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Ciencia e investigación agraria

versión On-line ISSN 0718-1620

Resumen

YOULTON, Cristian et al. Quantification and control of runoff and soil erosion on avocado orchards on ridges along steep-hillslopes. Cienc. Inv. Agr. [online]. 2010, vol.37, n.3, pp.113-123. ISSN 0718-1620.  http://dx.doi.org/10.4067/S0718-16202010000300010.

Soil erosion increases after building downward ridges along steep hillslopes, in particular during the first winter. This erosion decreases when trees grow, but runoff increases. This study presents results of erosion under five different treatments: (i) soil cover with native vegetation, (ii) bare downward ridges, (iii) downward ridges with six year-old avocado orchard, (iv) downward ridges with plant cover and (v) downward ridges covered with agroindustrial waste sludge. The results revealed 20 t ha-1 of soil erosion during the first year after ridges were built, while mitigation measures can reduce erosion in 90%. Adult orchard showed the largest runoff, which probably is due to the effect of a high and about constant soil moisture during irrigation period and smaller infiltration capacity of eroded soil.

Palabras clave : Soil erosion; runoff; agroindustrial waste sludge; plant cover; ridges along slope; steep hillslope; avocado orchards; Chile.

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