Its that time of year again to start monitor soybean aphid levels. On July 9th we found some early colonization in the upper leaves of late May planted soybeans. Levels were very low and do NOT require an insecticide application. Unnecessary early applications of insecticide not only cost money, they can lead to many negative side effects including the need for more applications once aphids recolonize treated fields.
For more info on soybean aphid: http://wiki.bugwood.org/NPIPM:Soybean_aphid