With the exception of the last few hot days, these slightly cooler than norm July temps are ideal for soybean aphid development. They can double their populations in a matter of days when temperatures are moderate. There haven’t been many reports of threshold levels being found in the fields so I am a little worried that not everyone is taking…
Tracey Baute July 12, 2013 1722 Comments Off on Soybean Aphid Populations Present and Increasing in Some FieldsReports of fields in Eastern/Central Ontario with threshold levels of soybean aphids have been coming in this week. Chris DiFonzo, MSU has also alerted us to very high numbers showing up in Michigan, especially in the thumb which could migrate here into Ontario via any future storm fronts. It is very important to be out scouting weekly from now until…