Productivity of crop rotation using fertilizers and herbicides in the Vologda OblastOlga Chukhina, Nadezhda Tokareva, Anna Demidova, Tatyana Vasilieva, Elena Karbasnikova and Natalya ShchekutievaBIO Web Conf., 17 (2020) 00183DOI: https://doi.org/10.1051/bioconf/20201700183