FEATURES OF THE FUNCTIONING OF THE ASSIMILATION APPARATUS OF LUPINUS ALBUS DEPENDING ON THE USE OF ECO-BIOLOGICAL PREPARATIONS

The high efficiency and justified necessity of using biopreparations for pre-sowing seed treatment and foliar fertilization has been proven. The results of studies on the effectiveness of the application of pre-sowing treatment and foliar feeding of white lupine plants in the conditions of the right-bank forest-steppe of Ukraine are presented. The optimal leaf surface area and photosynthetic potential were determined. A positive effect of pre-sowing seed treatment with the bacterial preparation Rhyzogumin and the growth stimulator Emistym C in combination with two foliar feedings Emistym C on the content of chlorophyll in the leaves of white lupine varieties Veresnevyi and Makarivskyi was established. Pre-sowing treatment of white lupine seeds of the Veresnevyi and Makarivskyi varieties in combination with foliar feeding contributed to the increase of the leaf surface area and the formation of the photosynthetic apparatus of plants. The effect of the investigated biological preparations on the formation of the assimilation surface and the synthesis of chlorophyll in the leaves of white lupine in the conditions of the right-bank forest-steppe of Ukraine has been proven. It was determined that the greatest stimulatory effect was obtained in the variant where the pre-sowing treatment of seeds involved the interaction of the biological preparations Rhyzogumin and Emistym C in combination with two foliar feedings of Emistym C. The three-year research results also indicate a significant impact of the researched technological methods of cultivation on grain yield.