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dc.contributor.author
Fernandez Lopez, Carolina
dc.contributor.author
Mendoza, Rodolfo Ernesto
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dc.date.available
2015-07-01T20:04:56Z
dc.date.issued
2013-11
dc.identifier.citation
Fernandez Lopez, Carolina; Mendoza, Rodolfo Ernesto; Added phosphorus availability and re-distribution in both natural and cultivated vertisols; Asociación Argentina de la Ciencia del Suelo; Ciencia del Suelo; 31; 2; 11-2013; 143-152
dc.identifier.issn
0326-3169
dc.identifier.uri
http://hdl.handle.net/11336/996
dc.description.abstract
The fates of both native and added phosphorus were studied in a Leptic Hapludert, by Hedley´s fractionation method. The objectives of this study were to: a) assess the reaction of a natural grassland and a cultivated grassland in a Vertisol with added P by fertilization; b) to study the association between inorganic and organic P labile, moderately labile or non-labile forms with P availability for ryegrass growth; c) to test whether ryegrass growth may reflect the effect of a release of P from the soil with the incubation. Soil samples were taken from: a) Natural soil and, b) Cultivated soil that had been fertilized with 120 kg ha-1 yr-1 of TSP. In the laboratory, one group of samples was fertilized with P (0-200 mg P kg-1) and then incubated 25 days at 28 oC. The other group was also fertilized with P but was not incubated. After P fractionation,, ryegrass was grown in a greenhouse 45 days and the dry yield of shoots was measured. Inorganic labile P forms increased with the level of added P in both soils, and these forms were closely associated with ryegrass growth. The inorganic resistant P forms also increased with the level of added P in both soils, but more P was removed from the incubated samples suggesting that part of the added P was redistributed during the incubation. For both soils, the organic labile P decreased with the level of addition in the incubated samples but increased in the non-incubated samples. The organic more resistant P forms did not differ between the natural and cultivated soil and did not show a consistent distribution with added P or incubation. This suggests that these P forms had little influence on P availability in short or medium periods of reaction between soil and P.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Asociación Argentina de la Ciencia del Suelo
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Cambios de Formas de Fósforo
dc.subject
Fracciones de Fosforo
dc.subject
Rye Grass
dc.subject.classification
Ciencias Agrícolas
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dc.subject.classification
Otras Ciencias Agrícolas
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dc.subject.classification
Otras Ciencias Agrícolas
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dc.title
Added phosphorus availability and re-distribution in both natural and cultivated vertisols
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2016-03-30 10:35:44.97925-03
dc.journal.volume
31
dc.journal.number
2
dc.journal.pagination
143-152
dc.journal.pais
Argentina
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dc.journal.ciudad
Buenos Aires
dc.description.fil
Fil: Fernandez Lopez, Carolina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales; Argentina; Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias; Argentina;
dc.description.fil
Fil: Mendoza, Rodolfo Ernesto. Museo Argentino de Ciencias Naturales; Argentina;
dc.journal.title
Ciencia del Suelo
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.scielo.org.ar/scielo.php?pid=S1850-20672013000200001&script=sci_arttext
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