INFLUENCE OF SOWING DATES ON PRODUCTIVITY AND ADAPTIVE POTENTIAL OF WINTER SOFT WHEAT VARIETIES IN THE ROSTOV REGION
2025
Chernousov, E.V. | Fomenko, M.A. | Ljashkov, I.V.
The research was carried out in order to study the features of grain harvest formation and the adaptability parameters of winter soft wheat depending on the timing of sowing in the soil and climatic conditions of the north-western zone of the Rostov region. The work was carried out on the mid-range southern carbonate chernozem in 2021-2024. The material for the study was winter wheat varieties of breeding FRARC. The scheme of the experiment included five sowing dates: August 25, September 5, September 15, September 25, and October 5. On average, over the years of research, the most favorable regime for the development of winter wheat plants was formed during sowing on September 5...15, when the sum of effective temperatures was at the level of 673...892 °C. The pace of autumn development was the most significant during sowing in the period from August 25 to September 15. According to the complex of adaptivity parameters, the varieties Constanta 22, Volnaya Zarya, Donskaya T20 and Kalitva were distinguished, possessing plasticity, breeding value, homeostaticity, stress resistance and high grain productivity.
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