Coenoflora of wheat crops of the Penza region

The article presents the results of a four-year monitoring of wheat crops in the Penza region. In 2019-2022, 49 fields of winter and spring wheat were surveyed in 14 districts of the region. The coenoflora of crops is represented by 162 plant species belonging to 35 families, 128 genera. The stable participation in the addition of both the coenoflora of particular crops and the segetal flora of different regions of four families: Asteraceae, Poaceae, Fabaceae and Brassicaceae was revealed. A decrease in the species richness of the weed component of both winter and spring wheat in the main part of crops compared to the edges is shown. The most common in all areas of winter and spring wheat fields are Tripleurospermum inodorum and Convolvulus arvensis . Some features of the weed component of spring wheat crops in comparison with winter wheat, due to different agricultural techniques of crop cultivation, have been identified.