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<p>Laboratory experiments were carried out in 2021 to determine the effect of lemon grass [<i>Cymbopogon flexusus</i> (Nees ex Steud) Wats.], mustard (<i>Brassica juncea</i> L.), coconut (<i>Cocos nucifera</i> (L.)), neem (<i>Azadirachta indica</i> A. Juss.) and castor (<i>Ricinus communis</i> L.) oils on the mortality, oviposition, seed damage, emergence of adult <i>Callosobruchus chinensis</i> F. infesting horse gram or kulthi, <i>Macrotyloma uniflorum</i>, as well as weight loss and germination of horse gram seeds after storing the treated seeds for up to 5 months. The results indicated significant reductions in oviposition, progeny emergence, seed damage, and increased mortality with a single application of the tested oils at 10&#xa0;ml/kg seeds compared to the untreated control. Lemongrass and castor oils were more effective in terms of oviposition reduction, prevention of adult emergence and minimum weight loss of horse gram seeds than other oil treated seeds. No harmful effects were observed on the germination of oil-treated seeds for up to five months of storage. Among the different tested oils, the use of castor or mustard oil was more economical compared to other oils and can be recommended for use in horse gram seeds for long term storage (up to five months). In addition, the fecundity rate of <i>C. chinensis</i> on horse gram was 68.4 ± 13.28 per female. This study was the first time it was carried out to control <i>C. chinensis</i> in stored horse gram.</p>

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Evaluation of essential and vegetable oils against pulse beetle, Callosobruchus chinensis (Coleoptera: Chrysomelidae) infesting horse Gram, Macrotyloma uniflorum Lam. (Verdc.)

  • 期刊论文

  • 发表日期：

    2025年3月18日

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  • Atanu Seni,
  • Rini Pal,
  • Sanjukta Mohapatra,
  • Sushilkumar Bansude

摘要

Laboratory experiments were carried out in 2021 to determine the effect of lemon grass [Cymbopogon flexusus (Nees ex Steud) Wats.], mustard (Brassica juncea L.), coconut (Cocos nucifera (L.)), neem (Azadirachta indica A. Juss.) and castor (Ricinus communis L.) oils on the mortality, oviposition, seed damage, emergence of adult Callosobruchus chinensis F. infesting horse gram or kulthi, Macrotyloma uniflorum, as well as weight loss and germination of horse gram seeds after storing the treated seeds for up to 5 months. The results indicated significant reductions in oviposition, progeny emergence, seed damage, and increased mortality with a single application of the tested oils at 10 ml/kg seeds compared to the untreated control. Lemongrass and castor oils were more effective in terms of oviposition reduction, prevention of adult emergence and minimum weight loss of horse gram seeds than other oil treated seeds. No harmful effects were observed on the germination of oil-treated seeds for up to five months of storage. Among the different tested oils, the use of castor or mustard oil was more economical compared to other oils and can be recommended for use in horse gram seeds for long term storage (up to five months). In addition, the fecundity rate of C. chinensis on horse gram was 68.4 ± 13.28 per female. This study was the first time it was carried out to control C. chinensis in stored horse gram.