Influence of agricultural amendments on arsenic biogeochemistry and phytotoxicity in a soil polluted by the destruction of arsenic-containing shells

Agricultural soils can contain high arsenic (As) concentrations due to specific geological contexts or pollution. Fertilizer amendments could influence As speciation and mobility thus increasing its transfer crops toxicity. In the present study, field-relevant amounts of fertilizers were applied from a cultivated field that was former ammunition-burning site. Potassium phosphate (KP), ammonium sulfate organic matter (OM) these in laboratory experiments assess their impact on leaching, bioavailability Lactuca sativa microbial parameters. None markedly influenced mobility, although trends showed an increase with KP decrease sulfate. Moreover, induced small sativa, polluted soil amended significantly less phytotoxic than un-amended soil. Most probable numbers AsIII-oxidizing microbes activity strongly linked levels water soils. Ammonium negatively affected un-polluted Whereas no significant effect be detected, may have long term.