O.A. Podvigina1, N.N. Potrakhov2, N.E. Staroverov3, Yu.N. Potrakhov4

1 Federal State Budgetary Scientific Institution All-Russian Scientific Research Institute of Sugar Beet and Sugar named after A.L. Mazlumov (Voronezhskaya obl., Russia)

2 EPU SPb GETU “LETI”