Comparison between sulfates and chelated compounds as sources of zinc and iron in calcareous soils

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dc.contributor.authorOrtega Blu, Rodrigo
dc.contributor.authorMolina Roco, Mauricio
dc.date.accessioned2024-01-10T12:04:42Z
dc.date.available2024-01-10T12:04:42Z
dc.date.issued2007
dc.description.abstractPot experiments were performed in a greenhouse to compare zinc (Zn) and iron (Fe) sources: 1) corn plants were grown in a Zn-deficient soil and received a Zn fertilization (0, 1.9, 3.8, and 7.7 mg kg(-1); equivalent to 0, 5, 10, and 20 kg Zn ha(-1)) as Zn-EDTA and ZnSO4; 2) sorghum plants were grown in a soil where iron chlorosis symptoms had been observed and received a Fe fertilization (0, 1.5, 3, and 6 mg kg(-1); equivalent to 0, 3, 6, and 12 kg Fe ha(-1)) as Fe-EDDHA and FeSO4. Corn dry matter (DM), Zn concentration, and Zn uptake were higher with Zn-EDTA as compared to ZnSO4. In the sorghum experiment the highest DM production was obtained with Fe-EDDHA, which increased Fe concentration and uptake in higher proportion as compared to FeSO4. However, only highest Fe rates eliminated Fe chlorosis. Residual soil DTPA-extractable Zn and Fe levels were higher for chelates in comparison to sulfates; the largest differences between sources were found at the highest Zn and Fe rates. Although sulfates needed higher rates to achieve similar effects, their benefit/ cost relationship was higher than chelated sources due to their lower cost. However, factors such as the residual effect of each source, crop sensitivity, and the value of the crop should be also considered when choosing a Zn or Fe fertilizer source for similar soils.
dc.format.extent12 páginas
dc.fuente.origenWOS
dc.identifier.issn1405-3195
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/75862
dc.identifier.wosidWOS:000248292600002
dc.information.autorucAgronomía e Ing. Forestal;Molina-Roco M;S/I;13570
dc.information.autorucAgronomía e Ing. Forestal;Ortega-Blu R;S/I;1001182
dc.issue.numero5
dc.language.isoes
dc.nota.accesoSin adjunto
dc.pagina.final502
dc.pagina.inicio491
dc.publisherCOLEGIO POSTGRADUADOS
dc.revistaAGROCIENCIA
dc.rightsregistro bibliográfico
dc.subjectchelates
dc.subjectFe-EDDHA
dc.subjectFeSO4
dc.subjectmicronutrient availability
dc.subjectZn and Fe uptake
dc.subjectZn-EDTA
dc.subjectZnSO4
dc.subjectresidual micronutrients
dc.subjectFERTILIZERS
dc.subjectMANGANESE
dc.subjectCOPPER
dc.subjectACID
dc.subjectTRANSFORMATION
dc.subjectAVAILABILITY
dc.subjectBICARBONATE
dc.subjectDEFICIENCY
dc.subjectSOLUBILITY
dc.subjectCHLOROSIS
dc.subject.ods02 Zero Hunger
dc.subject.odspa02 Hambre cero
dc.titleComparison between sulfates and chelated compounds as sources of zinc and iron in calcareous soils
dc.typeartículo
dc.volumen41
sipa.codpersvinculados13570
sipa.codpersvinculados1001182
sipa.indexWOS
sipa.indexScopus
sipa.trazabilidadCarga SIPA;09-01-2024
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