Whether or not it is the largest, or the last—both claims have been made—a vast untapped source of food, energy, and raw materials lies in the billions of tonnes of plant waste produced world-wide each year. Cereal straw accounts for a significant proportion of this and is attracting increasing attention as an animal feedingstuff and chemical feedstock. Its fibre also has many uses—in construction, insulation, packaging, and papermaking; its potential extends even to textile manufacture.
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