively.” Number of H. armigera larvae first appeared in 50th SMW (10-16 Dec.) with 0.20 larvae/mrl. Maximum number of H. armigera larvae (4.06 larvae/mrl) were noticed during 5th SMW (29Jan-04Feb.) however, their number gradually decreased to (0.18 larvae/mrl) during 11th SMW (12-18 March). The population of H. armigera larva Showed highly positive significant correlation with relative humidity with r value of 0.860. NPV infected larvae was first appeared during 52nd SMW (24-31 Dec.) with 0.10 larvae/mrl. The maximum NPV infected larvae (0.30 larvae/mrl) were noticed during 5th SMW (29Jan-04Feb.) while, their number gradually decreased to (0.05 larvae/mrl) during 10th SMW (05-11 March.). NPV infected larva showed significant highly positive correlation with morning relative humidity (r = 0.804). Campoletis chloridae a larval parasitoid was first appeared in 52nd SMW (24-31 Dec.) with 0.07 larvae/mrl. Maximum parasitoid population were noticed during 7th SMW (12-18 Feb.) with 0.39 larvae/mrl. however, their number gradually decreased to 0.05 larvae/mrl during 11th SMW (12-18 March). C. chloridae larva showed significant highly positive correlation with relative humidity (r = 0.820) at block- Kawardha during rabi 2016-17 and 2017-18, respectively. The catches of male moth of H. armigera was noticed during 51st standard week (17-23 Dec.) with 0.49 moths/trap/week in pheromone traps which increased gradually and reached its peak (43.45 moths/trap/week) during 6th standard week (5-11 Feb.) and started decreasing from 5th standard week (29-04 Feb.) and reached to a minimum of 1.73 moths/trap/week during 11th standard week (12-19 March). During catches in pheromone traps, the larval population was minimum during 52nd standard week (24-31 Dec.) with 0.08 larvae/mrl and gradually reached its peak during 6th standard week (5-11 Feb.) with 5.78 larvae/mrl. The male moth catches in pheromone traps and larva of H. armigera were highly significant positively correlated with relative humidity with the r value of 0.813 and 0.823 at Sant Kabir College of Agriculture and Research Station, Kawrdha during 2016-17 and 2017-18, respectively. The catches of male moth of H. armigera were noticed during 51st standard week (17-23 Dec.) with 0.40 moths/trap/week, which increased gradually and reached its peak with 33.37 moths/trap/week during 5th standard week (29 Jan.-4 Feb.) and reduced to a minimum of 0.76 moths/trap/week in 11th standard week (12-18 March). During catches in pheromone traps, larval population was minimum in 51th standard week (17-23 Dec.) with 0.07 larvae/mrl and gradually reached its peak during 6th standard week (5-11 Feb.) with 5.90 larvae/mrl. The male moth catches in pheromone traps and larvas of H.armigera were highly significant positively correlated with relative humidity with the r value of 0.824 and 0.825 at KVK, Kabirdham during 2016-17 and 2017-18, respectively.) The overall mean showed that mean number of larvae per meter row length was minimum in NSKE (0.78 larva/mrl), Bacillus thuringiensis kurstaki (Btk) (0.92 larva/mrl) and followed by Beauveria bassiana (1.05 larva/mrl) over untreated control (1.74 larva/mrl). Similarly, after Ιst and ІΙnd spray the Karanj oil treatment showed 1.16 larva/mrl of H. armigera per meter row length. The pod damage per cent was significantly reduced in treatments with NSKE (3.97%) and at par with B. thuringiensis (4.45%) followed by B. bassiana (7.14%) and Karanj oil (7.73%). The untreated control plot has recorded maximum pod damage of 10.82 per cent from H. armigera. The maximum yield of 16.73Q/ha. were obtained in treatment with NSKE at par with B. thuringiensis (14.91Q/ha.) followed by B. bassiana (11.87Q/ha.) and Karanj oil (10.94Q/ha.) as against the lowest yield of 8.69 Q/ha. in untreated control at Sant Kabir College of Agriculture and Research Station, Kawardha during rabi 2016-17 and 2017-18, respectively. The overall mean showed that mean number of larvae per meter row length was low in NSKE (1.11larva) at par with B. thuringiensis (1.24 larva /mrl) followed by B. bassiana (1.41 larvae/mrl) over untreated control (2.20 larvae/mrl). Similarly, after Ιst and ІΙnd spray the Karanj oil (1.70/mrl) larvae of H.armigera per meter row length. The pod damage per cent was significantly reduced in treatments with NSKE (2.95%) followed by B. thuringiensis (5.06%), B. bassiana (6.84%) and Karanj oil (8.05%). The untreated control recorded maximum pod damage of 11.54 per cent from H.armigera. The maximum yield of (15.80 Q/ha.) were obtained in treatment with NSKE and at par with B. thuringiensis (14.62 Q/ha.) followed by B. bassiana (1127 Q/ha.) and Karanj oil (11.75 Q/ha.) as against the lowest yield of 8.06 Q/ha. in untreated control at Krishi Vigyan Kendra, Kabirdham during rabi 2016-17 and 2017-18, respectively.” The LC50 values of B. bassiana for larval bioassay of H. armigera were 4168.69 and 3715.35 g/ha. however the LC50 values of B. thuringiensis kurstaki (Btk) were found as 446.68 and 480.00 ml/ha, analysed at 120 hours after treatment respectively during first and second experiment.en_US
dc.identifier.urihttps://krishikosh.egranth.ac.in/handle/1/5810157990
dc.keywordsHelicoverpa armigera, POD BORERen_US
dc.language.isoEnglishen_US
dc.pages203p.en_US
dc.publisherIndira Gandhi Krishi Vishwavidyalaya, Raipuren_US
dc.research.problemSURVEILLANCE AND MANAGEMENT PRACTICES FOR POD BORER, Helicoverpa armigera (Hubner) ON CHICKPEA CROP AT KABIRDHAM, CHHATTISGARHen_US
dc.subAgricultural Entomologyen_US
dc.themeSURVEILLANCE AND MANAGEMENT PRACTICES FOR POD BORER, Helicoverpa armigera (Hubner) ON CHICKPEA CROP AT KABIRDHAM, CHHATTISGARHen_US
dc.these.typePh.Den_US
dc.titleSURVEILLANCE AND MANAGEMENT PRACTICES FOR POD BORER, Helicoverpa armigera (Hubner) ON CHICKPEA CROP AT KABIRDHAM, CHHATTISGARHen_US
dc.typeThesisen_US
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