Peculiarities of the Middle Prydniprovia forest plantations use with the participation of Robinia pseudoacacia as raw material land for beekeeping

Abstract

Preconditions for the creation of artificial forest plantations of Robinia pseudoacacia L. in Kaniv Prydniprovia region, which were planted on ravine-beam systems and Dnipro cliffs during forest reclamation measures fighting against erosion processes, are presented. At the beginning of the 20th century, it began to be widely used in afforestation of areas with heavily washed-out soils, in particular on the steep slopes of ravines, on their bottoms and on the slopes of landslide terraces. Artificially created Robinia pseudoacacia plantations, in addition to their soil protection and water retention role, had a significant list of useful properties: wood source, medicinal plant, raw material base for beekeeping. Ecological and coenotic features of artificially formed plantations and spontaneously formed phytocenoses of Robinia pseudoacacia are reflected. A list of accompanying tree, shrub and herbaceous species of nectar- and pollen-bearing ecosystems of the Kaniv Nature Reserve, which grow in artificial plantations of Robinia pseudoacacia, which may also have some raw material value for beekeeping, has been formed. The data of phenological observations on the beginning of its flowering on the territory of Kaniv Nature Reserve during the last 50 years are given, where, depending on the temperature conditions in diffe rent years, it began to bloom in the time range of 30 days. The dependence of honey productivity of an apiary with a constant number of bee colonies on certain characteristics of weather conditions during the last 10 years is analyzed. The performance of the Robinia pseudoacacia honey harvest is not stable due to differences in weather conditions from year to year. There is a slight direct positive relationship between the amount of honey obtained and the sum of average daily temperatures for the second and third decade of May.