Biology and management of pulse Beetle (Callosobruchus chinensis L.) on Green Gram in storage

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dc.contributor.advisorSingh, S. P. N.
dc.contributor.authorLimma, Sangita
dc.date.accessioned2020-11-23T09:02:52Z
dc.date.available2020-11-23T09:02:52Z
dc.date.issued2020
dc.description.abstractPulse beetle (Callosobruchus chinensis L., Coleoptera: Chrysomelidae) is a major stored grain pest of pulses in India causing major losses to pulses. A laboratory study was carried out on biology and management of pulse beetle (C. chinensis) on green gram var. HUM 16 at Department of Entomology, Dr. RPCAU, Pusa, Bihar during the year 2019-20. Study of biology of C. chinensis revealed that insect completes one generation from late August to last week of September, 2019. The egg of C. chinensis is cigar shaped, smooth in appearance and white in color which further changed to milky white color and opaque before hatching. This study indicates 4.3 ± 1.03 days of incubation period and 24.25 ± 1.65 days of larval and pupal period. The larve is apodous, short, stout, creamy color with brown color head and „C‟ shaped scarabeiform which makes a circular hole for its entry into seed while the pupal stage are inactive. Larval and pupal stage passed inside the seed. The adult beetles are small, oval shaped and red brown color with some patches of black, grey and white color on its elytra. This species shows sexual dimorphism where male having pectinate type of antenna and female having serrate type of antenna. The adult female was hefty and larger than male. Adult longevity of male was 7.10 ± 1.02 days and for female was 8.75 ± 1.33 days. Total developmental period was 36.3 ± 3.65 days. Pre oviposition, oviposition and post oviposition periods were 0.25 ± 0.44 days, 7.05 ± 0.75 days and 1.55 ± 0.51 days, respectively. Average number of egg laid per female i.e. fecundity was 105 eggs with hatchability of 92 per cent. Sex ratio of male and female was 1:1.27 where number of male was lower than number of female. Average multiplication rate from single pair was 87. Six plant powder viz. Neem leaf powder, Neem seed powder, Neem cake, Curry leaf powder, Chili fruit powder and Bael leaf powder each at 5g/kg and Mustard oil at 5ml/kg of grains were applied to test its effectiveness as protectant of grains against C. chinensis infestation. The result revealed that mustard oil and neem seed powder were more effective. However, all the treatments were better than untreated seed in protecting green gram seed. The descending order of remaining treatments was neem cake 5g/kg > neem leaf powder 5g/kg > curry leaf powder 5g/kg > chili fruit powder 5g/kg > bael leaf powder 5g/kg which were significantly superior over control. A comparatively less effectiveness was seen in curry leaf powder, chili fruit powder and bael leaf powder but these were superior over control. It was also found that treatments do not affect the germination of seeds. So, the botanicals are not only effective in giving protection against C. chinensis but also it does not affect seed germination.en_US
dc.identifier.otherM/Ento./310/2018-19
dc.identifier.urihttps://krishikosh.egranth.ac.in/handle/1/5810155565
dc.keywordsEntomology, Plant, Pathology, Biology, Management, Beetle, (Callosobruchus chinensis L.), Green Gramen_US
dc.language.isoEnglishen_US
dc.pages56 p. viien_US
dc.publisherDRPCAU, Pusaen_US
dc.subEntomologyen_US
dc.themeBiology and management of pulse Beetle (Callosobruchus chinensis L.) on Green Gram in storageen_US
dc.these.typeM.Scen_US
dc.titleBiology and management of pulse Beetle (Callosobruchus chinensis L.) on Green Gram in storageen_US
dc.typeThesisen_US
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