Herbicides as a factor of reducing weed vegetation and increasing the productivity of winter wheat crops

The purpose of research is to study the effect of various herbicides and their tank mixtures on weed infestation, productivity and grain quality of winter wheat. Tasks: to study the effect of herbicides on weed infestation of winter wheat crops; to identify the effect of herbicides on the yield of winter wheat; to give an economic assessment of the use of herbicides and their tank mixtures on winter wheat crops. In the experiments, released varieties of winter wheat Grom and Tanya of FSBSI National Grain Center named afterLukyanenko were sown. Of the herbicides Grench, Fokstrot, VE, and their tank mixture Grench + Fokstrot, VE were studied. Laying experiments, phenological observations, statistical processing of the data obtained were carried out by generally accepted methods. The repetition of the experiment is three times, with a randomized placement of options in the experiments, with a total plot area of 130 m2, with a registration area of 80 m2. The length of the plot is 13 m, and the width is 10 m, the protective strips on the sides are 0.5 m, and the end strips are 2 m. The smallest number of weeds was observed in the variant with the use of the herbicide Grench (21.9 pcs/m2), where the percentage of death was 72.7 %, and the tank mixture (Grench (5 g/ha) + Fokstrot, VE (0.4 l/ha)) (20.3 pieces/m2) - 74.3 %. The highest grain yield for the winter wheat variety Grom with the use of the herbicide Grench at a dose of 10 g/ha was 4.54 t/ha, and for the winter wheat variety Tanya - 4.59 t/ha, where the highest indicators were obtained in terms of protein content and gluten. Herbicide Grench at a dose of 10 g/ha showed the highest payback rate, where the profit amounted to 27.82 thousand rubles for the Grom variety and 28.27 thousand rubles for the Tanya variety. Profitability for both varieties was 158.2-160.4 %.