In areas where irrigation is necessary or desired, a producer shall include in the application for a certification permit and the farm plan an analysis of water quality and soil salinization. A producer who irrigates and who is suspected by the Department to have a water-quality or soil-salinization problem shall: Retest for water quality or soil salinization, as required by the Department; and Submit tissue-test results for at least one edible crop produced each year until a residue from water contaminated with a substance prohibited by this subtitle is not found in the crop, and at least every third year after that.