Evaluation of agricultural productivity and of metals concentration in grains of corn irrigated with anaerobic effluent / Avaliação de produtividade agricola e de concentrações de metais nos grãos, de cultura de milho irrigada com efluente anaerobio

AUTOR(ES)
DATA DE PUBLICAÇÃO

2008

RESUMO

This work had the objective to evaluate the impact of wastewater irrigation on the productivity of corn using effluent from an anaerobic pond, and on physico-chemical and microbiological system soil-water-plant. Using the technique of irrigation by shallow furrows, will be tested 3 treatments corresponding to fertilizer and natural water available, effluent anaerobic disinfected with calcium hypochlorite, and anaerobic effluent not disinfected. They are provided two cropland, one of the rainy season and other in dry period. The productivity was similar to the fertilization nitrogen conventional for the second crop, and for the first crop similar only by the anaerobic treatment and anaerobic desinfected treatment. There was significant difference between the results on treatments for a number of ears per plant and the height of plants, And for accumulated metals in the grains, did not result in harmful concentrations to human health, and there was only significant difference for the metal covers for the 2nd harvest

ASSUNTO(S)

esgotos wastewater milho anaerobic effluent irrigation post-treatment aguas residuais de irrigação corn soil disposition tratamento anaerobio

ACESSO AO ARTIGO

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