Williams, L.A.D.; Mansingh, Ajai
Author Affiliation, Ana.
Life Sciences (Botany and Zoology); Faculty of Pure and Applied Sciences
Pesticidal potentials of tropical plants I: Insecticidal activity in leaf extracts of sixty plants
Insect science and its application
Date of Publication
Crude ethanol extracts (CE) of leaves of 60 plant species belonging to 32 families and 52 genera were bioassayed for toxicity to adult Tribolium confusum by spraying a 10% (w/v) concentrate under a Potter's tower. CE of 8 plants had none and 3 had some bioactivity; 36 CE killed from 13% to 40% of the beetles. Thirteen plant extracts inflicted between 53% and 100% mortality in the following order: Azadirachta indica(53%) < Eupatorium odorantum=Gliricida sepium=Mimosa pudica (60%) < Annona reticulata=Hibiscus rosa sinensis(67%) < Cycloptis semicordata < Artocarpus altilis < Capsicum annum (90-97%) < Bontia daphnoides=Cuscuta americana=Dioscorea polygonoides=Nicotina tabacum (100%).....