| 摘要 |
PURPOSE: To obtain amicrobial composition for controlling weeds capable of reducing the amount of a microbial controlling agent used and manifersting high activities by synergistic effects by mixing the microbial controlling agent containing a mold of the genus Drechslera with 5-aminolevulinic acid which is a natural product. CONSTITUTION: This microbial controlling composition for weeds is obtained by adding 5-aminolevulinic acid to a microbial controlling agent containing a mold of the genus Drechslera having high activities against weeds of the genus Panicum without manifesting any pathogenicity in useful plants. The mold of the genus Drechslera used herein is a new strain of the Drechslera monoceras, especially MH-0015, (FERM BP-2652), MH-2653 (FERM BP-2653), MH-2679 (FERM BP-2656), MH-1889 (FERM BP-3410), MH-4415 (FERM BP-3413), MH-4418 (FERM BP-3414), etc., are especially cited as the mold. The composition is capable of manifesting sufficient controlling effects on Panicum, crusgalli in a dose for a herbicide which is respectively incapable of controlling the weeds alone and is safe without any fear for environmental pollution. |
