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(Article of periodic en Anglais - 2012)

Document title

Dynamics of aggregate destabilization by water in soils under long-term conservation tillage in semiarid Spain

Authors(s) and Affiliation(s)

BLANCO-MOURE N. (1) ; MORET-FERNÁNDEZ D. (1) ; VICTORIA LÓPEZ M. (1) ;
(1) Dep. de Suelo y Agua, Estación Experimental de Aula Dei, Consejo Superior de Investigaciones Científicas (CSIC), Zaragoza, ESPAGNE

Abstract

The aims of this study were to assess the effect of long-term no tillage (NT) on water aggregate stability in 5 different cereal production areas of Aragon and identify the main mechanisms involved on aggregate breakdown. The study was conducted under on-farm conditions where pairs of adjacent fields under NT and conventional tillage (CT) were compared. Soils were slightly to highly calcareous with medium textures ranging from sandy loam to silty clay loam. Results indicate that NT increased surface aggregate stability with respect to CT systems through lower soil disturbance and higher organic carbon (OC) content at the soil surface. Slaking was the dominant disaggregation process of the cultivated soils and was strongly and negatively affected by aggregate-associated OC. This study shows that, under the rainfed conditions of semiarid Aragon, NT reduces the susceptibility of soil surface to crusting and water erosion as compared to CT systems

Source

Article of periodic

published at : Catena / ISSN 0341-8162

Editor : Catena, Cremlingen-Destedt - ALLEMAGNE (1973)

Millesime : 2012, vol. 99 [pp. 34-41]

Bibliographic references : 1 p.

Collation : 4 fig., 4 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 16767

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1016/j.catena.2012.07.010

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2013
Refdoc record number (ud4) : 26846780 : Permanent link - XML version
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