How were today' complex approaches to improving crops developed? The quest for a steady food supply sparked plant breeding attempts over 12,000 years ago. The Concise Encyclopedia of Crop Improvement is a comprehensive resource explaining the development of crop improvement methods over the centuries. This extensive history of development is examined in detail, including influential individuals in the field, plant cultivation in Asia since the Neolithic time, techniques used in the Old World, and cropping in ancient America. The advance of scientific plant breeding in the twentieth century is extensively explored, including hybrid breeding, biotechnological improvement, and genetic manipulation.