A warranty of any kind, either expressed or implied, including a warranty of merchantability, fitness for a particular purpose, absence of disease, varietal identity, or selection identity, is not made by the seed commission, the seed department, the seed commissioner, or any certified seed potato producer, as to the quantity or quality of the crop produced from the seed potatoes that were inspected and certified. The sole warranty is that the potatoes were inspected under the rules of the seed department or the United States department of agriculture. The seed commissioner functions and serves only in an official regulatory manner.