IDENTIFICATION OF HYDROLOGICAL FACTORS CONTROLLING PHOSPHORUS CONCENTRATION IN DRAINAGE WATER IN SANDY SOILS

The relationship between total phosphorus (TP) and molybdate-reactive phosphorus (MRP) concentrations in subsurface drainage waters in the hydrological conditions prevailing during autumn and spring flow events was statistically analysed using multiple linear regression analysis. Data on hydrologica...

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Autores principales:	Salazar,Osvaldo, Wesstrom,Ingrid, Abraham,Joel
Lenguaje:	English
Publicado:	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo 2011
Materias:	Controlled drainage DRAINMOD Matrix flow Preferential flow Subsurface flow
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162011000200004
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id	oai:scielo:S0718-95162011000200004
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spelling	oai:scielo:S0718-951620110002000042011-07-21IDENTIFICATION OF HYDROLOGICAL FACTORS CONTROLLING PHOSPHORUS CONCENTRATION IN DRAINAGE WATER IN SANDY SOILSSalazar,OsvaldoWesstrom,IngridAbraham,Joel Controlled drainage DRAINMOD Matrix flow Preferential flow Subsurface flow The relationship between total phosphorus (TP) and molybdate-reactive phosphorus (MRP) concentrations in subsurface drainage waters in the hydrological conditions prevailing during autumn and spring flow events was statistically analysed using multiple linear regression analysis. Data on hydrological conditions in three drainage experimental plots in a loamy sand in south-east Sweden complemented with DRAINMOD-predicted data were used as independent variables. Regression models explained at least 80% of the variation in TP and MRP concentrations in drain outflow, based on adjusted coefficient of determination (R²adj) calculations. DRAINMOD-predicted cumulative infiltration (INFILcum) was identified as the most important hydrological condition controlling TP and MRP concentrations in drain outflow in three autumn events and in two out of three spring events. This suggests that the first infiltrating water found more soluble P forms available for transport, after which TP and MRP concentration in drainage outflows gradually decreased during the flow events.info:eu-repo/semantics/openAccessChilean Society of Soil Science / Sociedad Chilena de la Ciencia del SueloJournal of soil science and plant nutrition v.11 n.2 20112011-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162011000200004en10.4067/S0718-95162011000200004
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Controlled drainage DRAINMOD Matrix flow Preferential flow Subsurface flow
spellingShingle	Controlled drainage DRAINMOD Matrix flow Preferential flow Subsurface flow Salazar,Osvaldo Wesstrom,Ingrid Abraham,Joel IDENTIFICATION OF HYDROLOGICAL FACTORS CONTROLLING PHOSPHORUS CONCENTRATION IN DRAINAGE WATER IN SANDY SOILS
description	The relationship between total phosphorus (TP) and molybdate-reactive phosphorus (MRP) concentrations in subsurface drainage waters in the hydrological conditions prevailing during autumn and spring flow events was statistically analysed using multiple linear regression analysis. Data on hydrological conditions in three drainage experimental plots in a loamy sand in south-east Sweden complemented with DRAINMOD-predicted data were used as independent variables. Regression models explained at least 80% of the variation in TP and MRP concentrations in drain outflow, based on adjusted coefficient of determination (R²adj) calculations. DRAINMOD-predicted cumulative infiltration (INFILcum) was identified as the most important hydrological condition controlling TP and MRP concentrations in drain outflow in three autumn events and in two out of three spring events. This suggests that the first infiltrating water found more soluble P forms available for transport, after which TP and MRP concentration in drainage outflows gradually decreased during the flow events.
author	Salazar,Osvaldo Wesstrom,Ingrid Abraham,Joel
author_facet	Salazar,Osvaldo Wesstrom,Ingrid Abraham,Joel
author_sort	Salazar,Osvaldo
title	IDENTIFICATION OF HYDROLOGICAL FACTORS CONTROLLING PHOSPHORUS CONCENTRATION IN DRAINAGE WATER IN SANDY SOILS
title_short	IDENTIFICATION OF HYDROLOGICAL FACTORS CONTROLLING PHOSPHORUS CONCENTRATION IN DRAINAGE WATER IN SANDY SOILS
title_full	IDENTIFICATION OF HYDROLOGICAL FACTORS CONTROLLING PHOSPHORUS CONCENTRATION IN DRAINAGE WATER IN SANDY SOILS
title_fullStr	IDENTIFICATION OF HYDROLOGICAL FACTORS CONTROLLING PHOSPHORUS CONCENTRATION IN DRAINAGE WATER IN SANDY SOILS
title_full_unstemmed	IDENTIFICATION OF HYDROLOGICAL FACTORS CONTROLLING PHOSPHORUS CONCENTRATION IN DRAINAGE WATER IN SANDY SOILS
title_sort	identification of hydrological factors controlling phosphorus concentration in drainage water in sandy soils
publisher	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo
publishDate	2011
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162011000200004
work_keys_str_mv	AT salazarosvaldo identificationofhydrologicalfactorscontrollingphosphorusconcentrationindrainagewaterinsandysoils AT wesstromingrid identificationofhydrologicalfactorscontrollingphosphorusconcentrationindrainagewaterinsandysoils AT abrahamjoel identificationofhydrologicalfactorscontrollingphosphorusconcentrationindrainagewaterinsandysoils
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IDENTIFICATION OF HYDROLOGICAL FACTORS CONTROLLING PHOSPHORUS CONCENTRATION IN DRAINAGE WATER IN SANDY SOILS

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