Abstract
It was found in field, and laboratory experiments that of 50 ppm of the herbicide bromoxynil (3,5-dibromo-4-hydroxybenzonitrile added to grey forest soil 20-80% were still detected after three months). Bromoxynil did not influence (except for a short-termed stimulation of the number of bacteria) the amount and composition of the basic groups of soil microorganisms. In enrichment cultures of soil microorganisms metabolie products of bromoxynil decomposition (3,5-dibromo-4-hydroxybenzamide and 3,5-dibromo-4-hydroxybenzoic acid) were detected and a stimulating effect of cosubstratos on its decomposition was demonstrated. Bromoxynil concentration, aeration conditions and the presence of cosubstrates (ribose in particular) influenced the rate and degree of the decomposition process inPsevdomonas putida. In addition to the degradation products mentioned above, production of methoxylated and partially dehalogenated aromatic compounds was detected.
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Golovleva, L.A., Pertsova, R.N., Kunc, F. et al. Decomposition of the herbicide bromoxynil in soil and in bacterial cultures. Folia Microbiol 33, 491–499 (1988). https://doi.org/10.1007/BF02925776
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DOI: https://doi.org/10.1007/BF02925776