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 | Acesso ao texto completo restrito à biblioteca da Embrapa Pecuária Sudeste. Para informações adicionais entre em contato com cppse.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Arroz e Feijão; Embrapa Pecuária Sudeste. |
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Data corrente: |
28/10/2009 |
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Data da última atualização: |
17/05/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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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. |
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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. |
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Título: |
Carbon stocks of a Rhodic Ferralsol under no-tillage in Southern Brazil: spatial variability at a farm scale. |
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Ano de publicação: |
2009 |
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Fonte/Imprenta: |
Australian Journal of Soil Research, v. 47, n. 3, p. 253-260, May 2009. |
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Idioma: |
Inglês |
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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.. |
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Palavras-Chave: |
Brasil; Organic carbon; Soil organic. |
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Thesagro: |
Carbono; Matéria orgânica; Milho; Plantio direto; Rotação de cultura; Solo; Textura do solo; Trigo. |
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Thesaurus Nal: |
Corn; crop rotation; geostatistics; No-tillage; soil; Soil organic carbon; Soil organic matter; soil texture; Wheat. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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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.
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Registro original: |
Embrapa Arroz e Feijão (CNPAF) |
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Biblioteca |
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Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Amazônia Ocidental. |
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Data corrente: |
23/09/2015 |
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Data da última atualização: |
05/04/2022 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
SOUSA, S. G. de A.; GARCIA, L. C.; BARRETO, R. dos S. |
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Afiliação: |
SILAS GARCIA AQUINO DE SOUSA, CPAA; LUCINDA CARNEIRO GARCIA, CPAA. |
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Título: |
Biometria e germinação de sementes de tucumã do Amazonas (Astrocaryum aculeatum -Arecaceae). |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
Informativo ABRATES, Curitiba, v. 23, n. 2, set. 2015. Número especial, ref. 589. Resumo apresentado no XIX Congresso Brasileiro de Sementes, Foz do Iguaçu, 2015. |
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Idioma: |
Português |
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Conteúdo: |
O presente trabalho objetivou caracterizar o tamanho das sementes de tucumã e sua respectiva germinação. |
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Palavras-Chave: |
Palmeiras; Sementes florestais. |
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Thesaurus NAL: |
Amazonia. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/130236/1/589.pdf
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Marc: |
LEADER 00725nam a2200169 a 4500
001 2024860
005 2022-04-05
008 2015 bl uuuu u00u1 u #d
100 1 $aSOUSA, S. G. de A.
245 $aBiometria e germinação de sementes de tucumã do Amazonas (Astrocaryum aculeatum -Arecaceae).
260 $aInformativo ABRATES, Curitiba, v. 23, n. 2, set. 2015. Número especial, ref. 589. Resumo apresentado no XIX Congresso Brasileiro de Sementes, Foz do Iguaçu$c2015
520 $aO presente trabalho objetivou caracterizar o tamanho das sementes de tucumã e sua respectiva germinação.
650 $aAmazonia
653 $aPalmeiras
653 $aSementes florestais
700 1 $aGARCIA, L. C.
700 1 $aBARRETO, R. dos S.
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