Agrobiological assessment of cotton breeding material in light chestnut soils Aleksey Ovchinnikov, Oybek Kimsanbaev, Valery Antonov, Igor Podkovyrov, Taisia Konotopskaya and Dmitry Ermak E3S Web Conf., 203 (2020) 02010 Published online: 05 November 2020 DOI: 10.1051/e3sconf/202020302010