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Field evaluation of aqueous extract of Melia azedarach Linn seeds against cabbage aphid, Brevicoryne brassicae Linn Homoptera Aphididae, and its predator Coccinella septempunctata Linn Coleoptera Coccinellidae



Field evaluation of aqueous extract of Melia azedarach Linn seeds against cabbage aphid, Brevicoryne brassicae Linn Homoptera Aphididae, and its predator Coccinella septempunctata Linn Coleoptera Coccinellidae



Archives Of Phytopathology And Plant Protection 45(11): 1273-1279



Aqueous extract of Melia azedarach seeds were tested against cabbage aphid, Brevicoryne brassicae, and its predator Coccinella septempunctata in a cabbage field. The field experiment was conducted at Bridge to Israel children village farm, around the vicinity of Tewodros campus, University of Gondar, where the cabbage was grown fully organically. A field experiment was started in the middle of April 211 and completed at the end of May 21The experiment was conducted in a randomised block design (RBD). For the field trial, a total of 12 plots were prepared with 1 m2 area for data collection. The powdered M. azedarach seeds were used to prepare 5% concentration of aqueous solution and sprayed. Before spraying, percentage of aphid infestation was recorded from the control plot and the experimental plot. The average percentage of cabbage infestation in the control plot was 72% and in the experimental plot before treatment was 8.85%. The percentage reduction of aphid population was 19.6% after the first.

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Accession: 036474350

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DOI: 10.1080/03235408.2012.673260


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