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dc.contributor.authorLampurlanés Castel, Jorge
dc.contributor.authorCantero-Martínez, Carlos
dc.date.accessioned2017-01-14T10:04:28Z
dc.date.issued2003
dc.identifier.issn0002-1962
dc.identifier.urihttp://hdl.handle.net/10459.1/58961
dc.description.abstractTo study the effects of fallow and tillage on soil physical properties and barley (Hordeum vulgare L.) root growth, an experiment was conducted for several years on two soils of contrasting depth: deep, a Fluventic Xerochrept of 120-cm depth, and shallow, a Lithic Xeric Torriorthent of 30-cm depth. Subsoil tillage (ST), minimum tillage (MT), and no-tillage (NT) were compared in the deep soil and MT and NT in the shallow soil. Bulk density (BD), penetration resistance, gravimetric water content, gravel content, and root length density were determined at several times during the year. In the deep soil, BD was lower in the fallow and crop-after-fallow plots (1.26 Mg m−3) than in the continuous-crop plots (1.32 Mg m−3). In this soil, NT showed the largest bulk densities (mean of 1.34 Mg m−3), followed by MT (mean of 1.27 Mg m−3) and ST (mean of 1.22 Mg m−3). Larger penetration resistance was found in NT than in ST and MT in both soils soon after tillage operations. However, root length density profiles sometimes showed greater values for NT than for the other tillage systems, revealing a good soil condition for root growth under NT. Therefore, an increase in soil strength is observed under NT in the first years after its introduction that does not greatly affect root growth in well-structured soils. Fallow reduces soil strength due to the effect of tillage and natural loosening factors like drying and wetting cycles or fauna activity. This effect extends to the following crop.ca_ES
dc.description.sponsorshipThis work was funded by the Comisión de Investigacion Científica y Técnica (CICYT), projects AGR91-312 and AGF94-198. We thank the Ministerio de Educación y Cultura (MEC), which funded the doctorate studies of J. Lampurlanés. We also thank J. Boixadera and C. Herrero from the Secció de Noves Tecnologies (DARP), who lent us the penetrographca_ES
dc.language.isoengca_ES
dc.publisherAmerican Society of Agronomyca_ES
dc.relationMIECI/PN1988-1991/AGR91-312ca_ES
dc.relationMIECI/PN1992-1995/AGF94-198ca_ES
dc.relation.isformatofReproducció del document publicat a https://doi.org/10.2134/agronj2003.5260ca_ES
dc.relation.ispartofAgronomy Journal, 2003, vol. 95, núm. 3, p. 526-536ca_ES
dc.rights(c) American Society of Agronomy, 2003ca_ES
dc.subject.otherOrdi -- Conreuca_ES
dc.subject.otherDrenatgeca_ES
dc.titleSoil bulk density and penetration resistance under different tillage and crop management systems and their relationship with barley root growthca_ES
dc.typearticleca_ES
dc.identifier.idgrec006685
dc.type.versionpublishedVersionca_ES
dc.rights.accessRightsinfo:eu-repo/semantics/restrictedAccessca_ES
dc.identifier.doihttps://doi.org/10.2134/agronj2003.5260
dc.date.embargoEndDate10000-01-01


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