Abstract

The major aspects of seed potato quality control in Russia are considered in the article. The new standard ‘Seed potato specifications and methods for determining the quality’ was developed by the Lorch Potato Research Institute and widely discussed in public during 2016-2017, and approved in 2018 by Interstate Council for Standardization, Meteorology and Certification. The new standard sets out a common terminology and minimum requirements for early generation seed production (original seed), further multiplication (elite seeds) and for end-use ware potato production (reproductive seed). It covers varietal identity and purity, diseases and pests, external tuber quality, sizing and labeling. In accordance with the Standard, all seed potato must be evaluated during crop growth (field surveys) and during post-harvest control (tuber analysis). Results of the field and post-harvest control are normally be based on a visual assessment of the crop. The identification of faults may be supported by appropriate laboratory tests and comparative trials of seed potato samples when required. In 2018-2019 crop season, comparative field trials of original seed potato samples were carried out for detailed check of compliance with the normative tolerances of the standard requirements related to varietal identity and purity and, the level of viral and bacterial diseases transmitted through seed material. At the Lorch Potato Research Institute, 202 samples of original seed potatoes were evaluated to determine their varietal identity, the presence or absence of other variates and plants affected by diseases. Unification and harmonization of the Russian system of seed potato quality control with international - reference quality UNECE standard for seed potato are essential for the development of potato seed production in Russia.