PARAMETERS OF VARIETIES OF SUDAN SORGHUM (SUDAN GRASS) WHEN GROWN FOR SEEDS

Abstract

When expanding the sown areas under Sudan grass, it is important to ensure the production of a sufficient number of seeds of this crop and the selection of varieties not only with economic and valuable fodder characteristics, but also with sustainable ecological characteristics that would contribute to the increase of the crop area, increase resistance to adverse vegetation conditions and other characteristics. The State Register of Plant Varieties Suitable for Distribution in Ukraine for 2025, presented in the Information and Reference System Sort of the Ukrainian Institute of Plant Varieties Examination, was processed. All varieties of Sudanese grass were analyzed by the duration of the growing season when harvesting for seeds, the resistance of varieties to cold, drought, diseases and pests; seed yield. Correlations between the studied factors were calculated. The conducted studies have established that the highest seed yield among Sudanese grass varieties is noted by: Suzi – 3,9 t/ha, Kovalivska – 3,0 t/ha and Dniprovska 54 – 2,84 t/ha. The lowest seed yield is noted by the varieties Bilyavka – 1,4 t/ha and Murashka – 1,5 t/ha. The Suzi variety was the most resistant to pests. The varieties most resistant to diseases were: Suzi, Bilyavka, Strategy. The varieties with increased drought resistance were: Suzi, Kovalivska, Dniprovska 54, Murashka, Bilyavka and Strategy. The varieties with the most cold resistance were: Kovalivska, Dniprovska 54, Murashka, Bilyavka, Strategy, Altura. The varieties with the most resistance to lodging were: Suzi, Kovalivska, Dniprovska 54, Murashka, Bilyavka. It was found that the high yield of the seeds of the Suzy variety is ensured by the highest drought resistance, resistance to diseases, pests and lodging. The high yield of the seeds of the Kovalivska and Dniprovska 54 varieties is ensured by the highest cold resistance, drought resistance and lodging resistance.