In 2013, we found soybean aphids in many fields in northern OH. Although the aphids arrived later than usual—anywhere from R4-R6 stage—populations did reach economic threshold in later planted beans. What should we expect in 2014? Soybean aphid populations in OH should be relatively low for a couple of reasons. One, for the past 14 years, aphid populations have peaked every other year such that we have had high populations in odd numbered years (this pattern may not hold for all of the Midwest, but it has stuck for OH). Two, very minimal soybean aphids were found on buckthorn (the aphid’s overwintering host) based on a multi-state survey by Dr. Dave Voegtlin (retired entomologist from the Illinois Natural History Survey) and Dr. Dave Hogg (University of Wisconsin entomologist). Their observations agreed with the lack of aphids found during our own surveys of buckthorn across OH, funded by the Ohio Soybean Council. Of course, a lot can happen between now and late July-early August when soybean aphids would appear, and we will keep you updated if aphids do arrive.
Should You Expect Soybean Aphids This Year?
Crop Observation and Recommendation Network
C.O.R.N. Newsletter is a summary of crop observations, related information, and appropriate recommendations for Ohio crop producers and industry. C.O.R.N. Newsletter is produced by the Ohio State University Extension Agronomy Team, state specialists at The Ohio State University and the Ohio Agricultural Research and Development Center (OARDC). C.O.R.N. Newsletter questions are directed to Extension and OARDC state specialists and associates at Ohio State.