Special aspect of usage of elements of forced seed production of healthy potato in forest-steppe of Priobye

The results of those carried out in 2022–2023 are presented. complex experiments to study the effectiveness of using elements of accelerated virus-free seed production technology on potato varieties of different ripeness groups on gray forest medium-loamy soil of the forest-steppe of the Novosibirsk Ob region. The soil at the research site contained 3.48 % humus, 11.3 mg of easily hydrolyzed nitrogen, 13.1 mg of available phosphorus, and 15.1 mg/100 g of exchangeable potassium at pH 6.19. The agricultural technology in the experiments was generally accepted for modern agricultural technology research. On the gray forest medium-loamy soil of JSC Agricultural Enterprise “Michurinets” of the Novosibirsk district of the Novosibirsk region in the conditions of isolated areas of open ground when planting healthy super-super elite of three varieties of different ripeness groups: Rosara, Red Scarlett (early) and Zlatka (mid-ripening) the formation of standard virus-free planting material is shown super elites. The gross harvest of the virus-free superelite is equal to the Rosara variety – 40 tons, Red Scarlett – 4.86 tons, and the Zlatka variety – 33.72 tons, with the yield of the standard seed fraction of 35–60 mm at the level of 70 %. Under the conditions of a specialized greenhouse, the maximum average number of tubers per vessel was noted in the variant with the Sokur variety – 14.9 pcs. and Red Scarlett – 11 pcs. In protected soil, the standard fraction of seed healthy tubers 35–60 mm dominated, ranging from 18 t/ha for the Zlatka variety to 21 t/ha for the Rozara variety. In a specialized greenhouse, the share of seed tubers was mostly in the 35–45 mm and 45–55 mm fractions – an average of 26 %. Improved technology for seed production of virus-free potatoes ensured the formation of healthy elite material in the Zlatka variety – 193.26 tons, Rosara 111.63 tons and Red Scarlett – 28.42 %. The yield of the seed fraction 35–60 mm reached 72 %.