INFLUENCE OF HERBICIDES IN WINTER WHEAT CROP AT AGRICULTURAL RESEARCH AND DEVELOPMENT STATION TURDA

The paper presents the results obtained in the winter wheat crop during 2023-2024, on the Andrada variety, created at Agricultural Research and Development Station Turda, with a high yield potential and good qualitative traits. Herbicide treatments with either a single product or two were applied depending on the infestation level, spectrum, and dominance of weeds, using Broadway Star (70.8 g/kg pyroxulam, 14.2 g/kg florasulam, 70.8 g/kg cloquintocet-mexyl), Provalia (fluroxypyr 135 g/l + thifensulfuron methyl 30 g/l + metsulfuron methyl 5 g/l), Dicopur D (600 g/l 2,4-D acid from dimethylamine salt), and Sekator Progress OD (amidosulfuron 100 g/l + iodosulfuron-methyl-Na 25 g/l + mefenpyr diethyl 250 g/l), applied post-emergence in the early stem elongation phase (BBCH 30-32). The treatments with the best results in controlling monocot and dicot annual and perennial weeds, with the highest efficacy of over 95%, were at variant V5, where a single herbicide, Provalia, was used, and at variant V4, with two herbicides, Provalia + Broadway Star, to which foliar fertilizer AGRO-K and adjuvant Vital were added, resulting in the highest yield increases, over 1400 kg • ha-1, with results presenting very significant positive statistical differences compared to the control. The use of herbicide treatments, correlated with the level of infestation, spectrum, and dominance of weeds, timing of application, technical efficacy potential, and local climatic conditions, represents an important method for eliminating competition between weeds and the crop.