Abstract
Carica papaya and Aloe barbadensis leaf extracts in different solvents like alcohol, acetone, acetic acid and water assessed for the insecticidal activity to mustard aphid (Lipaphis erysimi Kalt.). The laboratory assay with different concentrations (100, 200, 400 and 800 ppm) showed significant mortality in mustard aphids. The C. papaya leaves extract @ 400 ppm showed mortality of insects in acetic acid, alcohol, water and acetone extracts by 100, 25, 20 and 4% after 24 h, with LC50 values of 32.5, 1397.2, 1120.0 and 7770.5 ppm, respectively. The A. barbadensis leaves extracts @ 800 ppm also showed mortality of insects in Acetic acid followed by water, alcohol and acetone extracts 100, 44, 28 and 12 % with LC50 values of 116.2, 1062.4, 1541.9 and 2614.9 ppm, respectively. The study suggests some insecticidal attributes in acetic acid extract fraction of C. papaya.
