A species of Burkholderia sp with no known pathogenicity to vertebrates but with herbicidal activity is provided. Also provided are products derived from a culture of said species and methods of modulating weeds using said products.本發明提供一種對脊椎動物無已知致病性但具有除草活性之伯克氏菌屬之物種。亦提供來源於該物種之培養物之產物及使用該等產物調節野草之方法。