Lime and phosphogypsum application and sulfate retention in subtropical soils under no-till system

This study reports long- and medium-term effects of the application of up to 12 Mg ha-1 of phosphogypsum (PG) as soil conditioner and source of Ca and S, in two field trials, conducted under no-till systems. One field trial was located in Ponta Grossa, state of Paraná (PR), Brazil, on a loamy Oxisol...

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Autores principales:	Churka Blum,S, Caires,E. F, Alleoni,L. R. F
Lenguaje:	English
Publicado:	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo 2013
Materias:	sulfur soil acidity sulfate adsorption weathered soil subsoil acidity cereal crops
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162013000200004
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spelling	oai:scielo:S0718-951620130002000042013-09-09Lime and phosphogypsum application and sulfate retention in subtropical soils under no-till systemChurka Blum,SCaires,E. FAlleoni,L. R. F sulfur soil acidity sulfate adsorption weathered soil subsoil acidity cereal crops This study reports long- and medium-term effects of the application of up to 12 Mg ha-1 of phosphogypsum (PG) as soil conditioner and source of Ca and S, in two field trials, conducted under no-till systems. One field trial was located in Ponta Grossa, state of Paraná (PR), Brazil, on a loamy Oxisol, which received lime and PG applications in 1993. Another area of study was located in Guarapuava (PR), on a clayey Oxisol,which received PG in 2005. After thirteen years of surface-applied lime on the loamy Oxisol, we observed soil acidity reduction up to 80 cm depth, while PG effects Ca²+ and S-SO4(2-)contents were more pronounced at deeper soil layers. Sulfate distribution in soil profiles was mostly correlated with Fe d and Fe d-Fe o. However, there was no long-term effect of lime and PG additions on no-till maize (Zea mays) and wheat (Triticum aestivum) yields. An appreciable movement of SO4(2-)-S to the subsoil was observed in soil samples from the clayey Oxisol after surface-applied PG. This was observed even in the medium term (3.5 years) and despite the higher adsorption capacity of sulfate. In this case, PG addition had positive benefits on maize and triticale (X Triticosecale) yields due to the supply of Ca²+ and SO4-2-S to the plants.info:eu-repo/semantics/openAccessChilean Society of Soil Science / Sociedad Chilena de la Ciencia del SueloJournal of soil science and plant nutrition v.13 n.2 20132013-06-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162013000200004en10.4067/S0718-95162013005000024
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	sulfur soil acidity sulfate adsorption weathered soil subsoil acidity cereal crops
spellingShingle	sulfur soil acidity sulfate adsorption weathered soil subsoil acidity cereal crops Churka Blum,S Caires,E. F Alleoni,L. R. F Lime and phosphogypsum application and sulfate retention in subtropical soils under no-till system
description	This study reports long- and medium-term effects of the application of up to 12 Mg ha-1 of phosphogypsum (PG) as soil conditioner and source of Ca and S, in two field trials, conducted under no-till systems. One field trial was located in Ponta Grossa, state of Paraná (PR), Brazil, on a loamy Oxisol, which received lime and PG applications in 1993. Another area of study was located in Guarapuava (PR), on a clayey Oxisol,which received PG in 2005. After thirteen years of surface-applied lime on the loamy Oxisol, we observed soil acidity reduction up to 80 cm depth, while PG effects Ca²+ and S-SO4(2-)contents were more pronounced at deeper soil layers. Sulfate distribution in soil profiles was mostly correlated with Fe d and Fe d-Fe o. However, there was no long-term effect of lime and PG additions on no-till maize (Zea mays) and wheat (Triticum aestivum) yields. An appreciable movement of SO4(2-)-S to the subsoil was observed in soil samples from the clayey Oxisol after surface-applied PG. This was observed even in the medium term (3.5 years) and despite the higher adsorption capacity of sulfate. In this case, PG addition had positive benefits on maize and triticale (X Triticosecale) yields due to the supply of Ca²+ and SO4-2-S to the plants.
author	Churka Blum,S Caires,E. F Alleoni,L. R. F
author_facet	Churka Blum,S Caires,E. F Alleoni,L. R. F
author_sort	Churka Blum,S
title	Lime and phosphogypsum application and sulfate retention in subtropical soils under no-till system
title_short	Lime and phosphogypsum application and sulfate retention in subtropical soils under no-till system
title_full	Lime and phosphogypsum application and sulfate retention in subtropical soils under no-till system
title_fullStr	Lime and phosphogypsum application and sulfate retention in subtropical soils under no-till system
title_full_unstemmed	Lime and phosphogypsum application and sulfate retention in subtropical soils under no-till system
title_sort	lime and phosphogypsum application and sulfate retention in subtropical soils under no-till system
publisher	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo
publishDate	2013
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162013000200004
work_keys_str_mv	AT churkablums limeandphosphogypsumapplicationandsulfateretentioninsubtropicalsoilsundernotillsystem AT cairesef limeandphosphogypsumapplicationandsulfateretentioninsubtropicalsoilsundernotillsystem AT alleonilrf limeandphosphogypsumapplicationandsulfateretentioninsubtropicalsoilsundernotillsystem
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Lime and phosphogypsum application and sulfate retention in subtropical soils under no-till system

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