Population Dynamics and Management of Hadda Beetle, Henosepilachna vigintioctopunctata (Fab.) on Indian Ginseng, Withania somnifera (L.) Dunal

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dc.contributor.advisorKumawat, K.C.
dc.contributor.authorKumari ,Neelam
dc.date.accessioned2024-06-24T14:40:38Z
dc.date.available2024-06-24T14:40:38Z
dc.date.issued2022
dc.description.abstractThe investigation entitled „Population dynamics and management of hadda beetle, Henosepilachna vigintioctopunctata (Fab.) on Indian ginseng, Withania somnifera (L.) Dunal‟ was conducted at Entomology Department, S.K.N. College of Agriculture, Jobner (Rajasthan) during Kharif, 2021. The study on the population dynamics revealed that the infestation of hadda beetle, Henosepilachna vigintioctopunctata (Fab.) (grub and adult) started in the first week of September and reached at peak in second week of October. Hadda beetle population (grub and adult) had significant positive correlation with maximum temperature (r=0.64), while the minimum temperature, relative humidity and rainfall showed non-significant correlation with it. The population of hadda beetle, H. Vigintioctopunctata (egg batch) had significant positive correlation with maximum temperature (r= 0.65) and non-significant correlation with minimum temperature, relative humidity and rainfall. The natural enemies of insect pests recorded in the Indian ginseng were chrysopid, Chrysoperla zastrowi arabica (Henry et al.), Camponotus compressus (Fab.), Monomorium indicum Forel and spider. Their populations were found in traces only. Therefore the population could not be recorded. The duration of egg, grub, pupa and adult stages were found to be 7.7, 14.5, 5.9 and 57.5, days respectively. Both grubs and adults were found destructive in nature. The average body length of 1st, 2nd, 3rd and 4th instar grub was 2.05 ± 0.34 mm, 3.03 ± 0.24 mm, 4.18± 0.10 mm, 6.21± 0.27 mm and 3.11± 0.29 mm, respectively. The average body breadth of 1st, 2nd, 3rd and 4th instar grub was 1.11±0.17 mm, 1.42± 0.06 mm, 1.89± 0.25 mm and 3.11± 0.29 mm, respectively. The average pre pupal length was 5.01± 0.46 mm and breadth was 2.71± 0.33 mm. The average pupal length was 5.98± 0.05 mm and breadth was 3.64± 0.24 mm. The average body length of male was 6.21± 0.17 mm and breadth was 4.62± 0.28mm, whereas in female the length was 7.15± 0.28 mm and breadth was 5.19± 0.27mm. Out of eight biopesticides and botanicals tested against hadda beetle on Indian ginseng crop, revealed that azadirachtin (0.03 EC) 5 ml/ l proved to be most effective followed by Neem oil and Neem seed kernel extract (5%) and B.bassiana (1.15 WP). The treatment ofL. lecanii (1.15 WP) and M. anisopliae (1.15 WP) were ranked in middle order of efficacy, while the plant products, viz., Karanj seed extract (5.0 %) and Karanj oil proved to be the least effective.
dc.identifier.urihttps://krishikosh.egranth.ac.in/handle/1/5810210809
dc.keywordsPopulation Dynamics and Management
dc.keywordsHadda Beetle
dc.keywordsHenosepilachna vigintioctopunctata
dc.language.isoEnglish
dc.research.problemPopulation Dynamics and Management of Hadda Beetle, Henosepilachna vigintioctopunctata (Fab.) on Indian Ginseng, Withania somnifera (L.) Dunal
dc.subEntomology
dc.themePopulation Dynamics and Management of Hadda Beetle, Henosepilachna vigintioctopunctata (Fab.) on Indian Ginseng, Withania somnifera (L.) Dunal
dc.these.typeM.Sc
dc.titlePopulation Dynamics and Management of Hadda Beetle, Henosepilachna vigintioctopunctata (Fab.) on Indian Ginseng, Withania somnifera (L.) Dunal
dc.typeThesis
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