Influence of organic fertilizer “Biagum” on the growth of annual apple tree seedlings

The article considers the issue of the influence of organic fertilizer "Biagum" on the growth of annual apple seedlings of the varieties Ladoga, Osennee polosatoe (Streifling, Shtrifel) and Antonovka vulgaris, engrafted on the seed stock. During the research, a systematic approach was used to study the influence of soil conditions on the development of apple seedlings according to generally accepted experimental methods: morphology of fruit and berry plants, research methods and guidelines for the diagnosis of mineral nutrition of apple trees and other garden crops. According to the program and methodology, when laying experimental plots, an analysis of the initial state of nutrients and morphological parameters of experimental samples of apple seedlings was carried out. Studies have shown that the survival rate at various doses of applied organic fertilizers was 98%, the planting material is not susceptible to diseases and can be used in further observations. The scientific novelty of the work was to identify patterns of plant development from the doses of applied fertilizer. It was found out that the greatest increase in the height of seedlings in all apple varieties is observed at a fertilizer dose of 8 t/ha, and the yield of seedlings of the first grade according to GOST R 59653-2021 increased by 25% compared with the control. The growth rate of seedlings depends significantly on the variety of apple trees. The studied varieties have differences in the growth rate depending on the doses of fertilizer application. The use of organic fertilizer "Biagum" has shown that it meets all the requirements and has a positive effect on the survival and growth processes of annual fruit seedlings.