A warranty of any kind, either expressed or implied, including a warranty of merchantability, fitness for a particular purpose, varietal identity, or absence of disease, is not made by the seed commission, the seed department, the seed commissioner, or certified or noncertified seed producers as to the quantity or quality of the crop produced from the seeds or as to other produce, which is inspected and certified, except as provided in this section. The sole warranty made is that the seeds 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.