Anti-stress effect of humic biostimulants on sunflower (helianthus l.) yield under global climate change conditions. РСНП [Internet]. 2025 Dec. 1 [cited 2026 Apr. 10];(2):102-20. Available from: http://pgbsfvg.btu.kharkiv.ua/index.php/cpsspfvg/article/view/174