Aug 20, 2012

We just can’t seem to get away from soybean aphids.  Over the weekend, their numbers have increased more than I would have expected.  They are still on near treatment levels, but now I have to wonder if thinking that the season was over were a bit premature.  Based on our weather, and how rapidly these bugs can reproduce, there may be some late season spraying.

 

The early beans are starting to turn in some areas.  These fields are no longer in danger of aphid infestations but the later maturity beans, especially now that we have a weather delay in reaching maturity.  I will pass along anything that I see otherwise.

Another interesting note; of all the beans I have been in watching aphids, there is quite a difference in their weed control.  I’ve seen fields that were under a total glyphosate program, others that had authority/sonic and others with verdict.  It is not surprise that the fields that were only treated with glyphosate had the toughest time with weeds this year and all of the pre emerge herbicides worked well.  However, I think I can say that I seen a distinct difference between the sonic/authority fields vs. the verdict fields.  Both programs worked very well but the verdict fields did seem to be in better shape late in the season. This may be something worth keeping an eye on.