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Sweetpotato Production in Mississippi

Sweet potato bloomMississippi sweetpotato growers plant more than 20,000 acres of sweetpotatoes each year.  The state consistently ranks second in the United States in sweetpotato acreage and third in production.  In 2012, sweetpotatoes were grown on approximately 22,500 acres, producing 394 million pounds of Sweetpotatoes with an estimated value of $79 million. 

Sweetpotato production is highly labor intensive.  Each spring a portion of the sweetpotato roots produced in the previous year are placed into plant production beds and covered with 2 to 3” of soil.  These sweetpotato “seed” produce vegetative shoots. 

After several weeks, and when the shoots reach 8 to 10” in length, these shoots are cut (by hand or mechanically).  The shoots that are cut from the plant beds are called “slips”.  Slips are then mechanically transplanted into ridged planting beds 8 to 10” high and 36 to 48” apart in sweetpotato production fields. 

Sweet potatoesThree to four months later sweetpotatoes can be harvested.  Following harvest, sweetpotatoes must be cured to set the skin, heal any wounds or abrasions that occurred during harvest, and increase the quality of the Sweetpotato flavor.  Curing is accomplished by exposing newly harvested sweetpotato roots to temperatures of 80 to 85°F with 85 to 90% humidity (typically for 6 to 8 days).  Following curing, sweetpotatoes are stored at 55 to 60°F with approximately 85 to 90 percent humidity for up to 12 months.

At Mississippi State University, researchers and extension personnel from multiple departments collaborate to improve all facets of sweetpotato production.  Current research efforts include the areas of crop production, pest management (weeds, diseases, nematodes, and insects), plant physiology, food science, and agricultural and biological engineering.

Production

Pest Management

Other Sweetpotato Information