<P> In the late 19th and early 20th century, federal agricultural engineers worked in the Arizona Territory on an experimental farm in Sacaton . It was here that Pima Indians cultivated various cotton hybrids seeking ideal traits . By the early 1900s, the botanist Thomas Henry Kearney (1874--1956) created a long staple cotton which was named Pima after the Indians who grew it . In 1910, it was released into the marketplace . While in 1987, Arizona was producing 66% of the country's Pima cotton, it has dropped to only 2% in recent years . </P> <P> From 1817 when it became a state, to 1860, Mississippi was the largest cotton - producing state in the United States . Cotton is a major crop in Mississippi with approximately 1.1 million acres planted each year . The highest acreage recorded was in 1930 (4.163 million acres); the highest production year was 1937 (2.692 million bales produced over 3.421 million acres); the highest cotton yields were in 2004 (1034 pounds of lint produced per acre). </P> <Table> <Tr> <Td> </Td> <Td> Parts of this article (those related to Information about Missouri cotton farming) need to be updated . Please update this article to reflect recent events or newly available information . (December 2017) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> Parts of this article (those related to Information about Missouri cotton farming) need to be updated . Please update this article to reflect recent events or newly available information . (December 2017) </Td> </Tr>

Where is cotton crop produced mainly state four states