TOTAL AND ORGANIC PHOSPHORUS IN CHILEAN VOLCANIC SOILS

This paper reviews the literature related to total and organic P (Po) levels present in both agricultural and forest soils from southern Chile. Different reports have demonstrated the high contents of total P (Pt) found in agricultural soils (1,000-3,000 mg kg-1) even in unfertilized soils. In most...

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Autores principales:	Borie,F., Rubio,R.
Lenguaje:	English
Publicado:	Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción 2003
Materias:	Agricultural and forest soils organic phosphorus P availability total phosphorus volcanic soils
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432003000100011
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spelling	oai:scielo:S0717-664320030001000112004-02-04TOTAL AND ORGANIC PHOSPHORUS IN CHILEAN VOLCANIC SOILSBorie,F.Rubio,R. Agricultural and forest soils organic phosphorus P availability total phosphorus volcanic soils This paper reviews the literature related to total and organic P (Po) levels present in both agricultural and forest soils from southern Chile. Different reports have demonstrated the high contents of total P (Pt) found in agricultural soils (1,000-3,000 mg kg-1) even in unfertilized soils. In most soils Po represents more than 50% of Pt, mainly as inositol penta- and hexaphosphates linked to Fe and/or Al. Lipid-P has been found in very small quantities suggesting very fast cycling. When phosphate fertilizers are applied to these soils, the bulk of P is accumulated as macromolecular-P complexes closely associated with soil organic matter. Close relationships have been found between organic C and Po and between Po and P associated with humic acids (HA-P). When applying Hedley's chemical fractionation procedure to these soils some significant P fractions or pools of high lability are obtained suggesting a potential plant availability of some forms of accumulated P, which can be manipulated by agricultural management. On the other hand, Pt in forest soils has been found in smaller quantities than in agricultural soils but Po also represents more than 50% of total P. The higher levels of labile P found in forest soils in comparison to agricultural ones together to higher C/Po ratios are suggesting a faster P cycling in forest ecosystemsinfo:eu-repo/semantics/openAccessFacultad de Ciencias Naturales y Oceanográficas, Universidad de ConcepciónGayana. Botánica v.60 n.1 20032003-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432003000100011en10.4067/S0717-66432003000100011
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Agricultural and forest soils organic phosphorus P availability total phosphorus volcanic soils
spellingShingle	Agricultural and forest soils organic phosphorus P availability total phosphorus volcanic soils Borie,F. Rubio,R. TOTAL AND ORGANIC PHOSPHORUS IN CHILEAN VOLCANIC SOILS
description	This paper reviews the literature related to total and organic P (Po) levels present in both agricultural and forest soils from southern Chile. Different reports have demonstrated the high contents of total P (Pt) found in agricultural soils (1,000-3,000 mg kg-1) even in unfertilized soils. In most soils Po represents more than 50% of Pt, mainly as inositol penta- and hexaphosphates linked to Fe and/or Al. Lipid-P has been found in very small quantities suggesting very fast cycling. When phosphate fertilizers are applied to these soils, the bulk of P is accumulated as macromolecular-P complexes closely associated with soil organic matter. Close relationships have been found between organic C and Po and between Po and P associated with humic acids (HA-P). When applying Hedley's chemical fractionation procedure to these soils some significant P fractions or pools of high lability are obtained suggesting a potential plant availability of some forms of accumulated P, which can be manipulated by agricultural management. On the other hand, Pt in forest soils has been found in smaller quantities than in agricultural soils but Po also represents more than 50% of total P. The higher levels of labile P found in forest soils in comparison to agricultural ones together to higher C/Po ratios are suggesting a faster P cycling in forest ecosystems
author	Borie,F. Rubio,R.
author_facet	Borie,F. Rubio,R.
author_sort	Borie,F.
title	TOTAL AND ORGANIC PHOSPHORUS IN CHILEAN VOLCANIC SOILS
title_short	TOTAL AND ORGANIC PHOSPHORUS IN CHILEAN VOLCANIC SOILS
title_full	TOTAL AND ORGANIC PHOSPHORUS IN CHILEAN VOLCANIC SOILS
title_fullStr	TOTAL AND ORGANIC PHOSPHORUS IN CHILEAN VOLCANIC SOILS
title_full_unstemmed	TOTAL AND ORGANIC PHOSPHORUS IN CHILEAN VOLCANIC SOILS
title_sort	total and organic phosphorus in chilean volcanic soils
publisher	Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción
publishDate	2003
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432003000100011
work_keys_str_mv	AT borief totalandorganicphosphorusinchileanvolcanicsoils AT rubior totalandorganicphosphorusinchileanvolcanicsoils
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TOTAL AND ORGANIC PHOSPHORUS IN CHILEAN VOLCANIC SOILS

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