Soil P Diffusion and Availability Modified by Controlled-Release P Fertilizers
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1007/s42729-020-00350-7 http://hdl.handle.net/11449/209692 |
Resumo: | Slow-release fertilizers have been proposed as tools to increase P fertilizer use efficiency in tropical acidic soils with high P adsorption, low P availability, and mobility. However, results have been controversial since soil diversity and the fertilizer itself may influence the results, which is not completely understood. Soil P diffusion and availability were studied in soils with different P fertilization histories, where triple superphosphate (TSP) and single superphosphate (SSP) coated with a polymer or with humic acid and complexed with humic acid were applied under laboratory conditions. No difference in soil P availability and diffusion was observed between humic acid-complexed, polymer, and humic acid-coated TSP and conventional TSP. For SSP, soil P availability was 15 to 30% lower in the region of application for the polymer and 0 to 16% for the humic-coated fertilizer. For the polymer-coated SSP, P diffusion was lower in some soils. With both base fertilizers, the soil adsorption capacity was more determinant of P diffusion than the protection of the fertilizers. Coating P fertilizers with polymer and complexing or coating the fertilizer with humic acid does not increase P availability or diffusivity in soil since these processes are driven mainly by the soil characteristics. Therefore, the potential of these controlled-release P fertilizers in increasing P use efficiency is low. |
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Soil P Diffusion and Availability Modified by Controlled-Release P FertilizersPhosphate fertilizerSlow releaseP adsorptionPolymerHumic acidSlow-release fertilizers have been proposed as tools to increase P fertilizer use efficiency in tropical acidic soils with high P adsorption, low P availability, and mobility. However, results have been controversial since soil diversity and the fertilizer itself may influence the results, which is not completely understood. Soil P diffusion and availability were studied in soils with different P fertilization histories, where triple superphosphate (TSP) and single superphosphate (SSP) coated with a polymer or with humic acid and complexed with humic acid were applied under laboratory conditions. No difference in soil P availability and diffusion was observed between humic acid-complexed, polymer, and humic acid-coated TSP and conventional TSP. For SSP, soil P availability was 15 to 30% lower in the region of application for the polymer and 0 to 16% for the humic-coated fertilizer. For the polymer-coated SSP, P diffusion was lower in some soils. With both base fertilizers, the soil adsorption capacity was more determinant of P diffusion than the protection of the fertilizers. Coating P fertilizers with polymer and complexing or coating the fertilizer with humic acid does not increase P availability or diffusivity in soil since these processes are driven mainly by the soil characteristics. Therefore, the potential of these controlled-release P fertilizers in increasing P use efficiency is low.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Western Sao Paulo Univ, Dept Agron, Rod Raposo Tavares,Km 572, BR-19067175 Presidente Prudente, SP, BrazilSao Paulo State Univ, Dept Crop Sci, Sch Agr Sci, Av Univ 3780, BR-18604034 Botucatu, SP, BrazilSao Paulo State Univ, Dept Crop Sci, Sch Agr Sci, Av Univ 3780, BR-18604034 Botucatu, SP, BrazilFAPESP: 2015/04200-0SpringerUniversidade de São Paulo (USP)Universidade Estadual Paulista (Unesp)Volf, Marcelo R.Rosolem, Ciro A. [UNESP]2021-06-25T12:26:07Z2021-06-25T12:26:07Z2020-11-24info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article162-172http://dx.doi.org/10.1007/s42729-020-00350-7Journal Of Soil Science And Plant Nutrition. Cham: Springer International Publishing Ag, v. 21, n. 1, p. 162-172, 2021.0718-9508http://hdl.handle.net/11449/20969210.1007/s42729-020-00350-7WOS:000592537100001Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal Of Soil Science And Plant Nutritioninfo:eu-repo/semantics/openAccess2024-04-30T15:56:41Zoai:repositorio.unesp.br:11449/209692Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-04-30T15:56:41Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Soil P Diffusion and Availability Modified by Controlled-Release P Fertilizers |
title |
Soil P Diffusion and Availability Modified by Controlled-Release P Fertilizers |
spellingShingle |
Soil P Diffusion and Availability Modified by Controlled-Release P Fertilizers Volf, Marcelo R. Phosphate fertilizer Slow release P adsorption Polymer Humic acid |
title_short |
Soil P Diffusion and Availability Modified by Controlled-Release P Fertilizers |
title_full |
Soil P Diffusion and Availability Modified by Controlled-Release P Fertilizers |
title_fullStr |
Soil P Diffusion and Availability Modified by Controlled-Release P Fertilizers |
title_full_unstemmed |
Soil P Diffusion and Availability Modified by Controlled-Release P Fertilizers |
title_sort |
Soil P Diffusion and Availability Modified by Controlled-Release P Fertilizers |
author |
Volf, Marcelo R. |
author_facet |
Volf, Marcelo R. Rosolem, Ciro A. [UNESP] |
author_role |
author |
author2 |
Rosolem, Ciro A. [UNESP] |
author2_role |
author |
dc.contributor.none.fl_str_mv |
Universidade de São Paulo (USP) Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Volf, Marcelo R. Rosolem, Ciro A. [UNESP] |
dc.subject.por.fl_str_mv |
Phosphate fertilizer Slow release P adsorption Polymer Humic acid |
topic |
Phosphate fertilizer Slow release P adsorption Polymer Humic acid |
description |
Slow-release fertilizers have been proposed as tools to increase P fertilizer use efficiency in tropical acidic soils with high P adsorption, low P availability, and mobility. However, results have been controversial since soil diversity and the fertilizer itself may influence the results, which is not completely understood. Soil P diffusion and availability were studied in soils with different P fertilization histories, where triple superphosphate (TSP) and single superphosphate (SSP) coated with a polymer or with humic acid and complexed with humic acid were applied under laboratory conditions. No difference in soil P availability and diffusion was observed between humic acid-complexed, polymer, and humic acid-coated TSP and conventional TSP. For SSP, soil P availability was 15 to 30% lower in the region of application for the polymer and 0 to 16% for the humic-coated fertilizer. For the polymer-coated SSP, P diffusion was lower in some soils. With both base fertilizers, the soil adsorption capacity was more determinant of P diffusion than the protection of the fertilizers. Coating P fertilizers with polymer and complexing or coating the fertilizer with humic acid does not increase P availability or diffusivity in soil since these processes are driven mainly by the soil characteristics. Therefore, the potential of these controlled-release P fertilizers in increasing P use efficiency is low. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-11-24 2021-06-25T12:26:07Z 2021-06-25T12:26:07Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1007/s42729-020-00350-7 Journal Of Soil Science And Plant Nutrition. Cham: Springer International Publishing Ag, v. 21, n. 1, p. 162-172, 2021. 0718-9508 http://hdl.handle.net/11449/209692 10.1007/s42729-020-00350-7 WOS:000592537100001 |
url |
http://dx.doi.org/10.1007/s42729-020-00350-7 http://hdl.handle.net/11449/209692 |
identifier_str_mv |
Journal Of Soil Science And Plant Nutrition. Cham: Springer International Publishing Ag, v. 21, n. 1, p. 162-172, 2021. 0718-9508 10.1007/s42729-020-00350-7 WOS:000592537100001 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Journal Of Soil Science And Plant Nutrition |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
162-172 |
dc.publisher.none.fl_str_mv |
Springer |
publisher.none.fl_str_mv |
Springer |
dc.source.none.fl_str_mv |
Web of Science reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1799964967498153984 |