Plenary reports and lectures

Andrey V. Kondratenko
Candidate of Agricultural Sciences, First Deputy Minister, Ministry of Agriculture and Food of the Republic of Mari El, Yoshkar-Ola, Russia.

"Status and prospects for the development of the agro-industrial complex of the Republic of Mari El"

Vatslav Romanyuk
Doctor of Technical Sciences, Professor, Director of the Technological and Nature Research Institute, Poznan, Poland.

"Ventilation and constructional solutions influencing microclimate in livestock buildings for dairy cattle"

Vitaliy A. Likhanov
Doctor of Technical Sciences, Professor, Department of Thermal Engines, Vehicles and Tractors, Vyatka State Agricultural Academy, Kirov, Russia.

"Problems of using gas engine fuel in agriculture"

Sergey I. Novoselov
Doctor of agricultural sciences, professor, head of the department of the general agriculture, crop production, agrochemistry and protection of plants, Mari state university, Yoshkar-Ola, Russia.

"Influence of photochemical reactions on the content and transformation of mineral nitrogen in soil"