Dinâmica do fósforo em ecossistema de pastagem natural submetido à aplicação de fontes de fosfato
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Biblioteca Digital de Teses e Dissertações do UFSM |
Texto Completo: | http://repositorio.ufsm.br/handle/1/5543 |
Resumo: | The knowledge of P dynamics in grassland ecosystems may be important to prescription of changes caused by the addition of different sources of phosphate fertilizers in the P forms of soil, dry matter production and botanical composition of natural grasslands. The objective of this work was to evaluate the dynamics of P (a) the availability and forms of P; (b) total dry matter and contributions in dry matter and (c) dilution curves of P content from tissue of main species of natural grasslands after the application of different phosphate sources in three soil types under natural grasslands with or without historical of P applications. Treatments were P applications as Gafsa rock phosphate, simple superphosphate, triple superphosphate and control, arranged in randomized blocks with three replicates. In two experiments located in the city of Candiota - RS (Ultisol and Entisol), 100 kg ha-1 P2O5 were applied in September 2010. In the experiment of Santa Maria - RS (Alfisol), 180, 90, 100 e 100 kg ha-1 P2O5 were applied in 1997, 1998, 2002 and 2010, respectively, which represent 470 kg ha-1 P2O5. The soil samples (0-10 cm) and herbage mass were evaluated in the spring and summer after applied the last treatment in each experiment. The Gafsa rock phosphate showed a potential to increase P availability in soils with low calcium content in natural grasslands, but increases were higher when superphosphate was used. The application of phosphate fertilizers in soils under grasslands increases the importance of inorganic fractions of labile P to the available P to plants, making them less dependent on the mineralization of organic fractions. The P fertilization response was higher where annual species occurrence prevailed. In pastures with historical of fertilization, contribution of main species to the total dry mass of pasture had changed. In Candiota city, species did not grow by a severe drought. In Santa Maria, species as Paspalum notatum, Aristida laevis and other plants aggregated as Other Species had increased biomass and P tissue content was diluted over the periods. The specie Eustachys ulignosa had responded in biomass to soluble phosphate additions. The evaluated phosphates sources did not alter the N content in the tissue of grassland species. |
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2017-07-042017-07-042012-01-09OLIVEIRA, Leandro Bittencourt de. Phosphorus dynamics in natural grassland ecosystem submitted to application of phosphate sources. 2012. 86 f. Dissertação (Mestrado em Agronomia) - Universidade Federal de Santa Maria, Santa Maria, 2012.http://repositorio.ufsm.br/handle/1/5543The knowledge of P dynamics in grassland ecosystems may be important to prescription of changes caused by the addition of different sources of phosphate fertilizers in the P forms of soil, dry matter production and botanical composition of natural grasslands. The objective of this work was to evaluate the dynamics of P (a) the availability and forms of P; (b) total dry matter and contributions in dry matter and (c) dilution curves of P content from tissue of main species of natural grasslands after the application of different phosphate sources in three soil types under natural grasslands with or without historical of P applications. Treatments were P applications as Gafsa rock phosphate, simple superphosphate, triple superphosphate and control, arranged in randomized blocks with three replicates. In two experiments located in the city of Candiota - RS (Ultisol and Entisol), 100 kg ha-1 P2O5 were applied in September 2010. In the experiment of Santa Maria - RS (Alfisol), 180, 90, 100 e 100 kg ha-1 P2O5 were applied in 1997, 1998, 2002 and 2010, respectively, which represent 470 kg ha-1 P2O5. The soil samples (0-10 cm) and herbage mass were evaluated in the spring and summer after applied the last treatment in each experiment. The Gafsa rock phosphate showed a potential to increase P availability in soils with low calcium content in natural grasslands, but increases were higher when superphosphate was used. The application of phosphate fertilizers in soils under grasslands increases the importance of inorganic fractions of labile P to the available P to plants, making them less dependent on the mineralization of organic fractions. The P fertilization response was higher where annual species occurrence prevailed. In pastures with historical of fertilization, contribution of main species to the total dry mass of pasture had changed. In Candiota city, species did not grow by a severe drought. In Santa Maria, species as Paspalum notatum, Aristida laevis and other plants aggregated as Other Species had increased biomass and P tissue content was diluted over the periods. The specie Eustachys ulignosa had responded in biomass to soluble phosphate additions. The evaluated phosphates sources did not alter the N content in the tissue of grassland species.O conhecimento da dinâmica do fósforo nos ecossistemas campestres pode ser importante para a prescrição das alterações provocadas pela adição de diferentes fontes de fertilizantes fosfatados sobre as formas de P no solo, na produção de matéria seca e na composição botânica das pastagens naturais. O objetivo do presente trabalho foi avaliar a influência da dinâmica do P (a) na disponibilidade e formas de P no solo; (b) na massa total de forragem e as contribuições de massa seca e (c) curvas de diluição de P no tecido das principais espécies componentes das pastagens naturais submetidas à aplicação de diferentes fontes de fosfato em três solos com e sem histórico de fertilização fosfatada. Os tratamentos consistiram na aplicação de P nas formas de hiperfostado de Gafsa, superfosfato simples, superfosfato triplo e testemunha, arranjados em blocos casualizados com três repetições. Nos dois experimentos instalados em Candiota (Luvissolo Úmbrico e Neossolo Litólico), foram aplicados 100 kg ha-1 P2O5 em setembro de 2010. No experimento de Santa Maria (Argissolo Vermelho) foram aplicados 180, 90, 100 e 100 kg ha-1 P2O5 nos anos de 1997, 1998, 2002 e 2010, respectivamente, totalizando 470 kg ha-1 de P2O5. As coletas de solo (camada 0-10 cm) e as massas de forragem foram avaliadas no período primavera-verão, após a última aplicação dos tratamentos em cada experimento. O hiperfosfato de Gafsa demonstrou ter potencial de disponibilização de P em solos ácidos com baixo teor de cálcio sob pastagens naturais, mas a disponibilização de P obtida com os superfosfatos foi maior. A aplicação de fertilizantes fosfatados em solos pobres sob pastagens naturais aumenta a importância das frações inorgânicas lábeis de P na disponibilização de P para as plantas, tornando-as menos dependentes da mineralização das frações orgânicas. A resposta da pastagem natural à fertilização fosfatada foi maior onde havia significativa contribuição de espécies anuais. O histórico de adição de fertilizantes fosfatados solúveis alterou a contribuição das principais espécies na massa seca total das pastagens naturais. Em Candiota, as espécies não apresentaram crescimento em função de forte estiagem. Em Santa Maria, as espécies Paspalum notatum, Aristida laevis e o componente Outras Espécies aumentaram a biomassa aérea e diluíram P do tecido ao longo dos períodos avaliados. A espécie Eustachys ulignosa respondeu a adição de fosfato solúvel. As fontes de fosfatos avaliados não alteraram o teor de N no tecido das plantas.Coordenação de Aperfeiçoamento de Pessoal de Nível Superiorapplication/pdfporUniversidade Federal de Santa MariaPrograma de Pós-Graduação em Ciência do SoloUFSMBRAgronomiaEspécies campestresFertilização fosfatadaFormas de fósforoMassa seca de forragemDiluição do P no tecidoGrassland speciesPhosphorus fertilizationPhosphorus formsHerbage dry matterDilution of tissue PCNPQ::CIENCIAS AGRARIAS::AGRONOMIA::CIENCIA DO SOLODinâmica do fósforo em ecossistema de pastagem natural submetido à aplicação de fontes de fosfatoPhosphorus dynamics in natural grassland ecosystem submitted to application of phosphate sourcesinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisSantos, Danilo Rheinheimer doshttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4785480Z6Quadros, Fernando Luiz Ferreira dehttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4780560Z8Trindade, José Pedro Pereirahttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4768375Y0http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4437353H4Oliveira, Leandro Bittencourt de500100100005400500500500500b9323b09-6e9b-40be-8233-f9dbf499db3179e62291-037d-4024-8558-af7921d4084fd3953d2f-6c4f-4474-a8e8-37f17407955b5ce984f3-db81-494a-bd36-2a2a2ed37867info:eu-repo/semantics/openAccessreponame:Biblioteca Digital de Teses e Dissertações do UFSMinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSMORIGINALOLIVEIRA, LEANDRO BITTENCOURT.pdfapplication/pdf1370938http://repositorio.ufsm.br/bitstream/1/5543/1/OLIVEIRA%2c%20LEANDRO%20BITTENCOURT.pdf5a66d4983ba7db051fd296baa1a47756MD51TEXTOLIVEIRA, LEANDRO BITTENCOURT.pdf.txtOLIVEIRA, LEANDRO BITTENCOURT.pdf.txtExtracted texttext/plain178243http://repositorio.ufsm.br/bitstream/1/5543/2/OLIVEIRA%2c%20LEANDRO%20BITTENCOURT.pdf.txt88ff36fea56025507c71af1a17d7cf43MD52THUMBNAILOLIVEIRA, LEANDRO BITTENCOURT.pdf.jpgOLIVEIRA, LEANDRO BITTENCOURT.pdf.jpgIM Thumbnailimage/jpeg4957http://repositorio.ufsm.br/bitstream/1/5543/3/OLIVEIRA%2c%20LEANDRO%20BITTENCOURT.pdf.jpg256be7ef37539db658bcdb2561b89affMD531/55432022-07-04 11:55:12.706oai:repositorio.ufsm.br:1/5543Biblioteca Digital de Teses e Dissertaçõeshttps://repositorio.ufsm.br/ONGhttps://repositorio.ufsm.br/oai/requestatendimento.sib@ufsm.br||tedebc@gmail.comopendoar:2022-07-04T14:55:12Biblioteca Digital de Teses e Dissertações do UFSM - Universidade Federal de Santa Maria (UFSM)false |
dc.title.por.fl_str_mv |
Dinâmica do fósforo em ecossistema de pastagem natural submetido à aplicação de fontes de fosfato |
dc.title.alternative.eng.fl_str_mv |
Phosphorus dynamics in natural grassland ecosystem submitted to application of phosphate sources |
title |
Dinâmica do fósforo em ecossistema de pastagem natural submetido à aplicação de fontes de fosfato |
spellingShingle |
Dinâmica do fósforo em ecossistema de pastagem natural submetido à aplicação de fontes de fosfato Oliveira, Leandro Bittencourt de Espécies campestres Fertilização fosfatada Formas de fósforo Massa seca de forragem Diluição do P no tecido Grassland species Phosphorus fertilization Phosphorus forms Herbage dry matter Dilution of tissue P CNPQ::CIENCIAS AGRARIAS::AGRONOMIA::CIENCIA DO SOLO |
title_short |
Dinâmica do fósforo em ecossistema de pastagem natural submetido à aplicação de fontes de fosfato |
title_full |
Dinâmica do fósforo em ecossistema de pastagem natural submetido à aplicação de fontes de fosfato |
title_fullStr |
Dinâmica do fósforo em ecossistema de pastagem natural submetido à aplicação de fontes de fosfato |
title_full_unstemmed |
Dinâmica do fósforo em ecossistema de pastagem natural submetido à aplicação de fontes de fosfato |
title_sort |
Dinâmica do fósforo em ecossistema de pastagem natural submetido à aplicação de fontes de fosfato |
author |
Oliveira, Leandro Bittencourt de |
author_facet |
Oliveira, Leandro Bittencourt de |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Santos, Danilo Rheinheimer dos |
dc.contributor.advisor1Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4785480Z6 |
dc.contributor.referee1.fl_str_mv |
Quadros, Fernando Luiz Ferreira de |
dc.contributor.referee1Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4780560Z8 |
dc.contributor.referee2.fl_str_mv |
Trindade, José Pedro Pereira |
dc.contributor.referee2Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4768375Y0 |
dc.contributor.authorLattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4437353H4 |
dc.contributor.author.fl_str_mv |
Oliveira, Leandro Bittencourt de |
contributor_str_mv |
Santos, Danilo Rheinheimer dos Quadros, Fernando Luiz Ferreira de Trindade, José Pedro Pereira |
dc.subject.por.fl_str_mv |
Espécies campestres Fertilização fosfatada Formas de fósforo Massa seca de forragem Diluição do P no tecido |
topic |
Espécies campestres Fertilização fosfatada Formas de fósforo Massa seca de forragem Diluição do P no tecido Grassland species Phosphorus fertilization Phosphorus forms Herbage dry matter Dilution of tissue P CNPQ::CIENCIAS AGRARIAS::AGRONOMIA::CIENCIA DO SOLO |
dc.subject.eng.fl_str_mv |
Grassland species Phosphorus fertilization Phosphorus forms Herbage dry matter Dilution of tissue P |
dc.subject.cnpq.fl_str_mv |
CNPQ::CIENCIAS AGRARIAS::AGRONOMIA::CIENCIA DO SOLO |
description |
The knowledge of P dynamics in grassland ecosystems may be important to prescription of changes caused by the addition of different sources of phosphate fertilizers in the P forms of soil, dry matter production and botanical composition of natural grasslands. The objective of this work was to evaluate the dynamics of P (a) the availability and forms of P; (b) total dry matter and contributions in dry matter and (c) dilution curves of P content from tissue of main species of natural grasslands after the application of different phosphate sources in three soil types under natural grasslands with or without historical of P applications. Treatments were P applications as Gafsa rock phosphate, simple superphosphate, triple superphosphate and control, arranged in randomized blocks with three replicates. In two experiments located in the city of Candiota - RS (Ultisol and Entisol), 100 kg ha-1 P2O5 were applied in September 2010. In the experiment of Santa Maria - RS (Alfisol), 180, 90, 100 e 100 kg ha-1 P2O5 were applied in 1997, 1998, 2002 and 2010, respectively, which represent 470 kg ha-1 P2O5. The soil samples (0-10 cm) and herbage mass were evaluated in the spring and summer after applied the last treatment in each experiment. The Gafsa rock phosphate showed a potential to increase P availability in soils with low calcium content in natural grasslands, but increases were higher when superphosphate was used. The application of phosphate fertilizers in soils under grasslands increases the importance of inorganic fractions of labile P to the available P to plants, making them less dependent on the mineralization of organic fractions. The P fertilization response was higher where annual species occurrence prevailed. In pastures with historical of fertilization, contribution of main species to the total dry mass of pasture had changed. In Candiota city, species did not grow by a severe drought. In Santa Maria, species as Paspalum notatum, Aristida laevis and other plants aggregated as Other Species had increased biomass and P tissue content was diluted over the periods. The specie Eustachys ulignosa had responded in biomass to soluble phosphate additions. The evaluated phosphates sources did not alter the N content in the tissue of grassland species. |
publishDate |
2012 |
dc.date.issued.fl_str_mv |
2012-01-09 |
dc.date.accessioned.fl_str_mv |
2017-07-04 |
dc.date.available.fl_str_mv |
2017-07-04 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
OLIVEIRA, Leandro Bittencourt de. Phosphorus dynamics in natural grassland ecosystem submitted to application of phosphate sources. 2012. 86 f. Dissertação (Mestrado em Agronomia) - Universidade Federal de Santa Maria, Santa Maria, 2012. |
dc.identifier.uri.fl_str_mv |
http://repositorio.ufsm.br/handle/1/5543 |
identifier_str_mv |
OLIVEIRA, Leandro Bittencourt de. Phosphorus dynamics in natural grassland ecosystem submitted to application of phosphate sources. 2012. 86 f. Dissertação (Mestrado em Agronomia) - Universidade Federal de Santa Maria, Santa Maria, 2012. |
url |
http://repositorio.ufsm.br/handle/1/5543 |
dc.language.iso.fl_str_mv |
por |
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por |
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500100100005 |
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400 500 500 500 500 |
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b9323b09-6e9b-40be-8233-f9dbf499db31 79e62291-037d-4024-8558-af7921d4084f d3953d2f-6c4f-4474-a8e8-37f17407955b 5ce984f3-db81-494a-bd36-2a2a2ed37867 |
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info:eu-repo/semantics/openAccess |
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openAccess |
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Universidade Federal de Santa Maria |
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Programa de Pós-Graduação em Ciência do Solo |
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UFSM |
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BR |
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Agronomia |
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Universidade Federal de Santa Maria |
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