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Registro Completo |
Biblioteca(s): |
Embrapa Amazônia Oriental. |
Data corrente: |
18/08/2006 |
Data da última atualização: |
03/02/2017 |
Tipo da produção científica: |
Resumo em Anais de Congresso |
Autoria: |
BENCHIMOL, R. L.; POLTRONIERI, L. S.; BASTOS, C. N.; SOARES, C. M. A. |
Afiliação: |
RUTH LINDA BENCHIMOL, CPATU; LUIS SEBASTIÃO POLTRONIERI, CPATU; CLEBER N. BASTOS, CEPLAC-SUPOR; CARLA M. A. SOARES, UFRA. |
Título: |
Polifagia de Ceratobasidium stevensii. |
Ano de publicação: |
2004 |
Fonte/Imprenta: |
Fitopatologia Brasileira, v. 29, p. S39, ago. 2004. Suplemento. |
Idioma: |
Português |
Palavras-Chave: |
Controle de doença; Queima-do-fio. |
Thesagro: |
Doença de Planta. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/102403/1/5714.pdf
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Marc: |
LEADER 00494nam a2200169 a 4500 001 1408513 005 2017-02-03 008 2004 bl uuuu u00u1 u #d 100 1 $aBENCHIMOL, R. L. 245 $aPolifagia de Ceratobasidium stevensii. 260 $aFitopatologia Brasileira, v. 29, p. S39, ago. 2004. Suplemento.$c2004 650 $aDoença de Planta 653 $aControle de doença 653 $aQueima-do-fio 700 1 $aPOLTRONIERI, L. S. 700 1 $aBASTOS, C. N. 700 1 $aSOARES, C. M. A.
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Embrapa Amazônia Oriental (CPATU) |
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![](/consulta/web/img/deny.png) | Acesso ao texto completo restrito à biblioteca da Embrapa Agrobiologia. Para informações adicionais entre em contato com cnpab.biblioteca@embrapa.br. |
Registro Completo
Biblioteca(s): |
Embrapa Agrobiologia. |
Data corrente: |
14/12/2000 |
Data da última atualização: |
14/12/2000 |
Autoria: |
STOYAN, H.; DE-POLLI, H.; BOHM, S.; ROBERTSON, G. P.; PAUL, E. A. |
Título: |
Spatial heterogeneity of soil respiration and related properties at the plant scale. |
Ano de publicação: |
2000 |
Fonte/Imprenta: |
Plant and Soil, Dordrecht, v.222, p. 203-214, 2000. |
Idioma: |
Inglês |
Conteúdo: |
Geostatistical techniques were used to quantify the scale and degree of soil heterogeneity in 2 m2 plots around 9-year-old poplar trees and within a wheat field. Samples were taken during two years, on an unaligned grid, for analysis of soil respiration, C and N content, available P, gravimetric moisture, pH, nitrification potential, and root biomass. Kriged maps of soil respiration, moisture, and C content showed strong spatial structure associated with poplar trees but not with wheat rows. All soil properties showed higher autocorrelation in June than in April. Isopleth patchiness for all variates was less in June. This was associated with lower respiration rates due to lower litter decomposition. From the degree and scale of heterogeneity seen in this study, we conclude that the main causes of soil heterogeneity at this scale (2 m2) are likely to be found at micro scales controlled in part by plant root and plant residue patterns. These must be understood in the evaluation of ecosystem processes.
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Palavras-Chave: |
C; Chemicophysical properties; N. |
Thesagro: |
Carbono; Nitrogênio; Ph; Propriedade Físico-Química; Respiração do Solo. |
Thesaurus NAL: |
carbon; nitrogen; soil respiration. |
Categoria do assunto: |
-- |
Marc: |
LEADER 01799naa a2200301 a 4500 001 1597245 005 2000-12-14 008 2000 bl --- 0-- u #d 100 1 $aSTOYAN, H. 245 $aSpatial heterogeneity of soil respiration and related properties at the plant scale. 260 $c2000 520 $aGeostatistical techniques were used to quantify the scale and degree of soil heterogeneity in 2 m2 plots around 9-year-old poplar trees and within a wheat field. Samples were taken during two years, on an unaligned grid, for analysis of soil respiration, C and N content, available P, gravimetric moisture, pH, nitrification potential, and root biomass. Kriged maps of soil respiration, moisture, and C content showed strong spatial structure associated with poplar trees but not with wheat rows. All soil properties showed higher autocorrelation in June than in April. Isopleth patchiness for all variates was less in June. This was associated with lower respiration rates due to lower litter decomposition. From the degree and scale of heterogeneity seen in this study, we conclude that the main causes of soil heterogeneity at this scale (2 m2) are likely to be found at micro scales controlled in part by plant root and plant residue patterns. These must be understood in the evaluation of ecosystem processes. 650 $acarbon 650 $anitrogen 650 $asoil respiration 650 $aCarbono 650 $aNitrogênio 650 $aPh 650 $aPropriedade Físico-Química 650 $aRespiração do Solo 653 $aC 653 $aChemicophysical properties 653 $aN 700 1 $aDE-POLLI, H. 700 1 $aBOHM, S. 700 1 $aROBERTSON, G. P. 700 1 $aPAUL, E. A. 773 $tPlant and Soil, Dordrecht$gv.222, p. 203-214, 2000.
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