Source: Ohio State University Extension

A few weeks ago, Ohio State University Extension researchers reported finding large numbers of soybean aphids on late-season soybeans. Now, large numbers of soybean aphids are being found on buckthorn, which is their over-wintering host.

According to Ohio State University Extension, "These large numbers of aphids suggest the potential of a large over-wintering population. Being that this summer has been considered a "soybean aphid year" in much of the eastern Corn Belt, we would normally expect that next year would be an off-aphid year. However, significant over-wintering could mean soybean aphid problems next year and perhaps an end to the two-year aphid cycle that we have been in since the aphid's arrival."

Original press release