We are deeply saddened to announce that on January 4, 2021, at the age of 74, the heart of the famous forest breeder, a leading researcher of the laboratory of reforestation and selection of the Ukrainian Research Institute of Mountain Forestry. PS Pasternak, Candidate of Agricultural Sciences, Corresponding Member of the Forestry Academy of Sciences of Ukraine Roman Mykhailovych Jacyk. He was a man of incredible diligence, inexhaustible energy, and at the same time modesty and reliability. Roman Mikhailovich's contribution to the development of forest breeding, science and training of highly qualified specialists is difficult to overestimate.