The term "to use any registered pesticide in a manner inconsistent with its labeling" means to use any registered pesticide in a manner not permitted by the labeling, except that the term shall not include:

(1) Applying a pesticide at any dosage, concentration or frequency less than that specified on the labeling unless the labeling specifically prohibits deviation from the specified dosage, concentration or frequency;

(2) Applying a pesticide against any target pest not specified on the labeling if the application is to the crop, animal or site specified on the labeling, unless the department or EPA has required that the labeling specifically state that the pesticide may be used only for the pests specified on the labeling;

(3) Employing any method of application not prohibited by the labeling unless the labeling specifically states that the product may only be applied only by the methods specified on the labeling, (chemigation applications are prohibited unless the label has chemigation use directions); and

(4) Mixing a pesticide or pesticides with a fertilizer when such mixture is not prohibited by the labeling.