Soybean Aphid

Ron Hammond, Andy Michel

Aphids on a soybean leaf.

Although we have not yet found aphids on soybeans in Ohio, other states are reporting finding them in fields.  During a regularly scheduled aphid scouting trip in mid-May made by our colleagues from other states, aphids were reported as “abundant near Toledo (Secor Park)” on buckthorn, the aphid’s overwintering host.  What this probably means is that soybean aphids will be present this year in Ohio soybean fields, which would continue the two year cycle.

If you remember from this past winter, we were not sure what might happen in this year, and thus, had not made a prediction.  However, based on what is being seen in other Midwest states, aphids will probably be present. At this time, there is no way to predict how common aphids will be, and whether they will reach economic levels.  We urge growers to plan to scout for aphids later this summer and prepare to take action if economic thresholds are reached.  And most importantly, continue to read this newsletter for further updates as we go through the summer.

Source : osu.edu