title: Stimulation of autotrophic ammonium oxidation in rice rhizosphere soil by the insecticide carbofuran.
abstract: The application of the insecticide carbofuran (technical or formulated) to rice rhizosphere soil suspensions at 10 and 100 ppm (mug/ml) of active ingredient distinctly stimulated the autotrophic oxidation of ammonium. Evidence suggested that Nitrosomonas sp. was enriched in the presence of carbofuran. Formulated carbofuran (Furadan 3G) exhibited a more pronounced stimulation of ammonium oxidation than that exhibited by technical-grade (99.5%) carbofuran, a result which was attributed to the CaCO(3) present in the formulation.
authors.affiliation: Division of Soil Science and Microbiology, Central Rice Research Institute, Cuttack 753006, India.
authors.forename: C
authors.initials: C
authors.lastname: Ramakrishna
authors.forename: N
authors.initials: N
authors.lastname: Sethunathan