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Registro Completo |
Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
Data corrente: |
23/10/1996 |
Data da última atualização: |
08/09/2021 |
Tipo da produção científica: |
Resumo em Anais de Congresso |
Autoria: |
SOUSA, F. B. de; ARAÚJO, M. R. A. de. |
Afiliação: |
FRANCISCO BENI DE SOUSA, CNPC; MARCELO RENATO DE ARAÚJO ALVES, CNPC. |
Título: |
Avaliação de leucena na região Semi-árida do Ceará. |
Ano de publicação: |
1994 |
Fonte/Imprenta: |
In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 31., 1994, Maringá.. Anais... Maringá: Sociedade Brasileira de Zootecnia, 1994. p. 258. |
Idioma: |
Português |
Palavras-Chave: |
Avaliação; Evaluation. |
Thesagro: |
Legume; Leguminosa; Leucaena; Leucaena Leucocephala; Planta forrageira; Variedade. |
Thesaurus Nal: |
Brazil; Forage grasses; Forage legumes; Rangelands; Semiarid zones. |
Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/45997/1/RAC-Avaliacao-de-leucena.pdf
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Marc: |
LEADER 00827nam a2200265 a 4500 001 1514579 005 2021-09-08 008 1994 bl uuuu u00u1 u #d 100 1 $aSOUSA, F. B. de 245 $aAvaliação de leucena na região Semi-árida do Ceará.$h[electronic resource] 260 $aIn: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 31., 1994, Maringá.. Anais... Maringá: Sociedade Brasileira de Zootecnia, 1994. p. 258.$c1994 650 $aBrazil 650 $aForage grasses 650 $aForage legumes 650 $aRangelands 650 $aSemiarid zones 650 $aLegume 650 $aLeguminosa 650 $aLeucaena 650 $aLeucaena Leucocephala 650 $aPlanta forrageira 650 $aVariedade 653 $aAvaliação 653 $aEvaluation 700 1 $aARAÚJO, M. R. A. de
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Embrapa Caprinos e Ovinos (CNPC) |
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Registro Completo
Biblioteca(s): |
Embrapa Milho e Sorgo. |
Data corrente: |
29/11/2023 |
Data da última atualização: |
29/11/2023 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 3 |
Autoria: |
NGOLO, A. O.; OLIVEIRA, F. S. de; OLIVEIRA, M. F. de; FERNANDES, R. B. A. |
Afiliação: |
ARISTIDES OSVALDO NGOLO CENTRO NACIONAL DE INVESTIGAÇÃO CIENTÍFICA, LUANDA, ANGOLA., CENTRO NACIONAL DE INVESTIGAÇÃO CIENTÍFICA, LUANDA, ANGOLA; FÁBIO SOARES DE OLIVEIRA, UNIVERSIDADE FEDERAL DE MINAS GERAIS; MAURILIO FERNANDES DE OLIVEIRA, CNPMS; RAPHAEL BRAGANÇA ALVES FERNANDES, UNIVERSIDADE FEDERAL DE VIÇOSA. |
Título: |
Microstructural changes in Oxisols under long-term different management systems. |
Ano de publicação: |
2023 |
Fonte/Imprenta: |
Revista Brasileira de Ciência do Solo, v. 47, e0230051, 2023. |
DOI: |
https://doi.org/10.36783/18069657rbcs20230051 |
Idioma: |
Inglês |
Conteúdo: |
There has long been a discussion about the effects of soil management on its structure. Since changes can occur due to management and time of use, more accurate assessments can be achieved if carried out in long-term experiments. This study investigated the long-term effects of soil management on the physical quality of a Cerrado Oxisol (Latossolo Vermelho), focusing on microstructural changes. Micromorphology and computed tomography techniques were used to assess the soil’s microstructure. The study compared areas under long-term and different soil management practices, including disc plowing, no-tillage, and disc harrow+subsoiler. A native Cerrado area was considered as the reference. Micromorphology revealed some changes in the pedological features of soil aggregates, but the granular structure showed good resistance even after two decades of use and management. It also indicated a decrease in larger pores and an increase in the surface soil layer micropores for the disc plowing and no-tillage treatments. These results were consistent with traditional laboratory evaluations of soil porosity. Computed tomography was limited due to increased soil bulk density in the cultivated treatments, but it showed potential for assessing soil porosity and pore connectivity. We concluded that micromorphology effectively identifies microstructural changes in Oxisols with small and strong granular structures, and the granular soil aggregates displayed resilience even after long-term management. The micromorphometric evaluation corroborates with traditional methods and suggests loss of pores associated with the disc harrow+subsoiler treatment. MenosThere has long been a discussion about the effects of soil management on its structure. Since changes can occur due to management and time of use, more accurate assessments can be achieved if carried out in long-term experiments. This study investigated the long-term effects of soil management on the physical quality of a Cerrado Oxisol (Latossolo Vermelho), focusing on microstructural changes. Micromorphology and computed tomography techniques were used to assess the soil’s microstructure. The study compared areas under long-term and different soil management practices, including disc plowing, no-tillage, and disc harrow+subsoiler. A native Cerrado area was considered as the reference. Micromorphology revealed some changes in the pedological features of soil aggregates, but the granular structure showed good resistance even after two decades of use and management. It also indicated a decrease in larger pores and an increase in the surface soil layer micropores for the disc plowing and no-tillage treatments. These results were consistent with traditional laboratory evaluations of soil porosity. Computed tomography was limited due to increased soil bulk density in the cultivated treatments, but it showed potential for assessing soil porosity and pore connectivity. We concluded that micromorphology effectively identifies microstructural changes in Oxisols with small and strong granular structures, and the granular soil aggregates displayed resilience even after long-term manag... Mostrar Tudo |
Palavras-Chave: |
Microestrutura do solo; Microtomografia de raios X; Morfometria dos poros; Pores morphometry; X-ray microtomography. |
Thesagro: |
Solo. |
Thesaurus NAL: |
Microstructure; Soil; Soil micromorphology. |
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1158891/1/Microstructural-changes-in-oxisols-under-long-term-different-management-systems.pdf
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Marc: |
LEADER 02521naa a2200277 a 4500 001 2158891 005 2023-11-29 008 2023 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.36783/18069657rbcs20230051$2DOI 100 1 $aNGOLO, A. O. 245 $aMicrostructural changes in Oxisols under long-term different management systems.$h[electronic resource] 260 $c2023 520 $aThere has long been a discussion about the effects of soil management on its structure. Since changes can occur due to management and time of use, more accurate assessments can be achieved if carried out in long-term experiments. This study investigated the long-term effects of soil management on the physical quality of a Cerrado Oxisol (Latossolo Vermelho), focusing on microstructural changes. Micromorphology and computed tomography techniques were used to assess the soil’s microstructure. The study compared areas under long-term and different soil management practices, including disc plowing, no-tillage, and disc harrow+subsoiler. A native Cerrado area was considered as the reference. Micromorphology revealed some changes in the pedological features of soil aggregates, but the granular structure showed good resistance even after two decades of use and management. It also indicated a decrease in larger pores and an increase in the surface soil layer micropores for the disc plowing and no-tillage treatments. These results were consistent with traditional laboratory evaluations of soil porosity. Computed tomography was limited due to increased soil bulk density in the cultivated treatments, but it showed potential for assessing soil porosity and pore connectivity. We concluded that micromorphology effectively identifies microstructural changes in Oxisols with small and strong granular structures, and the granular soil aggregates displayed resilience even after long-term management. The micromorphometric evaluation corroborates with traditional methods and suggests loss of pores associated with the disc harrow+subsoiler treatment. 650 $aMicrostructure 650 $aSoil 650 $aSoil micromorphology 650 $aSolo 653 $aMicroestrutura do solo 653 $aMicrotomografia de raios X 653 $aMorfometria dos poros 653 $aPores morphometry 653 $aX-ray microtomography 700 1 $aOLIVEIRA, F. S. de 700 1 $aOLIVEIRA, M. F. de 700 1 $aFERNANDES, R. B. A. 773 $tRevista Brasileira de Ciência do Solo$gv. 47, e0230051, 2023.
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