The effectiveness of methods of preliminary creation of material in potato seed productionI.T. Ergashev, Kh.K. Bekmuradova, O.Kh. Turakulov, F.I. Toshkentbaeva and U.I. ErgashevE3S Web of Conf., 510 (2024) 01006DOI: https://doi.org/10.1051/e3sconf/202451001006