caa a22 4500 388105763 CHVBK 20180307125337.0 cr unu---uuuuu 161130e199909 xx s 000 0 eng 10.1017/S1742758400019536 doi S1742758400019536 pii (NATIONALLICENCE)cambridge-10.1017/S1742758400019536 Insecticidal Activity of Ageratum conyzoides L. Volatile Oil against Callosobruchus maculatus F. in Seed Treatment and Fumigation Laboratory Tests [Elektronische Daten] A laboratory study was carried out to assess the effects of seed treatment and fumigation of artificially infested cowpea with the volatile oil of air-dried leaves of Ageratum conyzoides L. (Asteraceae). The oil exerted acute toxicity on adults of the cowpea weevil, Callosobruchus maculatus F. upon fumigation. Maximal mortality of 95-97% was inflicted by 60 μl oil. Application of oil dressing on cowpea seed exhibited remarkable insecticidal activity-against the weevil. Significant oviposition deterrency and complete inhibition of emergence of adult insects (F1 offspring) from oil-treated beans were evident at doses of 2.5 μl to 10 μ1/9.5 g beans. No adverse physical effects on the beans were noticed at these doses. The major isolate of the essential oil, precocene I, was four times as active as the oil. Copyright © ICIPE 1999 cowpea nationallicence Ageratum conyzoides nationallicence volatile oil nationallicence precocene I nationallicence insecticidal activity nationallicence Callosobruchus maculatus nationallicence niébé nationallicence Ageratum conyzoides nationallicence huile volatile nationallicence précocène I nationallicence pouvoir insecticide nationallicence Callosobruchus maculatus nationallicence Gbolade A. A. Department of Pharmacognosy, Faculty of Pharmacy, Obafemi Awolowo University, Ile-Ife, Nigeria Onayade O. A. Department of Pharmacognosy, Faculty of Pharmacy, Obafemi Awolowo University, Ile-Ife, Nigeria Ayinde B. A. Department of Pharmacognosy, Faculty of Pharmacy, University of Benin, Benin-City, Nigeria International Journal of Tropical Insect Science Cambridge University Press 19/2-3(1999-09), 237-240 1742-7584 19:2-3<237 1999 19 JTI https://doi.org/10.1017/S1742758400019536 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1017/S1742758400019536 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Gbolade A. A. Department of Pharmacognosy, Faculty of Pharmacy, Obafemi Awolowo University, Ile-Ife, Nigeria NATIONALLICENCE 700 1- Onayade O. A. Department of Pharmacognosy, Faculty of Pharmacy, Obafemi Awolowo University, Ile-Ife, Nigeria NATIONALLICENCE 700 1- Ayinde B. A. Department of Pharmacognosy, Faculty of Pharmacy, University of Benin, Benin-City, Nigeria NATIONALLICENCE 773 0- International Journal of Tropical Insect Science Cambridge University Press 19/2-3(1999-09), 237-240 1742-7584 19:2-3<237 1999 19 JTI CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge