Changes in the composition and properties of biochar after one-year application Marya Bovsun, Оlga Nesterova, Viktoriia Semal, Аlexandra Khokhlova and Nikolay Sakara E3S Web Conf., 217 (2020) 10009 Published online: 14 December 2020 DOI: 10.1051/e3sconf/202021710009