The soybean aphid, Aphis glycines, was recently discovered in Wisconsin and was quickly reported in several other northern tier states. With the United States the world's leading producer of soybeans and with farmers from over 30 states producing the crop, concern over this pest continues to be strong. The soybean aphid is thought to have originated in China where it is a common pest. It has also been described from the Philippines, Japan, Indonesia, Thailand, Korea, Malaysia, Vietnam, North Borneo, and Russia. In addition to the US, the aphid has also recently been described in Canada and Australia. One to two applications are required in China to control the soybean aphid and it costs the Chinese farmer approximately US$3.43 million annually to control the pest on over 1,700,000 ha. Globally, Dow AgroSciences is committed to the soybean market and has insecticide registrations in soybeans in numerous Asian countries where the soybean aphid currently occurs. In addition to chlorpyrifos, the active ingredient in Lorsban, Dow AgroSciences also sells Nurelle, (a mixture of chlorpyrifos and cypermethrin) and Reldan (chlorpyrifos-methyl) outside the US for use in soybeans. Summary data of performance shows that Lorsban, along with Nurelle and Reldan, is highly effective in control of the soybean aphid. Lorsban is also recognized for its short depressive effects to beneficials. In addition, Lorsban is also registered for spider mite control and will not cause a secondary flare-up of this pest.
Species 1: Homoptera Aphididae Aphis glycines (soybean aphid)
Keywords: chlorpyrifos, China
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