STUDYING THE PRODUCTIVITY OF VEGETATIVE MASS OF BUCKWHEAT FOR USE IN THE PRODUCTION OF RUTINA

The paper presents the main results of studying the productivity of the vegetative mass of buckwheat plants (Fagopyrum esculentum Moench) using various predecessors when cultivated in the conditions of the Akmola region for use in the production of rutin. A comparison of the yield of buckwheat green mass was carried out using two different predecessors - pure flat-cut fallow and the stubble of annual grain crops. Yield accounting was determined by three phases of plant development: beginning of flowering, full flowering, beginning of ripening. For study, typical biotypes of buckwheat belonging to various ecological and geographical groups cultivated in the conditions of Northern Kazakhstan were identified. The level of phytomass productivity was significantly influenced by various factors. Significant differentiation was observed in the responsiveness of biotypes to changes in environmental conditions. The most significant factor should include weather conditions during the years of the experiments (amount of precipitation and positive temperatures). The agricultural background of cultivation had a strong influence on productivity. In particular, the advantage of the vapor background was observed throughout all years of experience. Biotypes 255-25, 215-12, 211-3, 197-10, 166-13 had the maximum level of green mass formation under contrasting moisture conditions. The dynamics of development of buckwheat plants throughout the entire growing season was traced and the development phase corresponding to the maximum yield of green mass was determined. As a result of the research, the potential productivity of buckwheat green mass in the conditions of the Akmola region was determined. A comparison was made of the crop yield level based on pure fallow and the stubble predecessor. The most productive biotypes in terms of phytomass are included in the selection process for further development.