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http://hdl.handle.net/10261/278247
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Campo DC | Valor | Lengua/Idioma |
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dc.contributor.author | Barea Navarro, José Miguel | es_ES |
dc.contributor.author | Toro, Marcia | es_ES |
dc.contributor.author | Orozco, M. O. | es_ES |
dc.contributor.author | Campos, E. | es_ES |
dc.contributor.author | Azcón González de Aguilar, Rosario | es_ES |
dc.date.accessioned | 2022-09-01T10:03:38Z | - |
dc.date.available | 2022-09-01T10:03:38Z | - |
dc.date.issued | 2002 | - |
dc.identifier.citation | Nutrient Cycling in Agroecosystems 63: 35-42 (2002) | es_ES |
dc.identifier.issn | 1385-1314 | - |
dc.identifier.uri | http://hdl.handle.net/10261/278247 | - |
dc.description.abstract | A pot experiment was designed to evaluate the interactive effects of multifunctional microbial inoculation treatments and rock phosphate (RP) application on N and P uptake by alfalfa through the use of 15N and 32P isotopic dilution approaches. The microbial inocula consisted of a wild type (WT) Rhizobium meliloti strain, the arbuscular mycorrhizal (AM) fungus Glomus mosseae (Nicol. and Gerd.) Gerd. and Trappe, and a phosphate solubilizing rhizobacterium (Enterobacter sp.). Inoculated microorganisms were established in the root tissues and/or in the rhizosphere soil of alfalfa plants (Medicago sativa L.). Improvements in N and P accumulation in alfalfa corroborate beneficial effects of Rhizobium and AM interactions. Inoculation with selected rhizobacteria improved the AM effect on N or P accumulation in both the RP-added soil and in the non RP-amended controls. Measurements of the 15N/14N ratio in plant shoots indicate an enhancement of the N2 fixation rates in Rhizobium-inoculated AM-plants, over that achieved by Rhizobium in non-mycorrhizal plants. Whether or not RP was added, AM-inoculated plants showed a lower specific activity (32P/31P) than did their comparable non-mycorrhizal controls, suggesting that the plant was using otherwise unavailable P sources. The phosphate-solubilizing, AM-associated, microbiota could in fact release phosphate ions, either from the added RP or from the indigenous ``less-available'' soil phosphate. A low Ca concentrations in the test soil may have benefited P solubilization. Under field conditions, the inoculation with AM fungi significantly increased plant biomass and N and P accumulation in plant tissues. Phosphate-solubilizing rhizobacteria improved mycorrhizal responses in soil dually receiving RP and organic matter amendments. Organic matter addition favoured RP solubilization. This, together with a tailored microbial inoculation, increased the agronomic efficiency of RP in the test soil that was Ca deficient at neutral pH. | es_ES |
dc.description.sponsorship | The authors thank the Joint FAO/IAEA Division, United Nations, Vienna (Phosphate CRP), particularly Dr. F. Zapata for his comments and advice, and the EC Biotechnology Programme, IMPACT Project BIO4-CT96-0027. | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | Springer Nature | es_ES |
dc.rights | closedAccess | es_ES |
dc.title | The application of isotopic (32P and 15N) dilution techniques to evaluate the interactive effect of phosphate-solubilizing rhizobacteria, mycorrhizal fungi and Rhizobium to improve the agronomic efficiency of rock phosphate for legume crops | es_ES |
dc.type | artículo | es_ES |
dc.identifier.doi | 10.1023/A:1020589732436 | - |
dc.description.peerreviewed | Peer reviewed | es_ES |
dc.relation.publisherversion | https://doi.org/10.1023/A:1020589732436 | es_ES |
dc.contributor.funder | European Commission | es_ES |
dc.relation.csic | Sí | es_ES |
oprm.item.hasRevision | no ko 0 false | * |
dc.identifier.funder | http://dx.doi.org/10.13039/501100000780 | es_ES |
dc.type.coar | http://purl.org/coar/resource_type/c_6501 | es_ES |
item.cerifentitytype | Publications | - |
item.languageiso639-1 | en | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.grantfulltext | none | - |
item.fulltext | No Fulltext | - |
item.openairetype | artículo | - |
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