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achaea janata

International Journal of Tropical Insect Science (1)

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Toxic, Growth-Inhibitory and Antifeedant Activity of Gliricidia sepium Jacq. Leaf Extract against Dysdercus koenigii Fabricius, Achaea janata Linnaeus and Spodoptera litura Fabricius
K. Parvathi, Kaiser Jamil
Journal:

Insect Science and Its Application / Volume 19 / Issue 2-3 / September 1999

Published online by Cambridge University Press:

19 September 2011, pp. 217-222

Print publication:

September 1999
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Evaluations of toxicity, antifeedant, growth-regulatory activity of the methanol extract of Gliricidia sepium leaves were carried out against Dysdercus koenigii Fabr. (Heteroptera: Pyrrhocoridae), Achaea Janata Linn, and Spodoptera litura Fab., (both Lepidoptera: Noctuidae). Topical application of 100-300 μg of the extract to different stages of the test insects resulted in dose-dependent effects including larval-pupal intermediates and deformed adults. The highest tested dosage (300 μg/ μl) resulted in reduced survival rate and morphological abnormalities. At certain doses a strong antifeedant activity was evident against the lepidopteran insects.