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Revista Brasileira de Ciência do Solo

versão On-line ISSN 1806-9657

Resumo

BARBOSA, G. M. C.; TAVARES FILHO, J.  e  FONSECA, I. C. B.. Saturated and unsaturated hydraulic conducti-vity of a sewage sludge treated "Latossolo Vermelho eutroférrico" (Oxisol). Rev. Bras. Ciênc. Solo [online]. 2004, vol.28, n.2, pp.403-407. ISSN 1806-9657.  http://dx.doi.org/10.1590/S0100-06832004000200019.

This work aimed to evaluate the effects of sewage sludge application on the saturated and unsaturated hydraulic conductivity of a eutrophyc Red Latosol (Oxisol) during two consecutive years. This field experiment was conducted in a complete randomized block design with 3 replications and with the following treatments: control and increasing doses organic fertilization with sewage sludge (6, 12, 18, 24, and 36 Mg ha-1 on a dry basis) and mineral supplementation. The conductivity was measured in the field with a controlled suction infiltrometer for the matric potentials of 0, -1, -3 and -6 kPa. Under the experimental conditions of the present experiment, it was concluded that a sewage sludge dose of 12 Mg ha-1 altered the hydraulic conductivity at the potentials of 0 and -1 kPa, respectively.

Palavras-chave : biosolids; matric potentials; soil aggregation.

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