The potential is great however. The Institute for Local Self-Reliance estimates that available non-food growing lands, along with agricultural and urban wastes amounting to 300 million tons, could completely replace petrochemical with biochemical production in the US (Morris, 2002). Other researchers have argued that, even leaving half of agricultural residues on the fields for conservation purposes, the remaining residues could supply the US with between 70 and 175 million tons of pulp per year more than is used annually by U.S. industries to produce paper. With manufacturers