Physical attributes and organic material in pastures of Brachiaria brizantha at degradation levels
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Data de Publicação: | 2022 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Bioscience journal (Online) |
Texto Completo: | https://seer.ufu.br/index.php/biosciencejournal/article/view/54529 |
Resumo: | Pastures cover, in Brazil, around 165 million ha, most of them are at some degradation level. Recovering these pastures is essential. The objective of this study was to evaluate the sensibility of soil organic matter (SOM) and its physical attributes in pasture soil at different degradation levels (1 to 4), Capoeiras (1 and 2) and secondary Forest (Control). Samples were collected at four depths (0.00-0.05, 0.05-0.10, 0.10-0.20 and 0.20-0.40 m). We verified higher values for SOM and hydraulic conductivity (Ko) in Forest, especially in the most superficial layer (0.00-0.05). We noted low values for macroporosity in this area. In all areas under Pastures lower values for Ko were observed in the superficial layer (0.00-0.05 m) when compared to layers 0.05-0.10 and 0.10-0.20 m, which indicates that the pasture management and cattle trampling negatively affect the physical quality of the pastures. For field capacity and wilting point the average values were observed in Pasture 4 (more degraded), which caused higher values for water availability. According to the principal components analysis, except for SOM at 0.20-0.40 m, all variables studied presented correlation above 0.6. From grouping analysis, we separated 3 groups: Forest; Capoeiras 1 and Capoeira 2 and Pastures 1 to 4. |
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Physical attributes and organic material in pastures of Brachiaria brizantha at degradation levelsQualidade do solo ATRIBUTOS FISICOS E MATERIA ORGANICA EM PASTAGENS DE Brachiaria brizantha EM DIFERENTES NÍVEIS DE DEGRADAÇÃOSoil physical atributtesSoil organic mattersoil watersoil qualityAgricultural SciencesPastures cover, in Brazil, around 165 million ha, most of them are at some degradation level. Recovering these pastures is essential. The objective of this study was to evaluate the sensibility of soil organic matter (SOM) and its physical attributes in pasture soil at different degradation levels (1 to 4), Capoeiras (1 and 2) and secondary Forest (Control). Samples were collected at four depths (0.00-0.05, 0.05-0.10, 0.10-0.20 and 0.20-0.40 m). We verified higher values for SOM and hydraulic conductivity (Ko) in Forest, especially in the most superficial layer (0.00-0.05). We noted low values for macroporosity in this area. In all areas under Pastures lower values for Ko were observed in the superficial layer (0.00-0.05 m) when compared to layers 0.05-0.10 and 0.10-0.20 m, which indicates that the pasture management and cattle trampling negatively affect the physical quality of the pastures. For field capacity and wilting point the average values were observed in Pasture 4 (more degraded), which caused higher values for water availability. According to the principal components analysis, except for SOM at 0.20-0.40 m, all variables studied presented correlation above 0.6. From grouping analysis, we separated 3 groups: Forest; Capoeiras 1 and Capoeira 2 and Pastures 1 to 4.As pastagens no Brasil cobrem cerca 165 milhões de ha. Grande parte delas encontram-se em algum nível de degradação. Recupera-las é imprescindível para a eficiência agropecuária e prestação de serviços ambientais, mas para isso diferentes estratégias podem ser usadas. O objetivo deste trabalho foi avaliar a sensibilidade da matéria orgânica do solo (MOS) e dos atributos fisicos do solo, macroporosidade (Ma), condutividade hidraulica (Ko), capacidade de campo (CC), ponto de murcha (PM) e água disponivel (AD) do solo sob diferentes níveis de degração de pastagens (classificadas de 1 a 4, em ordem cresente de degradação), duas Capoeiras (1 e 2) em diferentes estagios de regenerção natural, e uma área de Mata secundária (controle). Para tanto, amostras em quatro profundidades (0,00-0,05, 0,05-0,10, 0,10-0,20 e 0,20-0,40 m) foram tomadas, visando verificar sensibilidade dos indicadores nessas diferentes camadas e separar niveis de degradação de pastagens. Verificaram-se valores de MOS e Ko mais elevados na área de Mata, sobretudo na camada superficial (0,00-0,05m), no entanto na Mata foram notadas baixos valores de Ma, sendo condição contrária verificada nas demais áreas. Em todas as áreas sob Pastagens (1 a 4) foram observados valores mais baixos de Ko na camada superficial (0,00-0,05 m) comparado às camadas 0,05-0,10 e 0,10-0,20 m indicando que o manejo da pastagem e o pisoteio afetam negativamente a qualidade física das pastagens, mesmo àquelas com maior cobertura do solo, como o Pasto 1 e Pasto 2. Para a CC, PM os maiores valores médios foram observados na área de Pasto 4 (mais degradada) que levaram à maiores valores de AD. De acordo com a análise de componentes principais,com exceção da MOS na profundidade 0,20-0,40 cm, todos as variáveis estudadas apresentaram correlação superior a 0,6 (%), demostrando que as variáveis escolhidas explicam em grande parte a variabilidade das diferentes áreas estudadas. E a partir da análise de agrupamento foi possível separar três grupos: Mata com as profundidades 0,00-0,05, 0,05-0,10 e 0,10-0,20 m; Capoeiras 1 e 2 e Pastagens 1 a 4 nas profundidades 0,00-0,05, 0,05-0,10, 0,10-0,20 e 0,20-0,40 m; e Mata na profundidade 0,20-0,40 m.EDUFU2022-02-16info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.ufu.br/index.php/biosciencejournal/article/view/5452910.14393/BJ-v38n0a2022-54529Bioscience Journal ; Vol. 38 (2022): Continuous Publication; e38008Bioscience Journal ; v. 38 (2022): Continuous Publication; e380081981-3163reponame:Bioscience journal (Online)instname:Universidade Federal de Uberlândia (UFU)instacron:UFUenghttps://seer.ufu.br/index.php/biosciencejournal/article/view/54529/33374Brazil; Contemporary Copyright (c) 2022 Paulo Roberto da Rocha Junior, Guilherme Kangussú Donagemma, Felipe Vaz Andrade, Renato Ribeiro Passos, Fabiano de Carvalho Balieirohttps://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccessRocha Junior, Paulo Roberto daDonagemma, Guilherme KangussúAndrade, Felipe VazPassos, Renato Ribeiro Balieiro, Fabiano de Carvalho2022-02-16T20:32:58Zoai:ojs.www.seer.ufu.br:article/54529Revistahttps://seer.ufu.br/index.php/biosciencejournalPUBhttps://seer.ufu.br/index.php/biosciencejournal/oaibiosciencej@ufu.br||1981-31631516-3725opendoar:2022-02-16T20:32:58Bioscience journal (Online) - Universidade Federal de Uberlândia (UFU)false |
dc.title.none.fl_str_mv |
Physical attributes and organic material in pastures of Brachiaria brizantha at degradation levels Qualidade do solo ATRIBUTOS FISICOS E MATERIA ORGANICA EM PASTAGENS DE Brachiaria brizantha EM DIFERENTES NÍVEIS DE DEGRADAÇÃO |
title |
Physical attributes and organic material in pastures of Brachiaria brizantha at degradation levels |
spellingShingle |
Physical attributes and organic material in pastures of Brachiaria brizantha at degradation levels Rocha Junior, Paulo Roberto da Soil physical atributtes Soil organic matter soil water soil quality Agricultural Sciences |
title_short |
Physical attributes and organic material in pastures of Brachiaria brizantha at degradation levels |
title_full |
Physical attributes and organic material in pastures of Brachiaria brizantha at degradation levels |
title_fullStr |
Physical attributes and organic material in pastures of Brachiaria brizantha at degradation levels |
title_full_unstemmed |
Physical attributes and organic material in pastures of Brachiaria brizantha at degradation levels |
title_sort |
Physical attributes and organic material in pastures of Brachiaria brizantha at degradation levels |
author |
Rocha Junior, Paulo Roberto da |
author_facet |
Rocha Junior, Paulo Roberto da Donagemma, Guilherme Kangussú Andrade, Felipe Vaz Passos, Renato Ribeiro Balieiro, Fabiano de Carvalho |
author_role |
author |
author2 |
Donagemma, Guilherme Kangussú Andrade, Felipe Vaz Passos, Renato Ribeiro Balieiro, Fabiano de Carvalho |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Rocha Junior, Paulo Roberto da Donagemma, Guilherme Kangussú Andrade, Felipe Vaz Passos, Renato Ribeiro Balieiro, Fabiano de Carvalho |
dc.subject.por.fl_str_mv |
Soil physical atributtes Soil organic matter soil water soil quality Agricultural Sciences |
topic |
Soil physical atributtes Soil organic matter soil water soil quality Agricultural Sciences |
description |
Pastures cover, in Brazil, around 165 million ha, most of them are at some degradation level. Recovering these pastures is essential. The objective of this study was to evaluate the sensibility of soil organic matter (SOM) and its physical attributes in pasture soil at different degradation levels (1 to 4), Capoeiras (1 and 2) and secondary Forest (Control). Samples were collected at four depths (0.00-0.05, 0.05-0.10, 0.10-0.20 and 0.20-0.40 m). We verified higher values for SOM and hydraulic conductivity (Ko) in Forest, especially in the most superficial layer (0.00-0.05). We noted low values for macroporosity in this area. In all areas under Pastures lower values for Ko were observed in the superficial layer (0.00-0.05 m) when compared to layers 0.05-0.10 and 0.10-0.20 m, which indicates that the pasture management and cattle trampling negatively affect the physical quality of the pastures. For field capacity and wilting point the average values were observed in Pasture 4 (more degraded), which caused higher values for water availability. According to the principal components analysis, except for SOM at 0.20-0.40 m, all variables studied presented correlation above 0.6. From grouping analysis, we separated 3 groups: Forest; Capoeiras 1 and Capoeira 2 and Pastures 1 to 4. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-02-16 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://seer.ufu.br/index.php/biosciencejournal/article/view/54529 10.14393/BJ-v38n0a2022-54529 |
url |
https://seer.ufu.br/index.php/biosciencejournal/article/view/54529 |
identifier_str_mv |
10.14393/BJ-v38n0a2022-54529 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://seer.ufu.br/index.php/biosciencejournal/article/view/54529/33374 |
dc.rights.driver.fl_str_mv |
https://creativecommons.org/licenses/by/4.0 info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by/4.0 |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.coverage.none.fl_str_mv |
Brazil; Contemporary |
dc.publisher.none.fl_str_mv |
EDUFU |
publisher.none.fl_str_mv |
EDUFU |
dc.source.none.fl_str_mv |
Bioscience Journal ; Vol. 38 (2022): Continuous Publication; e38008 Bioscience Journal ; v. 38 (2022): Continuous Publication; e38008 1981-3163 reponame:Bioscience journal (Online) instname:Universidade Federal de Uberlândia (UFU) instacron:UFU |
instname_str |
Universidade Federal de Uberlândia (UFU) |
instacron_str |
UFU |
institution |
UFU |
reponame_str |
Bioscience journal (Online) |
collection |
Bioscience journal (Online) |
repository.name.fl_str_mv |
Bioscience journal (Online) - Universidade Federal de Uberlândia (UFU) |
repository.mail.fl_str_mv |
biosciencej@ufu.br|| |
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1797069082890076160 |