If you like, dried blood, alfalfa, soybean, or cottonseed meals is often substituted. Nitrogen is introduced immediately from them, so it's best to attend right until spring to include it towards your soil. 10 lbs . of blood food materials the identical volume of nitrogen as 10-20 bushels of manure https://kung-fu49370.theobloggers.com/35430997/soil-acidifier-things-to-know-before-you-buy