Development of a new variety of spring canola for the conditions of Western Siberia

According to the bioclimatic potential and soil conditions, the territory of Western Siberia is suitable for growing spring rapeseed. In 2024–2025, research was conducted to develop the main elements of the varietal technology for growing the new variety of spring rapeseed 00-type Ladny for comprehensive use in the forest-steppe zone of Western Siberia. The vegetation period of the Ladny variety in the forest-steppe zone is 2–4 days shorter than that of the SibNIUK 198 and Sibirskiy varieties, and ranges from 103 to 105 days. The growth of lateral shoots begins from the base of the main shoot, and the lower internodes are shortened, which increases the plants’ resistance to lodging. The elements of the technology were tested in a changing climate in a moderately warm, insufficiently humid agro-climatic region of Western Siberia. The moisture and heat availability indicators varied greatly during the research years, but were generally acceptable for the growth and development of rapeseed plants. The article presents the results of studies on the influence of sowing dates, seeding rates, and methods of sowing spring rapeseed varieties SibNIIM 198, Ladny, and Sibirskiy on yield and its structure elements in the forest-steppe zone of Western Siberia. The influence of technology parameters, meteorological conditions of the growing season, and the characteristics of the variety on seed yield has been revealed. The maximum grain yield of the Ladny variety is achieved when sown in the second and third decades of May (14.1–14.5 centners per hectare) using the row and wide-row sowing methods with a seeding rate of 1.0–1.5 million seeds per hectare. On average, over the two years of research, the seed yield of the Ladny variety exceeds the standard (the SibNIUK 198 and Siberian varieties) by 21 %. The purpose of the research is to develop the basic techniques of varietal cultivation of spring rapeseed in the forest-steppe zone of Western Siberia.