The Effect of 2,3,6-Trichlorophenylacetic and 2,2-Dichloropropionic Acids on Nitrite Oxidation1

AUTOR(ES)

Mayeux, Jerry V.

RESUMO

The effects of two herbicides, 2,3,6-trichlorophenylacetic acid, sodium salt, and 2,2-dichloropropionic acid, sodium salt, on nitrite-oxidizing bacteria were studied by the soil perfusion technique. The time of application of 2,3,6-trichlorophenylacetic acid affected its toxicity to the nitrifier. When it was present in the environment as the nitrifier started growth, it was more toxic than if the organisms were allowed to nitrify actively before they were subjected to the herbicide.

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