Physical attributes and organic material in pastures of Brachiaria brizantha at degradation levels.
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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Format: | Artigo de periódico biblioteca |
Language: | Ingles English |
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2022-03-22
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Subjects: | Soil physical attributes, Solo, Matéria Orgânica, Qualidade, Água do Solo, Soil organic matter, Soil quality, Soil water, |
Online Access: | http://www.alice.cnptia.embrapa.br/alice/handle/doc/1141118 https://doi.org/10.14393/BJ-v38n0a2022-54529 |
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dig-alice-doc-11411182022-03-22T11:00:43Z Physical attributes and organic material in pastures of Brachiaria brizantha at degradation levels. ROCHA JUNIOR, P. R. da DONAGEMMA, G. K. ANDRADE, F. V. PASSOS, R. R. BALIEIRO, F. de C. PAULO ROBERTO DA ROCHA JUNIOR, BIOVERSA; GUILHERME KANGUSSU DONAGEMMA, CNPS; FELIPE VAZ ANDRADE, UFES; RENATO RIBEIRO PASSOS, UFES; FABIANO DE CARVALHO BALIEIRO, CNPS. Soil physical attributes Solo Matéria Orgânica Qualidade Água do Solo Soil organic matter Soil quality Soil water 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. 2022-03-22T11:00:33Z 2022-03-22T11:00:33Z 2022-03-22 2022 Artigo de periódico Bioscience Journal, v. 38, e38008, 2022. http://www.alice.cnptia.embrapa.br/alice/handle/doc/1141118 https://doi.org/10.14393/BJ-v38n0a2022-54529 Ingles en openAccess |
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Soil physical attributes Solo Matéria Orgânica Qualidade Água do Solo Soil organic matter Soil quality Soil water Soil physical attributes Solo Matéria Orgânica Qualidade Água do Solo Soil organic matter Soil quality Soil water |
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Soil physical attributes Solo Matéria Orgânica Qualidade Água do Solo Soil organic matter Soil quality Soil water Soil physical attributes Solo Matéria Orgânica Qualidade Água do Solo Soil organic matter Soil quality Soil water ROCHA JUNIOR, P. R. da DONAGEMMA, G. K. ANDRADE, F. V. PASSOS, R. R. BALIEIRO, F. de C. Physical attributes and organic material in pastures of Brachiaria brizantha at degradation levels. |
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. |
author2 |
PAULO ROBERTO DA ROCHA JUNIOR, BIOVERSA; GUILHERME KANGUSSU DONAGEMMA, CNPS; FELIPE VAZ ANDRADE, UFES; RENATO RIBEIRO PASSOS, UFES; FABIANO DE CARVALHO BALIEIRO, CNPS. |
author_facet |
PAULO ROBERTO DA ROCHA JUNIOR, BIOVERSA; GUILHERME KANGUSSU DONAGEMMA, CNPS; FELIPE VAZ ANDRADE, UFES; RENATO RIBEIRO PASSOS, UFES; FABIANO DE CARVALHO BALIEIRO, CNPS. ROCHA JUNIOR, P. R. da DONAGEMMA, G. K. ANDRADE, F. V. PASSOS, R. R. BALIEIRO, F. de C. |
format |
Artigo de periódico |
topic_facet |
Soil physical attributes Solo Matéria Orgânica Qualidade Água do Solo Soil organic matter Soil quality Soil water |
author |
ROCHA JUNIOR, P. R. da DONAGEMMA, G. K. ANDRADE, F. V. PASSOS, R. R. BALIEIRO, F. de C. |
author_sort |
ROCHA JUNIOR, P. R. da |
title |
Physical attributes and organic material in pastures of Brachiaria brizantha at degradation levels. |
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. |
publishDate |
2022-03-22 |
url |
http://www.alice.cnptia.embrapa.br/alice/handle/doc/1141118 https://doi.org/10.14393/BJ-v38n0a2022-54529 |
work_keys_str_mv |
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1756028134015107072 |