The paper reflected the results of investigating the spectral features of winter wheat plants of various varieties, which was a component of the implementation of conventional remote monitoring technologies in precision agricultural production. It was based on empirical data for determining the characteristic spectral characteristics of different varieties and evaluating them using remote sensing data (RS). The purpose of the study was to establish the possibility of identifying varietal differences of winter wheat based on the spectral characteristics of plants obtained from open sources of satellite monitoring data. For this purpose, open data from the Sentinel-2 satellite was used, which provided relatively high spatial and spectral resolution. The analysis covered key wheat growing periods, and spectral differences were investigated using the RGB additive colour model and vegetation indices SAVI (soil-adjusted vegetation index), NDVI (normalised difference vegetation index), ARVI (atmospherically resistant vegetation index). The results of the study indicated the presence of significant spectral differences between winter wheat varieties due to their genetic diversity and response to agroecological conditions. It was found that spectral profiles and indices of photosynthetic activity of different varieties correlated with indicators of productivity and resistance to biotic and abiotic stresses. The obtained data helped not only to differentiate wheat varieties by spectral characteristics, but also to use them to build models for predicting yield and evaluating adaptive properties in climate change conditions. The informative value of satellite data for optimising winter wheat cultivation technologies and improving the efficiency of breeding programmes was shown. Such studies were promising in the development of precision agricultural production technologies, ensuring prompt and objective assessment of the state of crops over large areas, tracking the phenology of a particular wheat variety, and in breeding research
winter grain crops; varietal differences; remote monitoring of agrophytocoenoses; vegetation indices; spectral characteristics of plants