Abstract
At present, the urgent task is to accelerate the development of alternative measures for the protection of plants, which is associated with the aggravation of the environmental situation, the desire to reduce pollution of agricultural landscapes and obtain agricultural products with minimal use of agrochemicals. Poplar extract is a plant growth stimulant due to the presence in its composition of saturated and unsaturated fatty acids, lipids, phenolic and polyphenolic compounds, amino acids, essential oils, vitamins, which provide a stable growth-stimulating effect.The aim was to evaluate the stimulating activity of extracts of balsamic poplar buds Populus balsamifera on the seed productivity of flax.
 Tasks: isolate the amount of flavonoids from balsamic poplar; to establish the growth-stimulating activity of balsamic poplar bud extract in relation to flax seeds.
 Methodology and scientific approaches: The method for obtaining the proposed balsam poplar extract includes the use of balsam poplar buds, air drying, grinding, extraction with 90% ethanol in a Soxhlet apparatus, filtration and evaporation to obtain the target product.
 Results and conclusions: the results of studying the growth-stimulating activity of extracts of balsam poplar Populus balsamifera showed high seed productivity of flax of Tomsk selection in the control group; reproduction conditions had a positive effect on the yield of flax.
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