Changes in the species composition of a fallow plot under the influence of crop rotation in the southwest of the Central Russian upland

The data of a floristic study of the species composition of a fallow plot in the Belgorod region during the cultivation of Zea mays and Sorghum halepense are presented. A list of extinct species has been identified, as well as species that have appeared in connection with agricultural cultivation. crops An assessment was made of changes in the ratio of florocenotypes according to V.V. Alekhine and origin. 18 plant species were identified that maintained their presence throughout the entire study period.