ABSTRACT
Large quantities of organic wastes are produced from agricultural production and farming systems, including animal manures, sewage biosolids, food and restaurant wastes, and industrial organic wastes. These have the potential of increasing global soil and water pollution, because they are currently disposed of by land-spreading, incineration, or into land¤lls. As much as 50%–60% of the total wastes that are disposed into land¤lls are organic wastes. If these were turned into materials useful in agriculture and horticulture, there would be great savings in primary plant nutrients and metabolic energy.
