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Registro Completo |
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Biblioteca(s): |
Embrapa Pecuária Sul. |
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Data corrente: |
17/05/2010 |
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Data da última atualização: |
18/07/2014 |
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Autoria: |
SILVA SOBRINHO, A. G. da. |
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Título: |
Tópicos em ovinocultura. |
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Ano de publicação: |
1993 |
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Fonte/Imprenta: |
Jaboticabal: [s. n.], 1993. |
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Páginas: |
178 p. |
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Idioma: |
Português |
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Conteúdo: |
Espécie ovina e o ambiente; Principais raças ovinas; Instalações para ovinos; Pastagens para ovinos; Formulação de uma mistura mineral para ovinos em condições de pastagens; Consorciação de ovinos com culturas vegetais e animais; Alguns aspectos básicos em uma criação de ovinos; Considerações sobre a lã, estrutura, características, classificação e tosquia; Produção de carne ovina; Considerações sobre produção de carne ovina; Reprodução nos ovinos; Principais enfermidades dos ovinos e seu tratamento; Vias de aplicação de medicamentos; Considerações sobre descarte de ovinos; Informações fisiológicas sobre ovinos; Glossário de termos usuais em ovinocultura (inglês-português). |
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Thesagro: |
Ovinocultura. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01042nam a2200133 a 4500
001 1853300
005 2014-07-18
008 1993 bl uuuu 00u1 u #d
100 1 $aSILVA SOBRINHO, A. G. da
245 $aTópicos em ovinocultura.
260 $aJaboticabal: [s. n.], 1993.$c1993
300 $a178 p.
520 $aEspécie ovina e o ambiente; Principais raças ovinas; Instalações para ovinos; Pastagens para ovinos; Formulação de uma mistura mineral para ovinos em condições de pastagens; Consorciação de ovinos com culturas vegetais e animais; Alguns aspectos básicos em uma criação de ovinos; Considerações sobre a lã, estrutura, características, classificação e tosquia; Produção de carne ovina; Considerações sobre produção de carne ovina; Reprodução nos ovinos; Principais enfermidades dos ovinos e seu tratamento; Vias de aplicação de medicamentos; Considerações sobre descarte de ovinos; Informações fisiológicas sobre ovinos; Glossário de termos usuais em ovinocultura (inglês-português).
650 $aOvinocultura
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Embrapa Pecuária Sul (CPPSUL) |
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Registro Completo
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
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Data corrente: |
29/11/2023 |
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Data da última atualização: |
29/11/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 3 |
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Autoria: |
NGOLO, A. O.; OLIVEIRA, F. S. de; OLIVEIRA, M. F. de; FERNANDES, R. B. A. |
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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. |
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Título: |
Microstructural changes in Oxisols under long-term different management systems. |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
Revista Brasileira de Ciência do Solo, v. 47, e0230051, 2023. |
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DOI: |
https://doi.org/10.36783/18069657rbcs20230051 |
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Idioma: |
Inglês |
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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 |
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Palavras-Chave: |
Microestrutura do solo; Microtomografia de raios X; Morfometria dos poros; Pores morphometry; X-ray microtomography. |
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Thesagro: |
Solo. |
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Thesaurus NAL: |
Microstructure; Soil; Soil micromorphology. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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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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