Soil Solution as Affected by Plant Residues and Nitrogen Rates

Página do item simplificado
dc.contributor.authorRosolem, Ciro Antonio [UNESP]
dc.contributor.authorda Silva, Rosemary Helena [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T13:20:09Z
dc.date.available2014-05-20T13:20:09Z
dc.date.issued2010-01-01
dc.description.abstractCation mobility in acidic soils with low organic-matter contents depends not only on sorption intensity but also on the solubility of the species present in soil solution. In general, the following leaching gradient is observed: potassium (K+) magnesium (Mg2+) calcium (Ca2+) aluminum (Al3+). To minimize nutrient losses and ameliorate the subsoil, soil solution must be changed, favoring higher mobility of M2+ (metal ions) forms. This would be theoretically possible if plant residues were kept on the soil surface. An experiment was conducted in pots containing a Distroferric Red Latosol, with soil solution extractors installed at two depths. Pearl millet, black oat, and oilseed radish residues were laid on the soil surface, and nitrogen (as ammonium nitrate) was applied at rates ranging from 0 to 150mgkg-1. Corn was grown for 52 days. Except for K+ and ammonium (NH4 +), nitrogen rates and plant residues had little effect upon the concentrations and forms of the elements in the soil solution. Presence of cover crop residues on soil surface decreased the effect of nitrogen fertilizer on Ca leaching. More than 90% of the Ca2+, Mg2+, and K+ were found as free ions. The Al3+ was almost totally complexed as Al(OH3)0. Nitrogen application increased the concentrations of almost all the ions in soil solution, including Al3+, although there was no modification in the leaching gradient.en
dc.description.affiliationSão Paulo State Univ, Coll Agr Sci, Dept Crop Sci, BR-18603970 Botucatu, SP, Brazil
dc.description.affiliationUnespSão Paulo State Univ, Coll Agr Sci, Dept Crop Sci, BR-18603970 Botucatu, SP, Brazil
dc.format.extent13-28
dc.identifierhttp://dx.doi.org/10.1080/00103620903360254
dc.identifier.citationCommunications In Soil Science and Plant Analysis. Philadelphia: Taylor & Francis Inc, v. 41, n. 1, p. 13-28, 2010.
dc.identifier.doi10.1080/00103620903360254
dc.identifier.issn0010-3624
dc.identifier.lattes5720775873259528
dc.identifier.orcid0000-0003-2001-0874
dc.identifier.urihttp://hdl.handle.net/11449/5531
dc.identifier.wosWOS:000274286300002
dc.language.isoeng
dc.publisherTaylor & Francis Inc
dc.relation.ispartofCommunications in Soil Science and Plant Analysis
dc.relation.ispartofjcr0.540
dc.relation.ispartofsjr0,341
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectIon speciationen
dc.subjectleachingen
dc.subjectlimingen
dc.subjectno-tillen
dc.titleSoil Solution as Affected by Plant Residues and Nitrogen Ratesen
dc.typeArtigo
dcterms.licensehttp://journalauthors.tandf.co.uk/permissions/reusingOwnWork.asp
dcterms.rightsHolderTaylor & Francis Inc
unesp.author.lattes5720775873259528[1]
unesp.author.orcid0000-0003-2001-0874[1]
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Ciências Agronômicas, Botucatupt
unesp.departmentProdução e Melhoramento Vegetal - FCApt

Arquivos

Licença do Pacote
Agora exibindo 1 - 2 de 2
Nenhuma Miniatura disponível
Nome:
license.txt
Tamanho:
1.71 KB
Formato:
Item-specific license agreed upon to submission
Descrição:
Nenhuma Miniatura disponível
Nome:
license.txt
Tamanho:
1.71 KB
Formato:
Item-specific license agreed upon to submission
Descrição:

Coleções

Botucatu - FCA - Faculdade de Ciências Agronômicas