266.38  Soil test interpretation.
  The Iowa cooperative extension service in agriculture and home economics shall develop and publish material on the interpretation of the results of soil tests. The material shall also feature the danger to groundwater quality from the overuse of fertilizers and pesticides. The material shall be available from the service at cost and any person providing soil tests for agricultural or horticultural purposes shall provide the material to the customer with the soil test results.
87 Acts, ch 225, §229