Rapeseed (Brassica napus L.) plays a key role in the global economy as a major source of vegetable oil used for food, feed, and biofuel production. Beyond its industrial importance, rapeseed remains a highly profitable crop. However, achieving optimal yields requires careful crop management, as rapeseed is highly sensitive to weed competition. The present study aimed to evaluate the efficacy of weed control in rapeseed cultivation using the pre-emergent herbicide Successor Pro (petoxamide 600 g/L) and the post-emergent herbicides Effigo S (240 g/L clopyralid + 80 g/L picloram + 40 g/L aminopyralid), Korvetto (5 g/L halauxifen-methyl + 120 g/L clopyralid), and Panarex 40 EC (40 g/L quizalofop-p-tefuril + 75% ethametsulfuron-methyl), applied individually or in combination across nine experimental variants. The influence of weed control on yield performance was also assessed. The experiments were conducted during the 2023/2024 and 2024/2025 agricultural seasons at the M.S.I. Agricultural Holding, located in Diosig, Bihor County. The initial weed infestation level in the rapeseed plots was substantial—163 weed plants/m², representing 11 different species. In all four single-treatment variants, weed control efficiency was relatively modest: V1 – Successor Pro (62.8%), V2 – Effigo S (45.3%), V3 – Korvetto (50.8%), and V4 – Panarex 40 EC (32.7%). The most effective combinations were: V7 – Successor Pro + Panarex 40 EC (93.5%), V8 – Effigo S + Panarex 40 EC (90.4%), and V9 – Korvetto + Panarex 40 EC (98.2%). All active substances contained in the tested herbicides were selective for the rapeseed crop (hybrid LID Invicto). Herbicide efficacy significantly influenced yield outcomes, with the highest seed yields recorded in variants V8 (3527 kg/ha), V7 (3618 kg/ha), and V9 (3845 kg/ha).

Rapeseed (Brassica napus L.), weeds control, herbicides

agronomy

Presentation: poster