Together with PSU's David Mortensen and BYU's Roger Koide our lab has been investigating the unintended or "indirect" effects of treating crop seeds with pesticides. This recent publication outlines how pretreating corn and soy seeds with insecticide and fungicides, may actually have an important impact on the weeds in the seedbank.
Evidence for indirect effects of pesticide seed treatments on weed seed banks in maize and soybean. Smith, R.G., L.W. Atwood, M.B. Morris, D.A. Mortensen, & R.T. Koide (2016). Agriculture, Ecosystems and Environment 216 (2016): 269-273.