The agricultural areas of the United States differ dramatically in topography, soils and climate. Because of these differences, the United States produces a wide variety of crops, each suited to its own locale.
Wheat is a typical example.
Wheat is grown in most of the 50 states of the United States. The kind of wheat grown and the quantity vary widely from one region to another. Thus, an importer or domestic miller can be readily assured of obtaining the type of wheat they need by selecting the proper class. Plant breeding lies at the heart of assuring continued improvements in the production and quality of U.S. wheat. Wheat improvement work had its formal beginning in 1897 when the U.S. Department of Agriculture set up an active program of wheat research and development.