Ustilago trichophora mycoherbicidal compositions and methods of use

摘要

PCT No. PCT/JP92/01184 Sec. 371 Date Jun. 9, 1993 Sec. 102(e) Date Jun. 9, 1993 PCT Filed Sep. 17, 1992 PCT Pub. No. WO93/05656 PCT Pub. Date Apr. 1, 1993.A herbicide useful for controlling weeds belonging to genus Echinochloa such as barnyardgrass, a method for controlling such weeds and novel microorganisms which can be used as an effective ingredient of the herbicide are disclosed. The present invention provides a herbicide comprising as an effective ingredient a microorganism belonging to genus Ustilago. The present invention also provides a method for controlling weeds by utilizing a microorganism belonging to genus Ustilago. The present invention also provides Ustilago trichophora B-171 (FERM BP-3968). The present invention further provides Ustilago trichophora B-174 (FERM BP-3969). The present invention further provides Ustilago trichophora B-185 (FERM BP-3970).