| |
|
|
 | Acesso ao texto completo restrito à biblioteca da Embrapa Pecuária Sudeste. Para informações adicionais entre em contato com cppse.biblioteca@embrapa.br. |
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Arroz e Feijão; Embrapa Pecuária Sudeste. |
|
Data corrente: |
28/10/2009 |
|
Data da última atualização: |
17/05/2022 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Autoria: |
MACHADO, P. L. O. A.; BERNARDI, A. C. C.; ORTIZ VALENCIA, L. I.; MEIRELLES, M. S. P.; SILVA, C. A.; GIMENEZ, L. M.; MOLIN, J. P.; MADARI, B. E. |
|
Afiliação: |
PEDRO LUIZ OLIVEIRA DE A MACHADO, CNPAF; ALBERTO CARLOS DE CAMPOS BERNARDI, CPPSE; L. I. ORTIZ VALENCIA, UFRJ; MARGARETH SIMOES P MEIRELLES, CNPS; C. A. SILVA, UFLA; L. M. GIMENEZ, FUNDAÇÃO ABC/CASTRO, PR; J. P. MOLIN, ESALQ; BEATA EMOKE MADARI, CNPAF. |
|
Título: |
Carbon stocks of a Rhodic Ferralsol under no-tillage in Southern Brazil: spatial variability at a farm scale. |
|
Ano de publicação: |
2009 |
|
Fonte/Imprenta: |
Australian Journal of Soil Research, v. 47, n. 3, p. 253-260, May 2009. |
|
Idioma: |
Inglês |
|
Conteúdo: |
The objective of this study was to determine, at a farm level, the spatial variability of organic carbon stock (CS) at different depths on a field of 1 soil type in long-term (13-year) crop production under no-tillage. The crop rotation comprised soybean [Glycine max (L.) Merr.] alternating with maize (Zea mays L.) in the summer season. For the winter season, wheat (Triticum aestivum L.) was cropped in rotation with black oat (Avena sativa L.), a cover crop. The 12.5-ha field was sampled at a density of 6.25 samples/ha. Within the coarse grid, 2 dense grids with 20-, 10-, and 5-m spacing were established. Soil samples were collected at all grid nodes and analysed for soil organic carbon and bulk density. The CS at 0-0.05, 0.05-0.10, and 0.10-0.20m was corrected for equal soil mass. Geostatistics was used for the estimation of spatial distribution of CS at 3 soil depths. We found that CS variation was low to medium (CV 6.7-19.4%). The variograms of CS at all depths were best fitted by spherical models and showed ranges of 120m, except at 0-0.05m (range 109m). At 0-0.20m depth, CS was 15.2-24.5t/ha (CV 8.2%, range 120m). The use of geostatistics reveals a powerful tool for the spatial estimation of CS at depth of a Rhodic Ferralsol under no-tillage, and demonstrated CS variation on a 12.5-ha area, even though soil and crop management were the same for >10 years.. |
|
Palavras-Chave: |
Brasil; Organic carbon; Soil organic. |
|
Thesagro: |
Carbono; Matéria orgânica; Milho; Plantio direto; Rotação de cultura; Solo; Textura do solo; Trigo. |
|
Thesaurus Nal: |
Corn; crop rotation; geostatistics; No-tillage; soil; Soil organic carbon; Soil organic matter; soil texture; Wheat. |
|
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
|
Marc: |
LEADER 02606naa a2200445 a 4500
001 1574098
005 2022-05-17
008 2009 bl uuuu u00u1 u #d
100 1 $aMACHADO, P. L. O. A.
245 $aCarbon stocks of a Rhodic Ferralsol under no-tillage in Southern Brazil$bspatial variability at a farm scale.$h[electronic resource]
260 $c2009
520 $aThe objective of this study was to determine, at a farm level, the spatial variability of organic carbon stock (CS) at different depths on a field of 1 soil type in long-term (13-year) crop production under no-tillage. The crop rotation comprised soybean [Glycine max (L.) Merr.] alternating with maize (Zea mays L.) in the summer season. For the winter season, wheat (Triticum aestivum L.) was cropped in rotation with black oat (Avena sativa L.), a cover crop. The 12.5-ha field was sampled at a density of 6.25 samples/ha. Within the coarse grid, 2 dense grids with 20-, 10-, and 5-m spacing were established. Soil samples were collected at all grid nodes and analysed for soil organic carbon and bulk density. The CS at 0-0.05, 0.05-0.10, and 0.10-0.20m was corrected for equal soil mass. Geostatistics was used for the estimation of spatial distribution of CS at 3 soil depths. We found that CS variation was low to medium (CV 6.7-19.4%). The variograms of CS at all depths were best fitted by spherical models and showed ranges of 120m, except at 0-0.05m (range 109m). At 0-0.20m depth, CS was 15.2-24.5t/ha (CV 8.2%, range 120m). The use of geostatistics reveals a powerful tool for the spatial estimation of CS at depth of a Rhodic Ferralsol under no-tillage, and demonstrated CS variation on a 12.5-ha area, even though soil and crop management were the same for >10 years..
650 $aCorn
650 $acrop rotation
650 $ageostatistics
650 $aNo-tillage
650 $asoil
650 $aSoil organic carbon
650 $aSoil organic matter
650 $asoil texture
650 $aWheat
650 $aCarbono
650 $aMatéria orgânica
650 $aMilho
650 $aPlantio direto
650 $aRotação de cultura
650 $aSolo
650 $aTextura do solo
650 $aTrigo
653 $aBrasil
653 $aOrganic carbon
653 $aSoil organic
700 1 $aBERNARDI, A. C. C.
700 1 $aORTIZ VALENCIA, L. I.
700 1 $aMEIRELLES, M. S. P.
700 1 $aSILVA, C. A.
700 1 $aGIMENEZ, L. M.
700 1 $aMOLIN, J. P.
700 1 $aMADARI, B. E.
773 $tAustralian Journal of Soil Research$gv. 47, n. 3, p. 253-260, May 2009.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Arroz e Feijão (CNPAF) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
Registro Completo
|
Biblioteca(s): |
Embrapa Arroz e Feijão. |
|
Data corrente: |
09/05/2006 |
|
Data da última atualização: |
01/10/2010 |
|
Autoria: |
WANDER, A. E.; MESQUITA, A. N. de; MORI, C. de; DEL PELOSO, M. J. |
|
Título: |
Sistemas de cultivo e custos de produção de feijão em Frederico Westphalen (RS), na safra 2004/2005. |
|
Ano de publicação: |
2005 |
|
Fonte/Imprenta: |
Santo Antônio de Goiás: Embrapa Arroz e Feijão, 2005. |
|
Páginas: |
3 p. |
|
Série: |
(Embrapa Arroz e Feijão. Comunicado Técnico, 96). |
|
Idioma: |
Português |
|
Conteúdo: |
O presente trabalho teve por objetivos caracterizar os sistemas de cultivo de feijão praticados no município gaúcho de Frederico Westphalen (região do Alto Uruguai) e estimar os custos de produção de feijão destes sistemas de cultivo na safra 2004/2005. |
|
Palavras-Chave: |
Frederico Westphalen; Rio Grande do Sul. |
|
Thesagro: |
Custo; Feijão; Produção; Sistema de Cultivo. |
|
Categoria do assunto: |
-- |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/CNPAF/23595/1/comt_96.pdf
|
|
Marc: |
LEADER 01009nam a2200241 a 4500
001 1214094
005 2010-10-01
008 2005 bl uuuu u0uu1 u #d
100 1 $aWANDER, A. E.
245 $aSistemas de cultivo e custos de produção de feijão em Frederico Westphalen (RS), na safra 2004/2005.$h[electronic resource]
260 $aSanto Antônio de Goiás: Embrapa Arroz e Feijão$c2005
300 $a3 p.
490 $a(Embrapa Arroz e Feijão. Comunicado Técnico, 96).
520 $aO presente trabalho teve por objetivos caracterizar os sistemas de cultivo de feijão praticados no município gaúcho de Frederico Westphalen (região do Alto Uruguai) e estimar os custos de produção de feijão destes sistemas de cultivo na safra 2004/2005.
650 $aCusto
650 $aFeijão
650 $aProdução
650 $aSistema de Cultivo
653 $aFrederico Westphalen
653 $aRio Grande do Sul
700 1 $aMESQUITA, A. N. de
700 1 $aMORI, C. de
700 1 $aDEL PELOSO, M. J.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Arroz e Feijão (CNPAF) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Expressão de busca inválida. Verifique!!! |
|
|
