HERBICIDES APPLICATION FOR WEED CONTROL IN WINTER BARLEY (Hordeum vulgare L.)

An uncontrolled weed flora can decrease winter barley's grain yield and quality. Winter barley (Hordeum vulgare L.) variety 'Emon' field trial was conducted in the growing seasons 2020/2021 and 2021/2022. The trial was stated in the experimental field of the Agricultural University-Plovdiv, Bulgaria. The experiment aimed to study the efficacy of herbicides for broadleaf weed control in barley. The following herbicides efficacy was evaluated: Sekator OD -0.15 l ha-1; Axial One -1.00 l ha-1; Biathlon 4 D -55 g ha-1; Granstar 75 DF -15 g ha-1; Aminopielik 600 SL -2.00 l ha-1. The herbicides were applied in spring at the phenophase end of tillering -the beginning of spindling of the crop (BBCH 29- 31). The herbicide efficacy was recorded by the 10-score visual scale of EWRS (European Weed Research Society). At the particular infestation with Sinapis arvensis L., Anthemis arvensis L., Galium aparine L., Consolida regalis Gray., and Viola arvensis L. the highest overall efficacy and highest yield were recorded when Biathlon 4 D -55 g ha-1 was applied.