Resumen

RODRIGUEZ, R.; MORENO, J.; DIAZ, J.  y  LARREAL, M.. Behavior of the Electric Conductivity in two Series of floor of the sector Pipe San Miguel, municipality Mara, state Zulia during a two year-old period.. Rev. Fac. Agron. [online]. 2006, vol.23, n.4, pp.395-406. ISSN 0378-7818.

The study was carried out in soils with salinity problems, located in the influence area of Caño San Miguel, municipality Mara, state Zulia, with a climate continental subecuatorial, very dry tropical forest. The evolution of the electric conductivity was studied in two soils series of agricultural importance in the area, during a two years period (97-.99). The series Caño San Miguel (L1-3) and El Derrote were selected based on their agricultural development, with three and two salinity levels respectively. In order to measure electric conductivity (CE), 120 samples to were taken at diferents depths into the soil. A factorial nested design totally at random with six replications was used. Results evidence a significant decrease (P<0,01) in the electric conductivity for both series, mainly caused by salts lixiviación, as a consequence of the high precipitations registered in the period of study. The salinity level increased to more depth into the soil profile.

Palabras clave : soil series; salinity; electrical conductivity; leaching.