The Technical Feasibility of a Billion-Ton Annual Supply
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all forestland areas not currently accessible by roads were excluded;
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all environmentally sensitive areas were excluded;
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equipment recovery limitations were considered; and
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recoverable biomass was allocated into two utilization groups – conventional forest products and biomass for bioenergy and biobased products.
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yields of corn, wheat, and other small grains were increased by 50 percent;
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the residue-to-grain ratio for soybeans was increased to 2:1;
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harvest technology was capable of recovering 75 percent of annual crop residues (when removal is sustainable);
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all cropland was managed with no-till methods;
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55 million acres of cropland, idle cropland, and cropland pasture were dedicated to the production of perennial bioenergy crops;
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all manure in excess of that which can applied on-farm for soil improvement under anticipated EPA restrictions was used for biofuel; and
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all other available residues were utilized.