United States: arable crop output 1866-1988

From the Civil War until the 1980s, output of major arable crops in the United States' agricultural sector increased significantly, particularly after the Second World War. Maize production was consistently the highest of the given crops, and was followed by wheat and oats in most years. There was a noticeable dip in the production of most crops in the 1930s due to the Great Depression, while the large drop in Maize production in 1983 was due to the 1983-1985 North American drought. Output trends generally correlate with the amount of land used for each crop, however improved efficiency from the mid-1900s meant that less land was required to yield higher results.