ASSESSMENT OF THE EFFECTIVENESS OF BIOFERTILIZERS IN THE CULTIVATION OF COMMON BUCKWHEAT (FAGOPYRUM ESCULENTUM) IN AN ORGANIC CROP ROTATION SYSTEM

This study evaluates the effectiveness of biofertilizers in enhancing the productivity of common buckwheat (Fagopyrum esculentum Moench) within an organic crop rotation system in the Sumy region of Ukraine.A two-year field experiment (2022-2024) assessed the impact of the biofertilizer Leanum applied through seed inoculation, foliar spraying, and their combination on two buckwheat varieties: Selianochka and Simka.Key productivity indicatorsincluding the number of grains per plant, grain mass per plant, 1000-grain weight, and overall yieldwere analyzed.The results demonstrated that biofertilizer application significantly improved all yield components, with the highest productivity observed in the Selianochka variety under combined treatment, achieving yields up to 2.6 t/ha.The findings highlight the crucial role of biofertilizers in improving crop yields and soil health in organic farming systems, supporting sustainable agricultural development and food security, especially under the current land use constraints in Ukraine.