EVALUATION OF THE YIELD OF POTATO VARIETIES UNDER THE CONDITIONS OF THE NORTHERN FOREST-STEPPEOF THE TYUMEN REGION
He aim of the research was to study the features of the formation of the yield of potato varieties during cultivation in the conditions of the northern forest-steppe of the Tyumen region. Field experiments were carried out on the experimental field of the Agrotechnological Institute of the State Agrarian University of the Northern Trans-Urals. The weather conditions during the years of the study were characterized by hot and dry summers. In terms of the number of plants, almost all the studied varieties surpassed the standard variety Karatop by 0.2-0.7 pieces, with the exception of the Bellarosa variety - 5.5 pieces, which is 0.60 pieces lower than the standard variety. The maximum number of tubers from one bush was noted in Vzryvnoy and Colette varieties -17.0-16.9 pcs. The weight of tubers from 1 bush varied by variety from 1183.5 to 1610.0 g. In the experiment, all the studied varietiesexceeded the standard variety Karatop by 34.10-426.50 g. the following varieties: Colette, Explosive, Ivan da Marya, which amounted to 47.5 respectively; 45.7; 45.2 t/ha. These varieties can be recommended for cultivation in the conditions of the northern forest-steppe of the Tyumen region with the highest yield potential in relation to the changing climate.