What is Iowa State University doing to address this northern corn rootworm “situation” in soybeans?
We may sample soil from some of these high population soybean fields this winter and look for corn rootworm eggs, but this procedure is labor intensive, costly, and rootworm eggs can be very easy to miss unless a large number of samples are collected. We would be interested in knowing where continuous soybeans (2 or 3 years) will be planted to corn in 2006. In these fields, we could place emergence cages to trap adults and confirm, or deny, that northern corn rootworms were laying eggs in the soybeans. Then, we would have an answer to the question that has many of us bugged.
