Show simple item record

dc.contributor.authorPlaza Bonilla, Daniel
dc.contributor.authorÁlvaro-Fuentes, Jorge
dc.contributor.authorHansen, Neil C.
dc.contributor.authorLampurlanés Castel, Jorge
dc.contributor.authorCantero-Martínez, Carlos
dc.date.accessioned2017-01-14T11:04:16Z
dc.date.issued2014
dc.identifier.issn0032-079X
dc.identifier.urihttp://hdl.handle.net/10459.1/58963
dc.description.abstractBackground and aims Understanding the interaction between crop roots and management and environmental factors can improve crop management and agricultural carbon sequestration. The objectives of this study were to determine the response of winter cereal root growth and aboveground–belowground biomass ratios to tillage and environmental factors in the Mediterranean region and to test an alternative approach to determine root surface area. Methods Winter cereal root growth and biomass ratios were studied in three sites with different yield potential according to their water deficit (high yield potential, HYP; medium yield potential, MYP; low yield potential, LYP) in the Ebro Valley (NE Spain). At all sites, three tillage systems were compared (conventional tillage, minimum tillage, no-tillage (NT)). Root surface density (RSD), soil water content, yield components, and grain yield were quantified and shoot-toroot and grain-to-root ratios were calculated. RSD was measured with the use of image analysis software comparing its performance to a more common intersection method. Results Significant differences on RSD between sites with different yield potential were found being the greatest at the HYP site and the lowest at the LYP one. Shoot-to-root ratio was 2.7 and 4.6 times greater at the HYP site than at the MYP and LYP sites, respectively. Moreover, the grain-to-root ratio was significantly affected by site, with a ratio that increased with yield potential. Tillage had no significant effects on RSD at any of the sites studied; however, tillage did affect grain yield, with NT having the greatest yields. Conclusions This study shows that in theMediterranean dryland agroecosystems, winter cereals relative aboveand belowground biomass growth is strongly affected by the yield potential of each area. NT in theMediterranean areas does not limit cereal root growth and leads to greater grain yields. A highly significant linear relationship (P<0.001; r2 0.77) was observed between the root surface values obtained with the free-software image analysis method and the most common intersection method, showing it to be a reliable method for quantifying root density.ca_ES
dc.description.sponsorshipThis work was supported by the Comisión Interministerial de Ciencia y Tecnología of Spain (grants AGL2007-66320-CO2-01 and AGL2010-22050-CO3-01/02).ca_ES
dc.language.isoengca_ES
dc.publisherSpringer Verlagca_ES
dc.relationMIECI/PN2004-2007/AGL2007-66320-CO2-01ca_ES
dc.relationMICINN/PN2008-2011/AGL2010-22050-CO3-01/02ca_ES
dc.relation.isformatofVersió postprint del document publicat a https://doi.org/10.1007/s11104-013-1926-3ca_ES
dc.relation.ispartofPlant and Soil, 2014, vol. 374, p. 925-939ca_ES
dc.rights(c) Springer Science+Business Media Dordrecht 2013ca_ES
dc.subjectPlant biomass ratiosca_ES
dc.subjectMediterraneanca_ES
dc.subjectRootsca_ES
dc.titleWinter cereal root growth and aboveground–belowground biomass ratios as affected by site and tillage system in dryland Mediterranean conditionsca_ES
dc.typeinfo:eu-repo/semantics/articleca_ES
dc.identifier.idgrec020190
dc.type.versioninfo:eu-repo/semantics/acceptedVersionca_ES
dc.rights.accessRightsinfo:eu-repo/semantics/openAccessca_ES
dc.identifier.doihttps://doi.org/10.1007/s11104-013-1926-3


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record