Farmers who haven’t started to scout their soybeans for aphids may want to consider taking their smartphone on a field trip soon.As of the third week of June, Aphid Advisor is recommending farmers spray for soybean aphids at some specific sites. Launched for Blackberry users one year ago, the app is still only a pilot decision-making tool but these latest results suggest it may be gaining in popularity among farmers and researchers in select regions.Developed by a team directed by the University of Guelph’s Dr. Rebecca Hallett, the app combines observed pest and enemy population counts with expected population growth rates, and predicts whether natural enemies will control a growing aphid population or not. If not, a warning to spray is generated and can be immediately uploaded to the site so other growers can monitor local trends in real time.