“…The raw materials commonly used to prepare the substrate are sugar cane bagasse, various grasses (e.g. Brachiaria spp., Cynodon dactylon , Panicum maximum ), cereal straw ( Triticum aestivum , Avena sativa , Oryza sativa ) and manure supplemented with nitrogen sources (soybean, wheat, corn and cotton meal, urea, ammonium sulfate) and sources of phosphorus and calcium . Experiments performed in China showed the possible use of cottonseed hulls, rice hulls, asparagus straw and soybean cake .…”