The Effect of pyriproxyfen, hexaflumuron and flufenoxuron on the cabbage aphid, Brevicoryne brassicae L. (Hem., Aphididae), in canola field

The cabbage aphid, Brevicoryne brassicae L. (Hem., Aphididae), is an important pest of canola in Iran and causing serious direct and indirect damage to canola fields. In this research, effect of some IGRs such as: Pyriproxyfen, Hexaflumuron, flufenoxuron (at 500, 750, 1000 ppm concentration) and imidacloprid (1000 ppm concentration) on cabbage aphid was evaluated in growing season of 2008-2009 in Pasargard region of Fars province. Samplings were conducted before spraying and tree times after the spray at 3, 7 and 14 days interval. Statistical analysis of results including aphid mortalities as well as yield assessment showed that treatment of imidacloprid, inducing 87% mortality along with 1990 kg/ha yield, differed from the others, significantly. Among the insect growth regulators, hexaflumuron with 85% mortality, was the most percent of mortality and increased yield of crop. Based on overall results, hexaflumuron insecticide at 1000 ppm concentration could be one of the recommended pesticide for controlling cabbage aphid.