Resumo

ROJAS D, Ludwig M; ROJAS PALACIO, Hernán  e  MENJIVAR FLOREZ, Juan Carlos. Field satured hydraulic conductivity estimation on vinasse trated soil. Acta Agron. [online]. 2008, vol.57, n.2, pp.125-128. ISSN 0120-2812.

Changes of the satured hydraulic conductivity in a soil was  estimated  using the “falling head” and “point source” methods. The soil  treated with vinasse was an Ustipsamment Typic Sandy Isohipertermic located at the experimental center of the National University of Colombia at Palmira (3° 25' 39.81" N, 76° 25' 45.70" W; 953 m.a.s.l., 24 °C, 60% RH. and 1020 mm.). The  field methods used did not show statistical differences for the estimation of the satured hydraulic conductivity (p<0.05). However, a decreasing exponential relationship between hydraulic conductivity and vinasse concentration was found. The hydraulic conductivity was reduced about of 50% from the initial value to 2° Brix in a sandy soil, 5.3° brix to a sandy loam soil and 6.1° Brix to a clay loam soil.

Palavras-chave : Point source method; Simulation models; Falling head method; Irrigation.

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