Fósforo em Planossolo cultivado com culturas de sequeiro e sua disponibilidade para o arroz subsequente em Plantio Direto.
Autor(a) principal: | |
---|---|
Data de Publicação: | 2009 |
Tipo de documento: | Tese |
Idioma: | por |
Título da fonte: | Repositório Institucional da UFPel - Guaiaca |
Texto Completo: | http://guaiaca.ufpel.edu.br/handle/123456789/2455 |
Resumo: | The general objective of this study was to evaluate the effect of the phosphorus fertilization and the availability of the phosphorus forms in irrigated rice under no tillage in Albaqualf soil cultivated on dryland crops mulch. The experiments installed in 2003 were conducted under a randomized blocks design with four replications. The treatments were disposed in 2 x 2 factorial (triple superphosphate - TSP) and Arad rock phosphate (ARP), with and without annual replication of P with TSF). Additionally, it was conducted a treatment under natural condition (without the application of the phosphorus fertilization). The soils collected from the layers: 0 - 10 cm and 0 - 20 cm were analyzed using the Mehlich-1 and anion-exchange resin methods. Soils collected from 0.0 - 2.5; 2.5 - 5.0 and 5.0 - 15.0 cm was used to evaluate the P fractions. Analysis of P concentration in flag leaves and shoot (leaves stalk and grain) were also evaluated. Total P accumulated was calculated from the shoot P concentration in relation to the dry matter. For the future analysis, the rice harvest was done when the plants were in physiological maturity stage. The phosphorus fertilization did not affect the production of rice grains; even though with initial P soil level below of the critical level (< 6.0 mg dm-3). The phosphorus fertilization applied to the dryland crops (maize and soybean) presented a residual effect to subsequent irrigated rice, even after four years of experiment under notillage management. For the irrigated rice no differences were shown between the results of P availability using the Mehlich-1 and anion-exchange resin methods. The P concentrations from the soils, using these two methods, presented significant correlations with the P accumulated in plants. The ARP presented similar performance as TSP regarding to the P nutrition in irrigated rice in rotation with dryland crops under no tillage. The P inorganic fractions that predominate in Albaqualf soil cultivated with maize and soybean under no tillage are extracted with 0.1 NaOH and 0.5 NaOH mol L-1. The fertilizations carried out annually with TSP and ARP had increased all the P inorganic fractions in soil. The organic fractions were not much affected by the phosphate fertilization. The P accumulated in shoot of rice plants was better correlated with the labile P fractions (anion-exchange resin, NaHCO3 and 0.1 NaOH mol L-1), mainly in the superficial layer (0.0 - 2.5 cm). |
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http://lattes.cnpq.br/8436228123807109http://lattes.cnpq.br/0190845387852451Vahl, Ledemar Carloshttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4727811D6Sousa, Rogerio Oliveira deFortes, Magali de Ávila2014-08-20T14:36:58Z2010-12-142014-08-20T14:36:58Z2009-03-20FORTES, Magali de Ávila. Fósforo em Planossolo cultivado com culturas de sequeiro e sua disponibilidade para o arroz subsequente em Plantio Direto. 2009. 132 f. Tese (Doutorado em Agronomia) - Universidade Federal de Pelotas, Pelotas, 2009.http://guaiaca.ufpel.edu.br/handle/123456789/2455The general objective of this study was to evaluate the effect of the phosphorus fertilization and the availability of the phosphorus forms in irrigated rice under no tillage in Albaqualf soil cultivated on dryland crops mulch. The experiments installed in 2003 were conducted under a randomized blocks design with four replications. The treatments were disposed in 2 x 2 factorial (triple superphosphate - TSP) and Arad rock phosphate (ARP), with and without annual replication of P with TSF). Additionally, it was conducted a treatment under natural condition (without the application of the phosphorus fertilization). The soils collected from the layers: 0 - 10 cm and 0 - 20 cm were analyzed using the Mehlich-1 and anion-exchange resin methods. Soils collected from 0.0 - 2.5; 2.5 - 5.0 and 5.0 - 15.0 cm was used to evaluate the P fractions. Analysis of P concentration in flag leaves and shoot (leaves stalk and grain) were also evaluated. Total P accumulated was calculated from the shoot P concentration in relation to the dry matter. For the future analysis, the rice harvest was done when the plants were in physiological maturity stage. The phosphorus fertilization did not affect the production of rice grains; even though with initial P soil level below of the critical level (< 6.0 mg dm-3). The phosphorus fertilization applied to the dryland crops (maize and soybean) presented a residual effect to subsequent irrigated rice, even after four years of experiment under notillage management. For the irrigated rice no differences were shown between the results of P availability using the Mehlich-1 and anion-exchange resin methods. The P concentrations from the soils, using these two methods, presented significant correlations with the P accumulated in plants. The ARP presented similar performance as TSP regarding to the P nutrition in irrigated rice in rotation with dryland crops under no tillage. The P inorganic fractions that predominate in Albaqualf soil cultivated with maize and soybean under no tillage are extracted with 0.1 NaOH and 0.5 NaOH mol L-1. The fertilizations carried out annually with TSP and ARP had increased all the P inorganic fractions in soil. The organic fractions were not much affected by the phosphate fertilization. The P accumulated in shoot of rice plants was better correlated with the labile P fractions (anion-exchange resin, NaHCO3 and 0.1 NaOH mol L-1), mainly in the superficial layer (0.0 - 2.5 cm).O objetivo geral deste estudo foi avaliar o efeito da adubação fosfatada e a disponibilidade das formas de fósforo para o arroz irrigado cultivado em Planossolo no sistema plantio direto, após o cultivo de culturas de sequeiro. Os experimentos foram conduzidos desde 2003, delineados em blocos ao acaso com quatro repetições e os tratamentos foram dispostos em um fatorial 2 x 2 (superfosfato triplo - SFT) e fosfato natural de Arad - FNA), com e sem reaplicação anual de P com SFT) mais um tratamento adicional testemunha sem a aplicação da adubação fosfatada. Foram coletadas amostras de solo em duas profundidades (0 - 10 cm e 0 - 20 cm), analisadas pelo método Mehlich-1 e resina de troca aniônica (RTA), e amostras de 0,0 - 2,5; 2,5 - 5,0 e 5,0 - 15,0 cm, analisadas pelo fracionamento de P. Nas plantas fez-se determinação da concentração de fósforo nas folhas bandeira e parte aérea (folhas, colmo e grãos) e quantidade total acumulada de P nas plantas, calculada a partir da concentração de fósforo na parte aérea em relação à massa de matéria seca. Foi realizada a colheita dos grãos após a maturação fisiológica para análise de rendimento. O rendimento de grãos de arroz não respondeu à adubação fosfatada, mesmo com teores inicias de P no solo abaixo do nível crítico (< 6,0 mg dm-3). A adubação fosfatada realizada nas culturas de sequeiro (milho e soja) apresentou um efeito residual para o arroz irrigado mesmo após quatro anos de cultivos destas, no sistema plantio direto. Os extratores Mehlich-1 e resina de troca aniônica foram igualmente eficientes na avaliação da disponibilidade de P para o arroz irrigado. Os teores de P extraídos do solo pelos dois métodos apresentaram correlações significativas com o P acumulado nas plantas. O fosfato natural de Arad apresenta desempenho semelhante ao superfosfato triplo no que se refere à nutrição por fósforo em arroz irrigado em rotação com culturas de sequeiro no sistema plantio direto. As frações de fósforo inorgânico que predominam em um Planossolo cultivado com as culturas de milho e soja em sistema plantio direto são as extraídas com NaOH 0,1 e NaOH 0,5 mol L-1. As adubações realizadas anualmente com superfosfato triplo e fosfato natural de Arad aumentaram todas as frações inorgânicas de fósforo no solo, desde as mais lábeis até as menos lábeis. As frações orgânicas apresentam-se pouco sensíveis à adubação fosfatada. As quantidades de fósforo acumuladas na parte aérea das plantas de arroz melhor se correlacionaram com as frações de fósforo mais lábeis (RTA, NaHCO3 e NaOH 0,1 mol L-1), principalmente na profundidade de 0,0 - 2,5 cm.application/pdfporUniversidade Federal de PelotasPrograma de Pós-Graduação em AgronomiaUFPelBRFaculdade de Agronomia Eliseu MacielFrações de fósforoAdubação fosfatadaEfeito residual de fósforoPhosphorus fractionsPhosphorus fertilizingResidual phosphorus effectCNPQ::CIENCIAS AGRARIAS::AGRONOMIAFósforo em Planossolo cultivado com culturas de sequeiro e sua disponibilidade para o arroz subsequente em Plantio Direto.Phosphorus in Albaqualf soil cultivated with dryland crops and its availability for the subsequent rice under no tillageinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesisinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFPel - Guaiacainstname:Universidade Federal de Pelotas (UFPEL)instacron:UFPELORIGINALTese_Magali_de_Avila_Fortes.pdfapplication/pdf728610http://guaiaca.ufpel.edu.br/xmlui/bitstream/123456789/2455/1/Tese_Magali_de_Avila_Fortes.pdffd451b6ee0f901a627e0fe08c27afe84MD51open accessTEXTTese_Magali_de_Avila_Fortes.pdf.txtTese_Magali_de_Avila_Fortes.pdf.txtExtracted Texttext/plain240302http://guaiaca.ufpel.edu.br/xmlui/bitstream/123456789/2455/2/Tese_Magali_de_Avila_Fortes.pdf.txtd9837583207dfe942c9902adf9ef6528MD52open accessTHUMBNAILTese_Magali_de_Avila_Fortes.pdf.jpgTese_Magali_de_Avila_Fortes.pdf.jpgGenerated Thumbnailimage/jpeg1311http://guaiaca.ufpel.edu.br/xmlui/bitstream/123456789/2455/3/Tese_Magali_de_Avila_Fortes.pdf.jpg03760fe9a31bdb98b26379dd95074293MD53open access123456789/24552023-05-15 19:33:10.811open accessoai:guaiaca.ufpel.edu.br:123456789/2455Repositório InstitucionalPUBhttp://repositorio.ufpel.edu.br/oai/requestrippel@ufpel.edu.br || repositorio@ufpel.edu.br || aline.batista@ufpel.edu.bropendoar:2023-05-15T22:33:10Repositório Institucional da UFPel - Guaiaca - Universidade Federal de Pelotas (UFPEL)false |
dc.title.por.fl_str_mv |
Fósforo em Planossolo cultivado com culturas de sequeiro e sua disponibilidade para o arroz subsequente em Plantio Direto. |
dc.title.alternative.eng.fl_str_mv |
Phosphorus in Albaqualf soil cultivated with dryland crops and its availability for the subsequent rice under no tillage |
title |
Fósforo em Planossolo cultivado com culturas de sequeiro e sua disponibilidade para o arroz subsequente em Plantio Direto. |
spellingShingle |
Fósforo em Planossolo cultivado com culturas de sequeiro e sua disponibilidade para o arroz subsequente em Plantio Direto. Fortes, Magali de Ávila Frações de fósforo Adubação fosfatada Efeito residual de fósforo Phosphorus fractions Phosphorus fertilizing Residual phosphorus effect CNPQ::CIENCIAS AGRARIAS::AGRONOMIA |
title_short |
Fósforo em Planossolo cultivado com culturas de sequeiro e sua disponibilidade para o arroz subsequente em Plantio Direto. |
title_full |
Fósforo em Planossolo cultivado com culturas de sequeiro e sua disponibilidade para o arroz subsequente em Plantio Direto. |
title_fullStr |
Fósforo em Planossolo cultivado com culturas de sequeiro e sua disponibilidade para o arroz subsequente em Plantio Direto. |
title_full_unstemmed |
Fósforo em Planossolo cultivado com culturas de sequeiro e sua disponibilidade para o arroz subsequente em Plantio Direto. |
title_sort |
Fósforo em Planossolo cultivado com culturas de sequeiro e sua disponibilidade para o arroz subsequente em Plantio Direto. |
author |
Fortes, Magali de Ávila |
author_facet |
Fortes, Magali de Ávila |
author_role |
author |
dc.contributor.authorLattes.por.fl_str_mv |
http://lattes.cnpq.br/8436228123807109 |
dc.contributor.advisorLattes.por.fl_str_mv |
http://lattes.cnpq.br/0190845387852451 |
dc.contributor.advisor-co1.fl_str_mv |
Vahl, Ledemar Carlos |
dc.contributor.advisor-co1Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4727811D6 |
dc.contributor.advisor1.fl_str_mv |
Sousa, Rogerio Oliveira de |
dc.contributor.author.fl_str_mv |
Fortes, Magali de Ávila |
contributor_str_mv |
Vahl, Ledemar Carlos Sousa, Rogerio Oliveira de |
dc.subject.por.fl_str_mv |
Frações de fósforo Adubação fosfatada Efeito residual de fósforo |
topic |
Frações de fósforo Adubação fosfatada Efeito residual de fósforo Phosphorus fractions Phosphorus fertilizing Residual phosphorus effect CNPQ::CIENCIAS AGRARIAS::AGRONOMIA |
dc.subject.eng.fl_str_mv |
Phosphorus fractions Phosphorus fertilizing Residual phosphorus effect |
dc.subject.cnpq.fl_str_mv |
CNPQ::CIENCIAS AGRARIAS::AGRONOMIA |
description |
The general objective of this study was to evaluate the effect of the phosphorus fertilization and the availability of the phosphorus forms in irrigated rice under no tillage in Albaqualf soil cultivated on dryland crops mulch. The experiments installed in 2003 were conducted under a randomized blocks design with four replications. The treatments were disposed in 2 x 2 factorial (triple superphosphate - TSP) and Arad rock phosphate (ARP), with and without annual replication of P with TSF). Additionally, it was conducted a treatment under natural condition (without the application of the phosphorus fertilization). The soils collected from the layers: 0 - 10 cm and 0 - 20 cm were analyzed using the Mehlich-1 and anion-exchange resin methods. Soils collected from 0.0 - 2.5; 2.5 - 5.0 and 5.0 - 15.0 cm was used to evaluate the P fractions. Analysis of P concentration in flag leaves and shoot (leaves stalk and grain) were also evaluated. Total P accumulated was calculated from the shoot P concentration in relation to the dry matter. For the future analysis, the rice harvest was done when the plants were in physiological maturity stage. The phosphorus fertilization did not affect the production of rice grains; even though with initial P soil level below of the critical level (< 6.0 mg dm-3). The phosphorus fertilization applied to the dryland crops (maize and soybean) presented a residual effect to subsequent irrigated rice, even after four years of experiment under notillage management. For the irrigated rice no differences were shown between the results of P availability using the Mehlich-1 and anion-exchange resin methods. The P concentrations from the soils, using these two methods, presented significant correlations with the P accumulated in plants. The ARP presented similar performance as TSP regarding to the P nutrition in irrigated rice in rotation with dryland crops under no tillage. The P inorganic fractions that predominate in Albaqualf soil cultivated with maize and soybean under no tillage are extracted with 0.1 NaOH and 0.5 NaOH mol L-1. The fertilizations carried out annually with TSP and ARP had increased all the P inorganic fractions in soil. The organic fractions were not much affected by the phosphate fertilization. The P accumulated in shoot of rice plants was better correlated with the labile P fractions (anion-exchange resin, NaHCO3 and 0.1 NaOH mol L-1), mainly in the superficial layer (0.0 - 2.5 cm). |
publishDate |
2009 |
dc.date.issued.fl_str_mv |
2009-03-20 |
dc.date.available.fl_str_mv |
2010-12-14 2014-08-20T14:36:58Z |
dc.date.accessioned.fl_str_mv |
2014-08-20T14:36:58Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/doctoralThesis |
format |
doctoralThesis |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
FORTES, Magali de Ávila. Fósforo em Planossolo cultivado com culturas de sequeiro e sua disponibilidade para o arroz subsequente em Plantio Direto. 2009. 132 f. Tese (Doutorado em Agronomia) - Universidade Federal de Pelotas, Pelotas, 2009. |
dc.identifier.uri.fl_str_mv |
http://guaiaca.ufpel.edu.br/handle/123456789/2455 |
identifier_str_mv |
FORTES, Magali de Ávila. Fósforo em Planossolo cultivado com culturas de sequeiro e sua disponibilidade para o arroz subsequente em Plantio Direto. 2009. 132 f. Tese (Doutorado em Agronomia) - Universidade Federal de Pelotas, Pelotas, 2009. |
url |
http://guaiaca.ufpel.edu.br/handle/123456789/2455 |
dc.language.iso.fl_str_mv |
por |
language |
por |
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info:eu-repo/semantics/openAccess |
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Universidade Federal de Pelotas |
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Programa de Pós-Graduação em Agronomia |
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UFPel |
dc.publisher.country.fl_str_mv |
BR |
dc.publisher.department.fl_str_mv |
Faculdade de Agronomia Eliseu Maciel |
publisher.none.fl_str_mv |
Universidade Federal de Pelotas |
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UFPEL |
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UFPEL |
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