APPLICATION OF FOLIAR HERBICIDES TO CONTROL BROADLEAF WEEDS IN RYE (Secale cereale L.)

Rye (Secale cereale L.) is an important crop used for food, animal feed and bioenergy. Weeds are one of the main factorslimiting the growth and development of the crop. The aim of the present study was to determine the efficacy of foliarherbicides against broadleaf weeds and the treatments' influence on growth and reproductive performance of rye,"Millennium" cultivar. During the period 2021/2022 and 2022/2023, a field experiment with rye was carried out on theexperimental field of the Agricultural University of Plovdiv, Bulgaria. The herbicidal products Sekator OD - 0.15 l ha(-1), Axial One - 1.00 l ha(-1), Biathlon 4D - 55 g ha(-1), Granstar 75 DF - 15 g ha(-1), and Aminopielik 600 SL - 2.00 l ha(-1) appliedin tillering stage of rye (BBCH 29) were evaluated. The efficacy of the studied products by the 10-score visual scale of EWRS was reported. The application of Biathlon 4D - 55 g ha(-1) provides the best control against Papaver rhoeas L.,Descurainia sophia L., Consolida orientalis J. Gay, Capsella bursa-pastoris L., Lamium purpureum L. and Fumariaofficinalis L. At the same treatment rye yields as well as accompanying biometric indicators were the highest