J. V. Barkan
St.Petersburg State Forest Technical University
Russian Federation

Barkan Juliette V. – PhD student,

194021. Institutskiy per. 5. St. Petersburg

D. E. Raupova
St.Petersburg State Forest Technical University
Russian Federation

Raupova Diana E. – PhD student,

194021. Institutskiy per. 5. St. Petersburg

D. A. Danilov
St.Petersburg State Forestry Technical University; Leningrad Research Agriculture Institute Branch of Russian Potato Research Centre
Russian Federation

Danilov Dmitry A. – DSc (Agriculture), Professor of Forestry Department, 194021,  Institutskiy per. 5. St. Petersburg;

principal researcher of Department of Agrochemistry and Agrolandscapes, 188338. Institutskaya str. 1, Belogorka, Leningrad Region