Buckwheat is one of the most promising crops at the present stage. The purpose of the study is to monitor the harmfulness of the weed field component of buckwheat agrocenosis in the forest-steppe of the Chechen Republic. Objectives of the study: assessing the influence of predecessors on the level of weediness in the buckwheat agrocenosis; assessment of the influence of plant density per unit area on buckwheat yield in the forest-steppe of the Chechen Republic. The research period is 2022-2023. Buckwheat crops during the research period are characterized by a mixed type of weediness. During the survey, 25 species of weeds were discovered. Number 3-960 pcs/m2. Late spring (40.75%) and root shoot weeds (16.56%) prevailed. The weight of one weed plant specimen is inversely proportional to their number in the crop. The yield of buckwheat crops free of weeds is 2.50 t/ha. As the density of growth of the weed field component per unit area increased, the yield loss amounted to 1.15 t/ha or 46.0% compared to the control. With an increase in the number of weeds per unit area, the yield of buckwheat decreased by 1.8 times and amounted to 1.35 t/ha, which proved a decrease in the level of farming culture and the productivity of arable land in general. The results obtained are necessary when developing environmentally sound measures to combat weeds, improve scientifically based measures to combat them in the buckwheat agrocenosis, and increase the profitability of grain production. The buckwheat agrocenosis in the forest-steppe of the Chechen Republic is characterized by a mixed type of weediness. With an increase in the density of weed plants per unit area of sowing buckwheat variety Barynya, the mass of 1 weed plant decreases. Crop losses reach about 46%. The biological potential of buckwheat is the basis of the ecologized technology of its cultivation.