Hydraulic conductivity, residue cover and soil surface roughness under different tillage systems in semiarid conditions
Issue date
2006Suggested citation
Lampurlanés Castel, Jorge;
Cantero-Martínez, Carlos;
.
(2006)
.
Hydraulic conductivity, residue cover and soil surface roughness under different tillage systems in semiarid conditions.
Soil and Tillage Research, 2006, vol. 85, núm. 1-2, p. 13-26.
https://doi.org/10.1016/j.still.2004.11.006.
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Show full item recordAbstract
The objective of this study was to investigate the effect of tillage and cropping system on near-saturated hydraulic
conductivity, residue cover and surface roughness to improve soil management for moisture conservation under semiarid
Mediterranean conditions. Three tillage systems were compared (subsoil tillage, minimum tillage and no-tillage) under three
field situations (continuous crop, fallow and crop after fallow) on two soils (Fluventic Xerochrept and Lithic Xeric Torriorthent).
Soil under no-tillage had lower hydraulic conductivity (5.0 cm day 1
) than under subsoil tillage (15.5 cm day 1
) or minimum
tillage (14.3 cm day 1
) during 1 of 2 years in continuous crop due to a reduction of soil porosity. Residue cover at sowing was
greater under no-tillage (60%) than under subsoil or minimum tillage (<10%) in continuous crop. Under fallow, residue cover
was low (10%) at sowing of the following crop for all tillage systems in both soils. Surface roughness increased with tillage, with
a high value of 16% and decreasing following rainfall. Under no-tillage, surface roughness was relatively low (3–4%). Greater
surface residue cover under no-tillage helped conserve water, despite indications of lower hydraulic conductivity. To overcome
the condition of low infiltration and high evaporation when no-till fallow is expected in a cropping sequence, either greater
residue production should be planed prior to fallow (e.g. no residue harvest) or surface tillage may be needed during fallow.
Is part of
Soil and Tillage Research, 2006, vol. 85, núm. 1-2, p. 13-26European research projects
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