Iowa Code § 177A.5
The state entomologist shall keep informed as to known species and varieties of insect pests and diseases, the origin, locality, nature and appearance thereof, the manner in which they are disseminated, and approved methods of treatment and eradication. In the rules made pursuant to this chapter the state entomologist shall list the dangerously injurious insect pests and diseases which the entomologist shall find should be prevented from being introduced into, or disseminated within, this state in order to safeguard the plants and plant products likely to become infested or infected with such insect pests and diseases. Every such insect pest and disease listed, and every plant product infested or infected therewith, is hereby declared to be a public nuisance. Every person who has knowledge of the presence in or upon any place of any insect pest or disease so listed, shall immediately report the fact and location to the state entomologist, or the assistant state entomologist, giving such detailed information relative thereto as the person may have. Every person who deals in or engages in the sale of plants and plant products shall furnish to the state entomologist or the entomologist's inspectors, when requested, a statement of the names and addresses of the persons from whom and the localities where the person purchased or obtained such plants and plant products.
Iowa Code § 177A.5
Referred to in §177A.19
Nuisances in general, chapter 657