NCPN Sweetpotato
NCPN Sweetpotato
NCPN Sweetpotato
University of California
NCPN Sweetpotato

About NCPN Sweetpotato

Production of sweetpotato crops starts with clean plant material. Healthy plants are easier to propagate and produce higher yields and better quality sweetpotatoes.

 

Sweetpotato virus diseases commonly reduce yield, depending on cultivar and viruses by as much as 25 to 40%.  They also reduce quality in several ways including by causing russet crack seen here.

 

Chlorotic spots on sweetpotato leaves are caused by a complex of four potyviruses that are common in the U.S.

 

Viruses are eliminated by meristem tip culture.

 

Plants are rigorously tested for viruses using testing standards that are the strictest possible.

 

If a plant is infected with a virus, a bright band appears.

 

Foundation stock is propagated in carefully controlled greenhouses and monitor for diseases.

 

Clean, tested propagation material is provided to certified seed growers, commercial growers and other clean plant centers throughout the United States and world.

The final product – attractive, high-yielding sweetpotatoes.

Russet Crack
Russet Crack

Sweetpotato leaf disease
Sweetpotato leaf disease

Meristem tip culture
Meristem tip culture

Testing for viruses in the lab
Testing for viruses in the lab

 

NCPN LogoThe National Clean Plant Network for Sweetpotato is an association of clean plant centers, scientists, educators, state and federal regulators, certified seed growers, and commercial growers from the fresh market and processing industries concerned with the health of planting stock (seed roots and vine cuttings). The NCPN operates under the auspices of three agencies within the United States Department of Agriculture - Animal and Plant Health Inspection Service (APHIS), Agricultural Research Service (ARS) and National Institute of Food and Agriculture (NIFA).

 

 

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