Forecasting of yield of Rubus caesius berry-field in the forests of the steppe Pridonye

The article deals with research of specificities of forecasting of yield of Rubus caesius in the main groups of forests of the steppe Pridonye [1]. Relevance of the research is due to the fact that, in natural forests of the steppe Pridonye the Rubus caesius is widely spread. According to data of the previous researches, there are the following factors, that influence growth and fruiting of wild Rubus caesius berry-field: type of forest, crown density and weather conditions. At the same time, the issue of forecasting of yield of Rubus caesius in forests of the steppe Pridonye remains open. As the result of this work, it was established by authors, that the most quantity of flowers of Rubus caesius per square meter is approximately the same in all groups of types of forest of the studied territory (65-86 pcs./m2), except oak ravine thalweg forests, where this value is significantly lower (40-43 pcs./m2). At the same time, the most quantity of sets were founded in black poplars near the riverbed (47-63 pcs...