Residual value of the phosphate added to ecuadorian and chilean soils with different phosphorus retention capacity

Abstract: The residual value of phosphorus addition is described by two reactions: a quick initial reaction followed by a slower reaction over time. In this study, the residual effect of two P sources was evaluated: monopotassium phosphate (MKP) and triple superphosphate (TSP) added to soils from Ec...

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Autores principales:	Vásconez,Gregorio, Pinochet,Dante
Lenguaje:	English
Publicado:	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo 2018
Materias:	Phosphate Olsen-P triple superphosphate residual effect volcanic soils
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162018000100060
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spelling	oai:scielo:S0718-951620180001000602018-11-21Residual value of the phosphate added to ecuadorian and chilean soils with different phosphorus retention capacityVásconez,GregorioPinochet,Dante Phosphate Olsen-P triple superphosphate residual effect volcanic soils Abstract: The residual value of phosphorus addition is described by two reactions: a quick initial reaction followed by a slower reaction over time. In this study, the residual effect of two P sources was evaluated: monopotassium phosphate (MKP) and triple superphosphate (TSP) added to soils from Ecuador and Chile with contrasting soil P retention capacity. Olsen-P extractability was measured and compared in soil samples 1, 2, 4, 8, 15, 45, 90, 180 and 360 days after the addition. The Olsen-P extracted at 24 hours after the P addition varied among soils, and extracted between 10 and 66% of the P added depending upon the soil, with lower extraction values in soils with high P retention capacity. When the source was TSP, only approximately 70% of P was extracted compared to that extracted when MKP was added. After the phosphate addition there was a clear initial effect followed by a progressive loss of Olsen-P extractability. Furthermore, over time, a state of quasi-equilibrium or a stationary state become evident in which the loss of P extractability was minimal. When the initial effect was removed, as a point that characterizes different types of soils, the loss of P extractability was similar among soils, and reflects the amount of phosphate added despite the type of fertilizer used.info:eu-repo/semantics/openAccessChilean Society of Soil Science / Sociedad Chilena de la Ciencia del SueloJournal of soil science and plant nutrition v.18 n.1 20182018-03-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162018000100060en10.4067/S0718-95162018005000301
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Phosphate Olsen-P triple superphosphate residual effect volcanic soils
spellingShingle	Phosphate Olsen-P triple superphosphate residual effect volcanic soils Vásconez,Gregorio Pinochet,Dante Residual value of the phosphate added to ecuadorian and chilean soils with different phosphorus retention capacity
description	Abstract: The residual value of phosphorus addition is described by two reactions: a quick initial reaction followed by a slower reaction over time. In this study, the residual effect of two P sources was evaluated: monopotassium phosphate (MKP) and triple superphosphate (TSP) added to soils from Ecuador and Chile with contrasting soil P retention capacity. Olsen-P extractability was measured and compared in soil samples 1, 2, 4, 8, 15, 45, 90, 180 and 360 days after the addition. The Olsen-P extracted at 24 hours after the P addition varied among soils, and extracted between 10 and 66% of the P added depending upon the soil, with lower extraction values in soils with high P retention capacity. When the source was TSP, only approximately 70% of P was extracted compared to that extracted when MKP was added. After the phosphate addition there was a clear initial effect followed by a progressive loss of Olsen-P extractability. Furthermore, over time, a state of quasi-equilibrium or a stationary state become evident in which the loss of P extractability was minimal. When the initial effect was removed, as a point that characterizes different types of soils, the loss of P extractability was similar among soils, and reflects the amount of phosphate added despite the type of fertilizer used.
author	Vásconez,Gregorio Pinochet,Dante
author_facet	Vásconez,Gregorio Pinochet,Dante
author_sort	Vásconez,Gregorio
title	Residual value of the phosphate added to ecuadorian and chilean soils with different phosphorus retention capacity
title_short	Residual value of the phosphate added to ecuadorian and chilean soils with different phosphorus retention capacity
title_full	Residual value of the phosphate added to ecuadorian and chilean soils with different phosphorus retention capacity
title_fullStr	Residual value of the phosphate added to ecuadorian and chilean soils with different phosphorus retention capacity
title_full_unstemmed	Residual value of the phosphate added to ecuadorian and chilean soils with different phosphorus retention capacity
title_sort	residual value of the phosphate added to ecuadorian and chilean soils with different phosphorus retention capacity
publisher	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo
publishDate	2018
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162018000100060
work_keys_str_mv	AT vasconezgregorio residualvalueofthephosphateaddedtoecuadorianandchileansoilswithdifferentphosphorusretentioncapacity AT pinochetdante residualvalueofthephosphateaddedtoecuadorianandchileansoilswithdifferentphosphorusretentioncapacity
_version_	1714206570226647040

Residual value of the phosphate added to ecuadorian and chilean soils with different phosphorus retention capacity

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