Effects of topsoil loss on wheat productivity in dryland zones of Chile

Meza, F.; Ros-Vera, Rafael; Santibáñez, F.; Brunel, Nidia

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dc.contributor.author	Meza, F.
dc.contributor.author	Ros-Vera, Rafael
dc.contributor.author	Santibáñez, F.
dc.contributor.author	Brunel, Nidia
dc.date.accessioned	2017-12-04T19:01:22Z
dc.date.available	2017-12-04T19:01:22Z
dc.date.issued	2011
dc.identifier.uri	http://repositorio.ucm.cl/handle/ucm/1577
dc.description.abstract	Considering that the most important processes of biogeochemical cycles occur in the upper first centimetres of the soil, minor degrees of erosion may affect crop productivity, especially in the case of low input dryfarming production systems, which dominate the central coastal areas of Chile. The purpose of this study was to evaluate the effect of topsoil loss on wheat productivity in dryfarming areas with Mediterranean climates in Central Chile. The experiment was conducted on a Chilean Alfisol (Pencahue; 35°18`53``S and 71°53`40``W), and the topsoil of this soil was progressively removed from a depth of 2 to 18 cm (2, 6, 10, 14 and 18 cm). Once the plots (25 m2) were prepared, winter wheat (Triticum aestivum L.; cultivar Pandora-INIA) was sown by applying the traditional techniques of the zone. A design was established on randomised blocks with six treatments and three replications. After one growing season, the results showed significant differences (p<0.05) in grain yield (kg ha-1) between the control treatment (T0) and the treatment with 18 cm of soil removed (T18) with productivity decreasing by 35%. Furthermore, most of the considered productivity parameters were negatively correlated with the depth of soil removed. The results highlighted the importance of topsoil fertility and depth in crop yield.	es_CL
dc.language.iso	en	es_CL
dc.rights	Atribución-NoComercial-SinDerivadas 3.0 Chile	*
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/3.0/cl/	*
dc.source	Journal of Soil Science and Plant Nutrition, 11(4), 129-137	es_CL
dc.subject	Soil erosion	es_CL
dc.subject	Topsoil depth	es_CL
dc.subject	Mediterranean climate	es_CL
dc.title	Effects of topsoil loss on wheat productivity in dryland zones of Chile	es_CL
dc.type	Article	es_CL
dc.ucm.facultad	Facultad de Ciencias Agrarias y Forestales	es_CL
dc.ucm.indexacion	Scopus	es_CL
dc.ucm.indexacion	Isi	es_CL
dc.ucm.indexacion	Scielo	es_CL
dc.ucm.doi	dx.doi.org/10.4067/S0718-95162011000400010	es_CL