THOMAS S. ENGLAND / SCIENCE PHOTO LIBRARY THOMAS S. ENGLAND / SCIENCE PHOTO LIBRARY
Fall corn harvest on a farm near Champaign, IL. Small-grain harvesting has been mechanized for hundreds of years, the first harvester gaining general acceptance in 1831. Such farm machinery has helped in times of labor shortages, while the quality of the crops developed for mechanical harvesting are of concern to consumer groups.
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