Blood Meal: Smelly source of nitrogen and phosphorus. Good to use as a mix with cottonseed meal. Expensive, but itís good to use occasionally. Analysis can range from 12-2-1 to 11-0-0. A good nitrogen source but smelly and expensive. This natural meal has a low pH and many trace minerals including iron. Use at 20 pounds per 1,000 square feet or 300-400 pounds per acre. A good blend is made by mixing 80 percent cottonseed meal with 20 percent blood meal. If zeolite is blended in with these two products it helps reduce odor and makes them last a.