The collection includes articles based on the reports of scientists of the K. A. Timiryazev RGAU-MSHA, other universities and research institutions at the International Scientific Conference dedicated to the 155th anniversary of the K. A. Timiryazev RGAU-MSHA, which was held on December 2-4, 2020. The materials are presented on topical issues: land reclamation, reclamation, land protection and water supply, water resources management, hydraulic structures on hydro-reclamation systems; civil, industrial and agro-industrial construction, expertise and evaluation of industrial, civil buildings and building materials science; technosphere and environmental safety; reclamation and construction machines; information technologies in the agro-industrial complex; development of sheep and goat breeding in modern conditions; veterinary medicine and safety of livestock products, technologies for the production of feed and full nutrition of animals, biology, private zootechny; beekeeping and aquaculture.