Sistemas de culturas sob diferentes manejos por longa duração alteram as formas de fósforo do solo?
Autor(a) principal: | |
---|---|
Data de Publicação: | 2012 |
Tipo de documento: | Tese |
Idioma: | por |
Título da fonte: | Manancial - Repositório Digital da UFSM |
Texto Completo: | http://repositorio.ufsm.br/handle/1/3340 |
Resumo: | The thesis objective was to evaluate the forms of accumulation and release of phosphorus from cover crops waste under long time of different soil management systems and its relationship with the soil phosphorus forms. The experiment was established in 1986 on an Oxisol in the IAPAR experimental station in Pato Branco, Paraná State, Brazil. The treatments consisted of six winter cover crops (blue lupine, vetch, oats, radish, rye and wheat) and the winter fallow treatment, cultivated under no-tillage (NT) and conventional (CT). In September 2011 were collected soil samples (0-5 and 5-10 cm) and the shoots of winter cover crops. Confected litterbags (0.2 x 0.2 m) were collected at 7, 14, 28, 56 and 112 days after the cover crops management. In the residues collected, we assessed the accumulation of C, N, P, and held the fractionation of P. In the soil samples, we made the separation of aggregates by wet way and in the original soil and aggregates we evaluated the content of total C, N, P, the P forms, and the acid phosphatase activity. The distribution of P forms in the cover crops tissue varies among species and their accumulation was a function of nutrient soil P availability, as in NT. But for all of them, the soluble inorganic P was the principal storage form. The release of P from plant residues depends not only on its rate of decomposition, but also on the content of total and soluble P. The vetch and rye have great potential to recycle soil P, and this amount of P should be considered when prescribing phosphorus fertilization for the culture implanted in sequence. However, the long term cultivation of different winter cover crops did not affected the soil P forms in highly weathered clay soils, managed under NT and CT. On the other hand, practices that favor the accumulation of organic residues on the soil surface as the NT system, increase the acid phosphatase enzyme activity and labile organic and inorganic P forms, besides the formation of larger aggregates, which have higher levels of C, N, total P and organic labile P. |
id |
UFSM_bc231268c62fe37fdfd9faeaa947e5e0 |
---|---|
oai_identifier_str |
oai:repositorio.ufsm.br:1/3340 |
network_acronym_str |
UFSM |
network_name_str |
Manancial - Repositório Digital da UFSM |
repository_id_str |
|
spelling |
Sistemas de culturas sob diferentes manejos por longa duração alteram as formas de fósforo do solo?Can crop systems under long time of different soil management change the soil phosphorus forms?Rotação de culturasPlantas de coberturaBiociclagem de fósforoAgregação do soloCrop rotationCover cropsPhosphorus biocyclingSoil aggregationCNPQ::CIENCIAS AGRARIAS::AGRONOMIA::CIENCIA DO SOLOThe thesis objective was to evaluate the forms of accumulation and release of phosphorus from cover crops waste under long time of different soil management systems and its relationship with the soil phosphorus forms. The experiment was established in 1986 on an Oxisol in the IAPAR experimental station in Pato Branco, Paraná State, Brazil. The treatments consisted of six winter cover crops (blue lupine, vetch, oats, radish, rye and wheat) and the winter fallow treatment, cultivated under no-tillage (NT) and conventional (CT). In September 2011 were collected soil samples (0-5 and 5-10 cm) and the shoots of winter cover crops. Confected litterbags (0.2 x 0.2 m) were collected at 7, 14, 28, 56 and 112 days after the cover crops management. In the residues collected, we assessed the accumulation of C, N, P, and held the fractionation of P. In the soil samples, we made the separation of aggregates by wet way and in the original soil and aggregates we evaluated the content of total C, N, P, the P forms, and the acid phosphatase activity. The distribution of P forms in the cover crops tissue varies among species and their accumulation was a function of nutrient soil P availability, as in NT. But for all of them, the soluble inorganic P was the principal storage form. The release of P from plant residues depends not only on its rate of decomposition, but also on the content of total and soluble P. The vetch and rye have great potential to recycle soil P, and this amount of P should be considered when prescribing phosphorus fertilization for the culture implanted in sequence. However, the long term cultivation of different winter cover crops did not affected the soil P forms in highly weathered clay soils, managed under NT and CT. On the other hand, practices that favor the accumulation of organic residues on the soil surface as the NT system, increase the acid phosphatase enzyme activity and labile organic and inorganic P forms, besides the formation of larger aggregates, which have higher levels of C, N, total P and organic labile P.O objetivo desta tese foi avaliar as formas de acúmulo e liberação de fósforo dos resíduos de plantas de cobertura sob diferentes sistemas de manejo de solo por longa duração e sua relação com as formas de fósforo no solo. O experimento foi instalado em 1986 sobre um Latossolo Vermelho distroférrico da estação experimental do IAPAR em Pato Branco, estado do Paraná. Os tratamentos consistem em seis plantas de cobertura de inverno (tremoço azul, ervilhaca comum, aveia preta, nabo forrageiro, centeio e trigo) mais uma parcela que permanece em pousio no período de inverno, manejadas sob sistema plantio direto (SPD) e sistema de cultivo convencional (SCC). Em setembro de 2011, coletaram-se amostras de solo (0-5 e 5-10 cm) e da parte aérea das plantas de cobertura de inverno. Confeccionaram-se bolsas de decomposição (0,2 x 0,2m), que foram coletadas aos 7, 14, 28, 56 e 112 dias após o manejo das plantas de cobertura. Nos resíduos coletados, avaliou-se o acúmulo de C, N, P e o realizou-se o fracionamento do P. Nas amostras de solo, realizou-se a separação de agregados por via úmida e, no solo original e nos agregados, realizou-se a avaliação dos teores de C, N, P e o fracionamento de P, e da atividade de fosfatase ácida. A distribuição das formas de P no tecido das plantas de cobertura varia entre as espécies e a sua acumulação foi função da disponibilidade de P no solo. Mas, para todas elas, o P inorgânico solúvel foi a principal forma de armazenamento. A liberação de P dos resíduos das plantas de cobertura não depende apenas da sua taxa de decomposição, mas também do teor total e solúvel de P. A ervilhaca comum e o centeio possuem grande potencial para reciclar P do solo, sendo que essa quantidade de P deve ser considerada na prescrição da adubação fosfatada da cultura implantada em sequência. Contudo, o cultivo de plantas de cobertura de inverno por longo período não alterou as formas de P em solo argiloso altamente intemperizado, manejado sob SPD e sob SCC. Por outro lado, práticas que propiciem o acúmulo de resíduos orgânicos na superfície do solo, como o SPD, elevam a atividade de fosfatase ácida e as formas lábeis orgânicas e inorgânicas de P, além da formação de agregados maiores, os quais apresentam teores mais elevados de C, N, P total e P orgânico lábil.Universidade Federal de Santa MariaBRAgronomiaUFSMPrograma de Pós-Graduação em Ciência do SoloKaminski, Joãohttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4783777Y9Santos, Danilo Rheinheimer doshttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4785480Z6Giacomini, Sandro Joséhttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4794885J2Calegari, Ademirhttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4783455T6Casali, Carlos Alberto2017-03-172017-03-172012-08-24info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesisapplication/pdfapplication/pdfCASALI, Carlos Alberto. Can crop systems under long time of different soil management change the soil phosphorus forms?. 2012. 149 f. Tese (Doutorado em Agronomia) - Universidade Federal de Santa Maria, Santa Maria, 2012.http://repositorio.ufsm.br/handle/1/3340porinfo:eu-repo/semantics/openAccessreponame:Manancial - Repositório Digital da UFSMinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSM2017-07-25T13:54:18Zoai:repositorio.ufsm.br:1/3340Biblioteca Digital de Teses e Dissertaçõeshttps://repositorio.ufsm.br/ONGhttps://repositorio.ufsm.br/oai/requestatendimento.sib@ufsm.br||tedebc@gmail.comopendoar:2017-07-25T13:54:18Manancial - Repositório Digital da UFSM - Universidade Federal de Santa Maria (UFSM)false |
dc.title.none.fl_str_mv |
Sistemas de culturas sob diferentes manejos por longa duração alteram as formas de fósforo do solo? Can crop systems under long time of different soil management change the soil phosphorus forms? |
title |
Sistemas de culturas sob diferentes manejos por longa duração alteram as formas de fósforo do solo? |
spellingShingle |
Sistemas de culturas sob diferentes manejos por longa duração alteram as formas de fósforo do solo? Casali, Carlos Alberto Rotação de culturas Plantas de cobertura Biociclagem de fósforo Agregação do solo Crop rotation Cover crops Phosphorus biocycling Soil aggregation CNPQ::CIENCIAS AGRARIAS::AGRONOMIA::CIENCIA DO SOLO |
title_short |
Sistemas de culturas sob diferentes manejos por longa duração alteram as formas de fósforo do solo? |
title_full |
Sistemas de culturas sob diferentes manejos por longa duração alteram as formas de fósforo do solo? |
title_fullStr |
Sistemas de culturas sob diferentes manejos por longa duração alteram as formas de fósforo do solo? |
title_full_unstemmed |
Sistemas de culturas sob diferentes manejos por longa duração alteram as formas de fósforo do solo? |
title_sort |
Sistemas de culturas sob diferentes manejos por longa duração alteram as formas de fósforo do solo? |
author |
Casali, Carlos Alberto |
author_facet |
Casali, Carlos Alberto |
author_role |
author |
dc.contributor.none.fl_str_mv |
Kaminski, João http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4783777Y9 Santos, Danilo Rheinheimer dos http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4785480Z6 Giacomini, Sandro José http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4794885J2 Calegari, Ademir http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4783455T6 |
dc.contributor.author.fl_str_mv |
Casali, Carlos Alberto |
dc.subject.por.fl_str_mv |
Rotação de culturas Plantas de cobertura Biociclagem de fósforo Agregação do solo Crop rotation Cover crops Phosphorus biocycling Soil aggregation CNPQ::CIENCIAS AGRARIAS::AGRONOMIA::CIENCIA DO SOLO |
topic |
Rotação de culturas Plantas de cobertura Biociclagem de fósforo Agregação do solo Crop rotation Cover crops Phosphorus biocycling Soil aggregation CNPQ::CIENCIAS AGRARIAS::AGRONOMIA::CIENCIA DO SOLO |
description |
The thesis objective was to evaluate the forms of accumulation and release of phosphorus from cover crops waste under long time of different soil management systems and its relationship with the soil phosphorus forms. The experiment was established in 1986 on an Oxisol in the IAPAR experimental station in Pato Branco, Paraná State, Brazil. The treatments consisted of six winter cover crops (blue lupine, vetch, oats, radish, rye and wheat) and the winter fallow treatment, cultivated under no-tillage (NT) and conventional (CT). In September 2011 were collected soil samples (0-5 and 5-10 cm) and the shoots of winter cover crops. Confected litterbags (0.2 x 0.2 m) were collected at 7, 14, 28, 56 and 112 days after the cover crops management. In the residues collected, we assessed the accumulation of C, N, P, and held the fractionation of P. In the soil samples, we made the separation of aggregates by wet way and in the original soil and aggregates we evaluated the content of total C, N, P, the P forms, and the acid phosphatase activity. The distribution of P forms in the cover crops tissue varies among species and their accumulation was a function of nutrient soil P availability, as in NT. But for all of them, the soluble inorganic P was the principal storage form. The release of P from plant residues depends not only on its rate of decomposition, but also on the content of total and soluble P. The vetch and rye have great potential to recycle soil P, and this amount of P should be considered when prescribing phosphorus fertilization for the culture implanted in sequence. However, the long term cultivation of different winter cover crops did not affected the soil P forms in highly weathered clay soils, managed under NT and CT. On the other hand, practices that favor the accumulation of organic residues on the soil surface as the NT system, increase the acid phosphatase enzyme activity and labile organic and inorganic P forms, besides the formation of larger aggregates, which have higher levels of C, N, total P and organic labile P. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-08-24 2017-03-17 2017-03-17 |
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.uri.fl_str_mv |
CASALI, Carlos Alberto. Can crop systems under long time of different soil management change the soil phosphorus forms?. 2012. 149 f. Tese (Doutorado em Agronomia) - Universidade Federal de Santa Maria, Santa Maria, 2012. http://repositorio.ufsm.br/handle/1/3340 |
identifier_str_mv |
CASALI, Carlos Alberto. Can crop systems under long time of different soil management change the soil phosphorus forms?. 2012. 149 f. Tese (Doutorado em Agronomia) - Universidade Federal de Santa Maria, Santa Maria, 2012. |
url |
http://repositorio.ufsm.br/handle/1/3340 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Federal de Santa Maria BR Agronomia UFSM Programa de Pós-Graduação em Ciência do Solo |
publisher.none.fl_str_mv |
Universidade Federal de Santa Maria BR Agronomia UFSM Programa de Pós-Graduação em Ciência do Solo |
dc.source.none.fl_str_mv |
reponame:Manancial - Repositório Digital da UFSM instname:Universidade Federal de Santa Maria (UFSM) instacron:UFSM |
instname_str |
Universidade Federal de Santa Maria (UFSM) |
instacron_str |
UFSM |
institution |
UFSM |
reponame_str |
Manancial - Repositório Digital da UFSM |
collection |
Manancial - Repositório Digital da UFSM |
repository.name.fl_str_mv |
Manancial - Repositório Digital da UFSM - Universidade Federal de Santa Maria (UFSM) |
repository.mail.fl_str_mv |
atendimento.sib@ufsm.br||tedebc@gmail.com |
_version_ |
1805922153159196672 |