Downy mildew is one of the most spread and harmful diseases of sunflower (Helianthus annuus L. ). The aim of the study was to determine the races of the pathogen of the disease of the oomycete Plasmopara halstedii (Farl. https://parisnaturalfoodes.shop/product-category/bcaa-xdm-spiked-powder-berries/