Comparative analysis of the growth of walnut and black walnut in the Kinelsky district of the Samara region

The paper presents the results of research on the comparative analysis of walnut and black walnut growth under natural environmental conditions, conducted from 2015 to 2022. The author compares the annual growth, as well as the degree of freezing of walnut and black walnut trunks. The degree of acclimatization of nuts to the conditions of central Russia is being studied. As a result of the conducted research, it can be concluded that the black walnut has a height of the aboveground part greater than that of the walnut, and this trend is observed throughout the study. As a result of a comparative analysis of the long-term dynamics of the growth of shoots of walnut seedlings with a black walnut seedling, it turned out that the growth of black walnut shoots in most cases was observed more actively than in walnut seedlings. It can also be concluded that the trunk of walnut seedlings can freeze, and in particularly cold winters it can freeze by 60% of the entire height of the aboveground part, however, in comparison with walnut, black walnut tolerates winter temperatures very well and practically does not freeze, which makes it more promising for cultivation in the Kinelsky district Samara region.