Effect of herbicides on growth of some microscopic soil fungus species.

The effect of 14 herbicides and two herbicide combinations of three microscopic soil fungus species was investigated by Miller's method. (i) None of the 14 herbicides and 2 combinations belonging to four derivative groups induced the growth of Aspergillus niger, Fusarium oxysporum and Rhizopus nigricans; (ii) Higher doses of the herbicides prevented the growth of all test organisms significantly, the triasin derivative Hungazin PK being the less and tiocarbamate derivatives Alirox B 80 EC, Anelda Plus 80 EC and Anelda III being the most inhibitory. (iii) The sensitivity of test organisms against the examined herbicides decreased in the order of Fusarium, Rhizopus, Aspergillus.