Commodities covered under chapter 22.09 RCW in respect to storage and/or merchandising shall include wheat, barley, oats, field corn, popcorn, rye, triticale, grain sorghum, soybeans, sunflowers, flax, buckwheat, canola, rapeseed, safflower, millet, mustard, dry peas, dry beans, lentils, malt, and the by-products resulting from conditioning the above commodities.