KUBRAK, T. M.; MELNYK, A. V. THE ROLE OF FERTILIZERS AND PLANT GROWTH REGULATORS UNDER MODERN GROWING TECHNOLOGY OF SPRING BARLEY IN THE CONDITIONS OF THE LEFT BANK FOREST-STEPPE OF UKRAINE. Bulletin of Sumy National Agrarian University. The series: Agronomy and Biology, v. 53, n. 3, p. 31-42, 27 Dec. 2023.