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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.
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1. | | SILVA-SANTOS, A.; ANTUNES, A. M. S.; BIZZO, H. R.; D'AVILA, L. A.; SOUZA-SANTOS, L. C.; SOUZA, R. C. Analysis of uses of essential oils and terpenics/terpenoids compounds by pharmaceutical industry through USPTO granted patents. Revista Brasileira de Plantas Medicinais, Botucatu, v. 10, n. 1, p. 8-15, 2008.Tipo: Artigo em Periódico Indexado | Circulação/Nível: Nacional - A |
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2. | | PORTER, A. L.; ALENCA, M. S. M.; ANTUNES, A. M. S.; PERSEGONA, M. F. M.; PENTEADO FILHO, R. de C.; QUONIAM, L.; BOUTIN, E.; FARIA, L. I. L.; GREGOLIN, J. A. R. Minería tecnológica: maneras múltiples para explotar los recursos de la ciencia, tecnología e información. In: MEDINA VASQUEZ, J.; SÁNCHEZ TORRES, J. M. (Ed.). Sinergia entre la prospectiva tecnológica y la vigilancia tecnológica e inteligencia competitiva. Bogota, D.C.: Colciencias, 2008. 223-254Tipo: Capítulo em Livro Técnico-Científico |
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