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Information × Registration Number 0226U000933, (0124U001080) , R & D reports Title Establishing of patterns of yield formation and seed quality of sugar beets under the direct method (no-planting) cultivation in conditions of climate change in the Forest-steppe zone of Ukraine popup.stage_title Встановлення закономірностей формування врожаю та якості насіння буряків цукрових за вирощування direct method (безвисадковим) способом в умовах зміни клімату в зоні Лісостепу України Head Karpuk Lesia M., Доктор сільськогосподарських наук Registration Date 19-01-2026 Organization Bila Tserkva National Agrarian University popup.description1 Identification of features of crop formation and seed quality of sugar beet grown by the direct method (no-planting) in conditions of climate change in the forest-steppe zone of Ukraine popup.description2 During 2021–2023, under the soil and climatic conditions of the Right-Bank Forest-Steppe of Ukraine, the effects of sowing dates and plant density on the formation of biometric parameters, cold tolerance, and overwintering survival of direct-seeded sugar beet seed plants were investigated. A close relationship was established between the degree of autumn development of mother roots, their physiological status prior to winter dormancy, and plant viability during the spring–summer period. The study demonstrated that early sowing (the third ten-day period of August) ensured the formation of well-developed mother roots with optimal morphological characteristics (root weight 7–30 g, crown diameter 0.5–2.5 cm, 10–12 fully developed leaves), as well as an increased content of dry matter and sugars, which promoted effective hardening and enhanced resistance to low winter temperatures. In seasons characterized by less favorable overwintering conditions, plant survival under the early sowing date was higher than under later sowing (the first ten-day period of September). In years with milder autumn–winter conditions, overall plant survival was higher regardless of the treatment; however, the advantage of early sowing remained consistent across years. Field emergence and final stand density were strongly influenced by seeding rate and autumn weather conditions. Under optimal plant density, natural self-thinning occurred, resulting in 20–25 plants per meter of row before winter and 12–14 plants after overwintering, which met the biological requirements of sugar beet under the direct-seeding method. Excessive plant density, particularly when combined with later sowing dates, led to the formation of weakly developed plants with reduced reserves of assimilates in the roots, thereby decreasing winter hardiness and overall survival. Product Description popup.authors Olena O. Petrakova popup.nrat_date 2026-01-19 Close