Abstract
50, 100, 150, 200, 250, 300, 350 and 400 ppm. of crude leaf concentrations. For the individual crude leaf extracts all the six solvent extracts of the plants showed good larvicidal activity. The highest potency was recorded by DCM extract of pyrethrum (LC 50 164.68 ppm, LC 90 255.17 ppm) achieving 100% mortality of the larvae. Ethanol extract of pyrethrum also exhibited appreciable larvicidal activity at 167.78 ppm depicting 89.70% larval mortality than same extracts of Nicotiana tabaccum (189.58 ppm) and E. camaldunsisis (210.15 ppm) causing 75.0% and 78..5% mortality respectively. The rest of the extracts i.e methanol, hexane, ethyl, acetate and aqueous exhibited a range of remarkable and varying activities i.e pyrethrum methanol 224. 45ppm, E. camaldulensis hexane 198.56 ppm, N. tabaccum ethyl acetate 201.52 ppm and pyrethrum aqueous 247.84 ppm exhibiting mortality of 79.41%, 73.65%, 85.08% and 77.
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Claims 0
Judged off_topic: no plant question — claims were not extracted. This is a scope decision by the model, not a statement about the paper’s findings.