Marenych, M. M.Маренич, Микола МиколайовичKoba, K.Hanhur, V. V.Гангур, Володимир ВасильовичSemenov, A. O.Семенов, Анатолій ОлексійовичLen, O. I.Лень, Олександр ІвановичYeremko, L. S.Єремко, Людмила СергіївнаBahan, A. V.Баган, Алла ВасилівнаYurchenko, S. O.Юрченко, Світлана ОлександрівнаYeleussinov, B.2026-02-272026-02-272026-02-27https://dspace.pdau.edu.ua/handle/123456789/20751Marenych M., Koba K., Hanhur V., Semenov A., Len O., Yeremenko L., Bagan A., Yurchenko S., Yeleussinov B. Effect of fertigation with urea-ammonium nitrate on the seed yield of maize maternal lines. Agriculture (Poľno hospodárstvo). 2024. Vol. 70 (4). P. 218 ‒ 229. DOI:10.2478/agri-2024-0016Fertilisation plays a crucial role in managing corn yields. Research conducted in 2021 − 2023 in the Central Forest-Steppe of ukraine under unstable moisture conditions demonstrated the positive impact of urea-ammonia mixture (uan) on the yield and sowing properties of maize maternal lines seeds across different maturity groups (P6/240, P5/320, P4/440). Applying 80 L/ha of UAN during the V10 (ВВСН 20) phase increased seed yield by 10.6 − 11.9% compared to the control. The highest seed yield was achieved with 120 L/ha of UAN, resulting in increases of 22.5% for P6/240, 21.3% for P5/320, and 16.4% for P4/440. however, increasing the uan dose to 160 l/ha led to a slight decrease in yield for lines P5/320 and P6/240. Statistical analysis confirmed that fertilisers significantly influenced seed yield, accounting for 37% of the yield variance, with the genetic characteristics of the maternal lines contributing 34%. The positive effect of liquid nitrogen fertilisers on the 1,000-seed weight varied from 3.4% to 21.8%, depending on lines genetics and fertiliser dose.enmaize (Zea mays l.)maternal linesfertigationfertiliserapplication rateseed cropsyieldArticle