Аннотация:A study is performed of the effect 1-MeV electron radiation has on the productivity and phenologyof potatoes infected with the phytopathogen Rhizoctonia solani Kühn. Preplanting irradiation of seed tuberswith low-energy electron radiation at a dose of 30 Gy halves the number of tubers affected by the disease,while the potato yield is reduced by 30%.