Shubham S. Patil1, Vaishali P. Sawant2* and Devadatta G. Jondhale3
1Department of Agril. Entomology, College of Agriculture, Dapoli. Dr. Balasaheb Sawant Konkan Krishi Vidyapeeth, Dapoli, Ratnagiri (M.S.).
2,3Regional Agricultural Research Station, Karjat, District–Raigad (M.S.).
Email: vps_25478@rediffmail.com
Received-06.11.2022, Revised-17.11.2022, Accepted-27.11.2022
Abstract: Pulses are mainly damaged by bruchids in storage. To manage pulse beetles/bruchids organically, the research work on ‘Effect of different organic products on pulse beetle, Callosobruchus maculatus Fab. (Coleoptera: Chrysomelidae) infesting cowpea’ was carried out in the laboratory at the Department of Agricultural Entomology, College of Agriculture, Dapoli at room temperature 25 ± 30oC and Relative humidity 85 ± 2 per cent during the year 2019-20. Eight different organic products like Agniastra, Jeevamrit, Ghanajeevamrit, Brahmastra, Neemastra, Mixed-leaf extract, Dashparni extract and Chilli-Garlic extract at 3% concentration were tested against pulse beetle, Callosobruchus maculatus Fab. Homogenous fifth susceptible generation of pulse beetle, C. maculatus was taken as test insect and cowpea as a test pulse. During developmental studies, observations on efficacy of various parameters like fecundity, developmental period, adult emergence, adult longevity, weight loss, germination percentage etc. were recorded. Mean oviposition period of C. maculatus on cowpea ranged from 4 to 6.67 days, highest fecundity was observed in untreated control i.e. 679.67 and lowest in Dashparni extract i.e. 514.33 and same results observed in adult emergence i.e. 611.33 and 403.67. Due to different organic products, development period ranged from 22.67-27.00 days, adult longevity in female was ranging between 8.67 to 11.33 days whereas in male, it ranged from 7.00 to 9.67 days. Mean per cent weight loss ranged from 8.79 to 9.98% in cowpea. Mean germination percentage was highest in Jeevamrit and Ghanajeevamrit amongst all different pulses.
Keywords: Pulse beetle, cowpea, Callosobruchus maculates, chilli-garlic extract
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