Abstract
The article presents the study results on a comprehensive assessment of varieties from the Velikiye Luki State Agricultural Academy collection in the conditions of the Nonblack Earth Region of Russia. The data were obtained for the Pskov and Tver regions. The varieties of the collection belong to different ripeness groups and were obtained by different selective breeding organizations. The adaptive potential of potato varieties of
 different ripeness groups under annually changing weather conditions has been estimated. In the course of research, varieties with high plasticity and productivity were identified. All varieties are characterized by high yield and resistance to diseases.
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