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Ecosistemas y recursos agropecuarios

versión On-line ISSN 2007-901Xversión impresa ISSN 2007-9028

Resumen

ZAVALA CRUZ, Joel et al. Transect on terraced soils with citrus groves in Tabasco. Ecosistemas y recur. agropecuarios [online]. 2014, vol.1, n.2, pp.123-137. ISSN 2007-901X.

Soil studies at a medium scale make it possible to generate reliable information with which one may plan agricultural uses. As an alternative to speed up semi-detailed soil mapping, a transect was analysed to determine geographical distribution, relationship with topography, and physical and chemical characteristics. Based on the geomorphology of a 71 895.5 ha area in Huimanguillo, Tabasco, and considering the slope, altitude and citrus use, eight profiles along a 32 km transect were described, complemented by 21 profiles at different altitudes. The classification and characterisation were based on the World Reference Base for Soil Resources and the RECNAT-NOM-021 2000. Acrisol and Cambisol soils were the representative groups, and eight subunits covering 89.4 % of the total area were identified. The low position of terrace 1 (10-20 masl) determined the development of subunits with internal drainage problems, like a Ferralic-Gleyic Cambisol in floodplains and valleys and an Umbric-Gleyic Acrisol in depressions and flat tops. The altitude of terrace 2 (20-60 masl) and the relief of slightly to moderately sloping hills, favoured the formation of well drained Hiperdistric-Ferric, Umbric-Plinthic, Humic-Umbric, Humic-Plinthic and Ferric-Umbric Acrisols. The soils are deep and poor on interchangeable bases; but the Umbric-Plinthic, Humic-Plinthic and Humic-Umbric Acrisols, where there are more citrus groves, have a thicker Ap horizon, a greater organic matter content and less acidity, indicating a better condition.

Palabras llave : Acidity; classification; management; relief; soil subunits.

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