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Successful potato production is to a large extent dependent on the quality of the planting material. Due to the susceptibility of the potato to several transmissible diseases, it is not possible to multiply the same seed source for an indefinite period of time.  The South African potato industry has a sophisticated seed potato industry which plays a vital role in the growth of the ware potato and processing industries.

Stringent requirements are set in respect of the production of seed potatoes and certification officials of Potato Certification Service ensure, by means of field and tuber inspections, that requirements are met.

Laboratory tests are conducted on seed tubers with regard to certain bacterial diseases and viruses before certification is awarded.  The process of certification is monitored by a sophisticated data management system.  Approximately 10 000 hectares are registered annually for seed production.  Only laboratories registered with the Department of Agriculture, Forestry and Fisheries and accredited by the Independent Certification Council for Seed Potatoes are allowed to conduct laboratory tests on seed tubers.
Potatoes South Africa| Potato Laboratory Services| Prokon