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VCRB :: Contents of Volume 56/2002 :: Detailed information


EFFECTIVENESS OF NEW PLANT INSECTICIDES OBTAINED FROM NEEM-TREE (AZADIRACHTA INDICA JUSS.) AGAINST CABBAGE APHID (BREVICORYNE BRASSICAE)


Roman PAVELA1, Martin BARNET1, André BELANGER2, Marcel BROSSEAU3
1. Research Institute of Crop Production,Drnovska 507, 161 06, Praha 6 - Ruzyne, Czech Republic 2. CRDH, Agriculture et Agroalimentaire Canada Saint-Jean-sur-Richelieu, Québec Canada J3B 3E6 3. PRONATEX inc., 1, avenue Pine, C.P.340, Richmond (Québec), Canada J0B 2HO


Summary

Two plant insecticides gained from Neem-tree (Azadirachta indica Juss.) were evaluated 
as regards their effectiveness in cabbage aphid (Brevicoryne brassicae) control.
The insecticides were applied in a spray form. The insecticide Fasoneem (with active
component azadirachtin) applied as a 6% water solution caused the highest insect
mortality of 73.7%, 8 days after application. After spraying, the average growth
of aphids in colonies in  comparison with control considerably decreased or stagnated.
Pronatex-P554, with active ingredient potassium salts of fatty acids, applied as
a 4% water solution caused 100% mortality 2 days after application. Other examined
concentrations of the insecticide,  limited the number of aphids  in comparison with
control significantly. The growth of aphid populations was  decreased.


keywords:Neem-tree, azadirachtin, insecticide, cabbage aphid

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