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Compaction under different tillage systems in dryland Mediterranean soils in central Spain

AutorLópez-Fando, Cristina ; Almendros Martín, Gonzalo ; Dorado, José
Palabras claveTillage systems
Dryland mediterranean soils
Fecha de publicación1994
EditorAustralian Society of Soil Science
CitaciónProceedings of the Second International Symposium on Sealing, Crusting and Hardsetting Soils : Productivity and Conservation held at The University of Queensland, Brisbane, Australia, 7 - 11 February : 515-518 (1994)
ResumenThe effects of tillage and machinery traffic on sorne physical properties and plant development were studied in semi-arid soils from Central Spain where continuous monitoring ofthe interactive effects oftillage, traffic control and crop rotations are being carried out in long-term experiments . The results suggested significant differences in the vertical distribution of soil wate r. The moisture below the plough layer (0-15 cm) remained high under notillage condit ions whereas, with conventional tillage, the water cont ent was greatest in the surface . These differences in soil moisture were reflected in yield ofbarley. The soil compaction indices showed significant differences in conventional tillage or no-tillage condit ions, but also depended greatly on the growing season. At sowing, the maximum penetration resistance corresponded to the plots subjected to no-tillage, and did not depend on mechanical effects of machinery traffic. At harvesting, the highest values for soil compaction were found in sampling points affected by wheel traffic in the conventional tillage plots
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