ISBN: 9786205801673 - insecticidal activity of plants: insecticidal activity of some plants in the far north region (7 resultados)

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Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -This study aims to evaluate the insecticidal activity of some plants from the far north of Cameroon. Leaves and/or barks of four local plants (Azadirachta indica, Boswellia dalzeilii, Khaya senegalensis and Ocimum canum) were harvested, dried and ground into powder for the formulation of insecticidal sticks at different doses. Toxicity tests were carried out on adult Culicidae by fumigation. They revealed low mortality rates after 15 minutes of exposure. The persistence due to the smoke of the sticks leads to high mortality rates after 6 and 24 hours of exposure. Mortality rates increased with dose for each plant species. Lethal doses were calculated 6 hours after exposure for each plant powder. Azadirachta indica leaf powder was the most effective because it had the lowest LD50 value of 36.14%. These plant powders can be used as natural insecticides instead of chemical insecticides. 64 pp. Englisch.…

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Condición: New. Dieser Artikel ist ein Print on Demand Artikel und wird nach Ihrer Bestellung fuer Sie gedruckt. Autor/Autorin: Sadou IsmaelDr. SADOU ISMAEL is a Senior Researcher at MINRESI in Cameroon and holds a PhD in Agronomy.This study aims to evaluate the insecticidal activity of some plants from the far north of Cameroon. Leaves and/or barks of fo.…

Taschenbuch. Condición: Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - This study aims to evaluate the insecticidal activity of some plants from the far north of Cameroon. Leaves and/or barks of four local plants (Azadirachta indica, Boswellia dalzeilii, Khaya senegalensis and Ocimum canum) were harvested, dried and ground into powder for the formulation of insecticidal sticks at different doses. Toxicity tests were carried out on adult Culicidae by fumigation. They revealed low mortality rates after 15 minutes of exposure. The persistence due to the smoke of the sticks leads to high mortality rates after 6 and 24 hours of exposure. Mortality rates increased with dose for each plant species. Lethal doses were calculated 6 hours after exposure for each plant powder. Azadirachta indica leaf powder was the most effective because it had the lowest LD50 value of 36.14%. These plant powders can be used as natural insecticides instead of chemical insecticides.…

Taschenbuch. Condición: Neu. This item is printed on demand - Print on Demand Titel. Neuware -This study aims to evaluate the insecticidal activity of some plants from the far north of Cameroon. Leaves and/or barks of four local plants (Azadirachta indica, Boswellia dalzeilii, Khaya senegalensis and Ocimum canum) were harvested, dried and ground into powder for the formulation of insecticidal sticks at different doses. Toxicity tests were carried out on adult Culicidae by fumigation. They revealed low mortality rates after 15 minutes of exposure. The persistence due to the smoke of the sticks leads to high mortality rates after 6 and 24 hours of exposure. Mortality rates increased with dose for each plant species. Lethal doses were calculated 6 hours after exposure for each plant powder. Azadirachta indica leaf powder was the most effective because it had the lowest LD50 value of 36.14%. These plant powders can be used as natural insecticides instead of chemical insecticides.VDM Verlag, Dudweiler Landstraße 99, 66123 Saarbrücken 64 pp. Englisch.…