A potato crop is only as good as the seed. When purchasing seed, ensure the supplier has a reputation of
delivering a quality product. Also, check that the growing area has a history of producing quality seed. A
visit to prospective seed suppliers both during the growing season and once the crop is in storage will assist
to ensure quality. Before buying any seed for re-certification, the grower should be satisfied that the seed is
going to have a good chance of passing the certification inspections. It is generally fruitless to plant a seed
lot having even a low incidence of disease with the expectation that the diseased plants can be removed
through roguing. Check the results of field and storage inspections and insist on Post Harvest test results
before agreeing to purchase seed. See section on Post Harvest Testing for more information. When
negotiating purchase of a seed lot, determine the method of delivery, date of delivery, desired tuber size
distribution, tuber temperature and degree of sprout development.