I do my best to use organic fertilzer on everything that I grow, and am almost at 100% organic. As of now, I'd say 90% of all I grow is organic, with my wheat and oats being the only two crops that I grow that still get chemical fertilizer, but I hope to change this very soon. The only reason to this is due to the high nitrogen needs of those plants along with the large size of the areas that I grow them in.