Biochemical screening and larvicidal and ovicidal activity Citrus limon (l.) Burm. F. leaves against Helicoverpa armigera (Hub.)

Abstract

To estimate the larvicidal and ovicidal activity of ethanol, methanol and aqueous extracts of important medicinal plants of Citrus limon (L.) Burm. f. leaves at various concentrations against most devasting agricultural field pest Helicoverpa armigera. Highest ovicidal and larvicidal activity of C. limon methanol extract was 64% and 61% against H. armigera at 0.5% concentration. The lowest ovicidal and larvicidal activity was recorded in aqueous extracts 11% and 15% respectively. The study reports that C. limon is a potential source of natural larvicidal and ovicidal properties against the lepidopteran pest H. armigera.