Among vegetable crops of the United States, sweet potatoes rank second in value only to white potatoes. In 1939, a total of 862,000 acres was harvested, producing 72,679,000 bushels with a farm value of $54,413,000. In most southern states, sweet potatoes have a position in the diet similar to that of white potatoes in the North and East.
In recent years, carlot shipments of southern-grown sweet potatoes from Louisiana to northern markets have increased because of improvements in storage and other facilities, providing a more even distribution throughout the year.
Erwin, A. T.; Shepherd, Geoffrey; and Minges, P. A.
"Handling and marketing Iowa sweet potatoes,"
Bulletin P: Vol. 2
, Article 1.
Available at: http://lib.dr.iastate.edu/bulletinp/vol2/iss32/1