The Life Table Studies and Management of Helicoverpa armigera (Hubner) in Chickpea at Bundelkhand Region of Uttar Pradesh

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dc.contributor.advisorSingh, S.K.
dc.contributor.authorChauhan, Abhishek Singh
dc.date.accessioned2022-01-25T05:56:12Z
dc.date.available2022-01-25T05:56:12Z
dc.date.issued2021-10-01
dc.description.abstractChickpea (Cicer arietinum L.) is the important legume crop of India. The gram pod borer, Helicoverpa armigera (Hubner) is one of the major biotic constraint in increasing production and productivity of chickpea crop across the country including Bundelkhand region. Thus, present experiment was conducted on the life table study at PG laboratory Department of Entomology and eight treatments with three replications including untreated check were used for the management of H. armigera (Hubner) in RBD design on chickpea crop at Students Experimental farm of Banda University of Agricultural & Technology, Banda during 2019-20 and 2020-21. In the life table study, natural mortality i.e. 2.05%, 18.19%, 4.85% and 1.98% and was observed in younger group larvae, older group larvae, pupal stage and adult stage, during 2019-20 and 1.41%, 14.23%, 5.25% and 1.76% during 2020-21, respectively. Generation survival was recorded 0.75 and 0.80 during 2019-20 and 2020-21 and the trend index value was calculated to the tune of 0.013 during both the years. After first and second spray of biorational insecticides, minimum mean larval population was recorded in chlorantraniliprole 18.5 SC during 2019-20 and 2020-21 whereas maximum mean larval population was found in control. All the treatments were significantly better than control. Percent larval reduction over control was highest in Chlorantraniliprole 18.5 SC, whereas it was lowest in NSKE 5% and the minimum pod damage and the maximum yield (1959.51 kg/ha during 2019-20 and 1857.51 kg/ha during 2020-21) was recorded on Chlorantraniliprole 18.5 SC and minimum yield (1390.05 kg/ha during 2019-20 and 1294.33 kg/ha during 2020-21) was found in control. The best treatment was found Emamectin benzoate keeping in view the cost: benefit ratio with 1:4.62 and second most effective HaNPV with 1:4.01. The treatment Chlorantraniliprole ranked on third position in terms of cost benefit ratio with 1:3.59. The minimum cost benefit ratio was recorded on NSKE 5% with 1:2.06. However, best, and second most effective treatment was recorded Chlorantraniliprole and Emamectin benzoate, respectively, in terms of declining larval population, percent pod damage and yield. Thus, on the basis of the present finding, natural mortality factors operating during the larval period were not sufficient in declining the pest population in succeeding generations due to the positive value of trend index (I) and management of H. armigera is recommended by Emamectin benzoate and HaNPV. It is recommended to conduct future research work on the conservation and augmentation of the natural enemies especially Campoletis chlorideae to get negative trend index value during larval period and test some more safer new molecules to minimize the larval population of H. armigera.en_US
dc.identifier.citationAbhishek Singh Chauhan 2021. The Life Table Studies and Management of Helicoverpa armigera (Hubner) in Chickpea at Bundelkhand Region of Uttar Pradesh. M.Sc. Thesis. 67p.en_US
dc.identifier.urihttps://krishikosh.egranth.ac.in/handle/1/5810181201
dc.language.isoEnglishen_US
dc.pages1-67,XIIen_US
dc.publisherBanda University of Agriculture & Technology, Banda-210001, Uttar Pradesh, Indiaen_US
dc.subEntomologyen_US
dc.themeAcademic Researchen_US
dc.these.typeM.Scen_US
dc.titleThe Life Table Studies and Management of Helicoverpa armigera (Hubner) in Chickpea at Bundelkhand Region of Uttar Pradeshen_US
dc.typeThesisen_US
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