Problems the Iowa State Auditor’s office identified in a 2012 audit and subsequent reports and recommendations for investigating Iowa’s pesticide use violations still linger years later. The Iowa Legislature has not changed state law on some fees the state Department of Agriculture Land Stewardship Pesticide Bureau charges licensed pesticide distributors and applicators, an IowaWatch review of public records shows. In other instances, applicators do not take continuing education classes in the same year they apply. Explanations exist for some of the concerns. For example, applicators take continuing education after harvest and before the next spring’s planting season during what is called the crop year, which runs Oct.