Gikonyo, Nicholas K.Mwangi, Richard W.Midiwo, Ogweno J.2012-10-232012-10-231998-09Science International Journal of Tropical Insect Science / Volume18 / Issue03 / September 1998, pp 229-234http://ir-library.ku.ac.ke/handle/123456789/5806Laboratory studies were conducted to assess the toxicity and growth-inhibitory activity against Aedes aegypti larvae, of the crude acetone extracts of Polygonum senegalense (Meissn.) leaves, its flavonoid component 2',6'-dihydroxy-4'-methoxydihydrochalcone and the internal tissue flavanol quercetin. The first two showed significantly high insecticidal and growth-inhibitory activity even at low concentrations, whereas quercetin was toxic only at concentrations above 7μg/ml.enAedes aegyptiflavonoidsgrowth inhibitionmosquitoestoxicantsPolygonum senegalaiseArticle