Fruit growing
and viticulture of South Russia

Annotation

Now in the connection with a solution of the problem of import substitution the gardeners of the South of Russia have a task to increase in volumes of fruits production. However the solution of this task is restrained by frequent manifestation of weather stressors, including the intensity of a temperature factor. The purpose of research is to prove by phisiological and biochemical methods the prospects and terms of boric acid use for increase in productivity of stone fruit crops in the years, various on weather conditions, including the manifestation of low temperatures during the winter and spring period. Sweet cherry varieties of Frantsis and Kavkazskaya on sweet cherry seedlings and plum varieties of Stenly and Prikubanskaya on cherry plum seedlings are studied. It is revealed the positive influence of boron on economic efficiency of Frantsis sweet cherry: the autumn and spring processings of trees of boric acid have provided the increase in productivity by 14-17%. The similar data have been obtained also when processing of plum. Autumn processing of plum trees by boric acid causes the increase in RNA content for 5-7% in the top buds of one year shoots. It is shown that under the conditions of the Southern Region of the Russian Federation the processing of sweet cherry and plum trees by boric acid in autumn and spring terms exerts the positive impact on generative activity of plants. Increase in productivity is provided due to increase in quantity of flowers on a tree (at autumn processing) and efficiency of fertilization (at spring processing). The positive influence of boric acid (processing in the spring) on preservation of viable pollen when temperature stressor action (spring frosts) is established. The various reaction of varieties to processing is revealed.