THE INCUBATION PERIOD OF THE CAUSATIVE AGENT OF SUNFLOWER DOWNY MILDEW OF DIFFERENT RACES, DEPENDING ON TEMPERATURE
Under different temperature conditions, the authors determined the incubation period of the most widespread in the Russian south races 330, 334, 710 and 730 of sunflower downy mildew pathogen - oomycete Plasmopara halstedii (Farl.) Berl. et de Toni.