Abstract The phytotoxicity, antioxidant activity and optical density of the actinomycetes strains Streptomyces carpaticus RCAM04697, Nocardiopsis umidischolae RCAM04882, RCAM04883. were isolated from soil ecosystems arid zone deposited in Departmental Collection Useful Microorganisms for Agricultural Purposes Federal State Budget Scientific Institution All-Russian Research Institute Agriculture...