Cool, wet conditions may foster soybean aphid outbreaks in 2010, according to Pioneer experts. Because it's difficult to predict when and where soybean aphids will pose a problem, it's best to scout early and often, especially if the pests show up in nearby counties.
"Last year we saw high aphid infestations in late-planted regions and also where the growing season turned relatively cool," said Paula Davis, Pioneer senior manager for insect and disease traits. "The buildup time for aphid populations typically is late June through July, but last year it occurred later, from July into September in some places. Illinois especially got hit with later flights of aphids."