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.
Main Authors: | ROCHA JUNIOR, P. R. da, DONAGEMMA, G. K., ANDRADE, F. V., PASSOS, R. R., BALIEIRO, F. de C. |
---|---|
Other Authors: | PAULO ROBERTO DA ROCHA JUNIOR, BIOVERSA; GUILHERME KANGUSSU DONAGEMMA, CNPS; FELIPE VAZ ANDRADE, UFES; RENATO RIBEIRO PASSOS, UFES; FABIANO DE CARVALHO BALIEIRO, CNPS. |
Format: | Artigo de periódico biblioteca |
Language: | Ingles English |
Published: |
2022-03-22
|
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 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Similar Items
-
Melhorando a qualidade dos sistemas produtivos.
by: SALTON, J. C., et al.
Published: (2019) -
Alterações microbianas e químicas de um gleissolo sob macaubeiras nativas em função da variação sazonal e espacial.
by: DINIZ, L. T., et al.
Published: (2015-02-11) -
Use and management of pasture in the cerrado biome: Impacts on aggregation of an oxisol.
by: BERTOLIN, F., et al.
Published: (2018-02-20) -
Biological attributes in integrated crop-livestock-forestry (ICLF) systems in the Maranhão State Amazon, Brazil.
by: COSTA, J. B., et al.
Published: (2018-11-07) -
Chemical and microbiological properties of an eutrophic oxisol under riparian Forest buffer reforestation and pasture.
by: PULITANO, F. M., et al.
Published: (2013-12-17)