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dc.contributor.authorRomero Trigueros, Cristina 
dc.contributor.authorNortes Tortosa, Pedro Antonio 
dc.contributor.authorPedrero Salcedo, Francisco 
dc.contributor.authorMounzer, Oussama 
dc.contributor.authorAlarcón Cabañero, Juan José 
dc.contributor.authorBayona Gambín, José María 
dc.contributor.authorNicolás Nicolás, Emilio
dc.identifier.citationROMERO TRIGUEROS, Cristina et al. Assessment of the viability of using saline reclaimed water in grapefruit in medium to long term. Spanish Journal of Agricultural Research, 2014, 12(4), pp. 1137-1148. DOI: 10.5424/sjar/2014124-5495.es_ES
dc.description.abstractCitrus trees are strongly affected by salinity, especially in countries where irrigation is required as a semi-arid Mediterranean agronomic region. The aims of the study were i) to identify the best reliable plant-based water status indicator for field grown grapefruit trees irrigated with saline reclaimed water during five years of cultivation by measuring seasonal changes in physiological parameters (i.e. gas exchange and stem water potential measurements), leaf structural traits (i.e. leaf chlorophyll content, area-based leaf nitrogen and area-based dry mass), phytotoxic elements and yield; ii) to estimate phytotoxicity thresholds at leaf level. Our results showed that the chlorophyll content was the parameter with the highest number of measures with significant differences (p ≤ 0.05, ANOVA) between trees irrigated with reclaimed water and control trees throughout growing stages. Moreover, Chl a increased linearly with area-based leaf nitrogen (R2 = 0.63; p < 0.001) and area-based dry mass (R2 = 0.64; p < 0.001). We also determined the salt-induced phytotoxicity thresholds at which a reduction in yields occurs; these levels were Na: 0.1 g/100 g, Cl: 0.6 g/100 g and B: 100 ppm. In conclusion, we revealed the importance of leaf chlorophyll measurements as a significance diagnostic indicator of salt stress on field grown grapefruit trees. This parameter was also related to plantbased water status indicators such as stem water potential, stomatal conductance and net photosynthesis. Additionally, a salt accumulation potential at leaf level was shown, leading to possible risk in crop sustainability in the medium to long term.es_ES
dc.description.sponsorshipThis research has been supported by the projects SIRRIMED (KBBE-2009-1-2-3, Proposal No. 245159), SENECA (05665/PI/07 and 11872/PI/09), CONSOLIDER INGENIO 2010 (CSD2006-0067MEC) and CICYT (AGL2010-17553). C. Romero-Trigueros acknowledges the financial support received from CSIC program JAE.es_ES
dc.publisherInstituto Nacional de Investigacion y Tecnologia Agraria y Alimentariaes_ES
dc.relationEstudio de viabilidad del uso de agua regenerada y riego deficitario controlado en cítricoses_ES
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España*
dc.rights.uri© 2014 INIAes_ES
dc.titleAssessment of the viability of using saline reclaimed water in grapefruit in medium to long termes_ES
dc.subject.otherProducción Vegetales_ES
dc.subjectGas exchange measurementses_ES
dc.subjectPhytotoxic elementses_ES
dc.subjectPlant water statuses_ES
dc.subjectSaline reclaimed wateres_ES
dc.relation.projectIDCSD2006-0067 MECes_ES
dc.subject.unesco3102.05 Riegoes_ES
dc.subject.unesco3103.05 Técnicas de Cultivoes_ES
dc.contributor.funderMinisterio de Economía, Industria y Competitividades_ES
dc.contributor.funderComisión Interministerial de Ciencia y Tecnología, CICYTes_ES

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Atribución-NoComercial-SinDerivadas 3.0 España
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