Year: 2016, Issue: December

Exploration of Chromolaena odorata, Spilanthes paniculata, Tagetes minuta, Scorzonera undulta and Mantisalca duriaeri as insecticides against Callosobruchus chinensis Linn (Coleophera : Bruchidae).

Author:

B. S. Chandel and Arti Singh

Keyword:

Callosobruchus chinensis, Chromolaena odorata, Spilanthes paniculata.
Screening of plant extracts from wild species of plants for insecticidal properties could lead to the discovery of new agents for pest control. Keeping this in view, the ethanolic extracts of ten asteraceous plant materials viz.; C.odorata, S.paniculata (leaves), C.cinerariaefolium, I.racemosa (roots), M.duriaeri, Reichardia tingitana, Rhaponticum acaule, Tagetes minuta (flowers), Scorzonera undulate and Cichorium intybus (whole plants) were tested against for their biological efficacy against early emerged pulse beetle, C.chinensis L. (Coleoptera : Bruchidae). The results revealed that all of the tested materials had significant mortality against C.chinensis as compared to untreated check. The 100% mortality was obtained before termination of experiment. The total mean percent mortality observed for C.chinensis was C.odorata (73.24) > S.paniculata (63.41) > T.minuta (60.08) > S.undulata (52.30) > M.duriaeri (51.16) > C.cinerariaefolium (50.66) > R.tingitana (37.66) > R.acaule (27.91) > I.racemosa (25.83) > C.intybus (20.44 ), while synthetic insecticide Malathion showed (65.00) and control showed negligible effect, respectively.

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