Abstract
Feeding on Ricinus communis leaf treated with different concentrations (0.1, 0.3 and 0.5%) of ether extracts of Erithrina indica seed and Delonix regia flower against Ergolis merione, Porthesia scintillans and Spodoptera exigua resulted in high larval and pupal mortality. Food consumption, assimilation, conversion and fecundity decrease with increasing concentration. Larval mortality was 20 to 91 % and damage was decreased by 65% through the application of the highest concentration of each chemical.
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