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Registro Completo |
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Biblioteca(s): |
Embrapa Agrobiologia. |
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Data corrente: |
07/06/2000 |
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Data da última atualização: |
07/06/2000 |
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Autoria: |
FRANZLUEBBERS, A. J. |
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Título: |
Potential C and N mineralization and microbial biomass from intact and increasingly disturbed soils of varying texture. |
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Ano de publicação: |
1999 |
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Fonte/Imprenta: |
Soil Biology and Biochemistry, Oxford, v. 31, p. 1083-1090, 1999. |
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Idioma: |
Inglês |
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Conteúdo: |
Potential C and N mineralization and soil microbial biomass C were determined following disturbance (i.e. drying and sieving) pretreatments in five soils varying in texture (30-350 mg clay g-1 soil) from the southern Piedmont USA. Soil disturbance by drying (i.e. rewetting following drying at 55 graus centigrafos for 72 h) of intact soil cores resulted in a flush of C mineralization (70% to 2.5-fold greater) during 0-3 d of incubation, but was not significantly different during 3-10 and 10-24 d periods compared with field-moist-intact soil cores. Soil disturbance by sieving resulted in greater C mineralization earlier than later in the incubation and led to significant immobilization of N of surface soil where respiration was highest. Increasing soil disturbance through smaller sieve openings resulted in a 10-60% greater flush of C mineralization that may have been due to disruption of macroaggregates, which protected soil organic C. With a conditioning period of 10 d following rewetting of dried soil, soil microbial biomass C was unaffected by drying or extent of sieving. Soil texture (i.e. clay content) did not interact with disturbance effects. Immobilization of N was predominant in surface soils (0-40 mm) of this bermudagrass pasture, where mineralizable C was very high. Carbon mineralization during 0-3 d was highly related (r2 = 0.96 mais ou menos 0.04) to C mineralization during 0-24 d, basal soil respiration and soil microbial biomass C, although increasing soil disturbance (i.e. drying and extent of sieving) altered these relationships in a predictable manner. I conclude that dried and coarsely sieved soil compares favorably to field-moist-intact soil cores for estimating soil microbial biomass and potential activity in landscapes scoured by various degrees of erosion. MenosPotential C and N mineralization and soil microbial biomass C were determined following disturbance (i.e. drying and sieving) pretreatments in five soils varying in texture (30-350 mg clay g-1 soil) from the southern Piedmont USA. Soil disturbance by drying (i.e. rewetting following drying at 55 graus centigrafos for 72 h) of intact soil cores resulted in a flush of C mineralization (70% to 2.5-fold greater) during 0-3 d of incubation, but was not significantly different during 3-10 and 10-24 d periods compared with field-moist-intact soil cores. Soil disturbance by sieving resulted in greater C mineralization earlier than later in the incubation and led to significant immobilization of N of surface soil where respiration was highest. Increasing soil disturbance through smaller sieve openings resulted in a 10-60% greater flush of C mineralization that may have been due to disruption of macroaggregates, which protected soil organic C. With a conditioning period of 10 d following rewetting of dried soil, soil microbial biomass C was unaffected by drying or extent of sieving. Soil texture (i.e. clay content) did not interact with disturbance effects. Immobilization of N was predominant in surface soils (0-40 mm) of this bermudagrass pasture, where mineralizable C was very high. Carbon mineralization during 0-3 d was highly related (r2 = 0.96 mais ou menos 0.04) to C mineralization during 0-24 d, basal soil respiration and soil microbial biomass C, although increasing soil distu... Mostrar Tudo |
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Palavras-Chave: |
Biomassa microbiana; C; Immobilization; Imobilização; N; Respiration. |
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Thesagro: |
Carbono; Mineralização; Nitrogênio; Respiração; Solo. |
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Thesaurus Nal: |
carbon; microbial biomass; mineralization; nitrogen; soil. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02652naa a2200313 a 4500
001 1621164
005 2000-06-07
008 1999 bl --- 0-- u #d
100 1 $aFRANZLUEBBERS, A. J.
245 $aPotential C and N mineralization and microbial biomass from intact and increasingly disturbed soils of varying texture.
260 $c1999
520 $aPotential C and N mineralization and soil microbial biomass C were determined following disturbance (i.e. drying and sieving) pretreatments in five soils varying in texture (30-350 mg clay g-1 soil) from the southern Piedmont USA. Soil disturbance by drying (i.e. rewetting following drying at 55 graus centigrafos for 72 h) of intact soil cores resulted in a flush of C mineralization (70% to 2.5-fold greater) during 0-3 d of incubation, but was not significantly different during 3-10 and 10-24 d periods compared with field-moist-intact soil cores. Soil disturbance by sieving resulted in greater C mineralization earlier than later in the incubation and led to significant immobilization of N of surface soil where respiration was highest. Increasing soil disturbance through smaller sieve openings resulted in a 10-60% greater flush of C mineralization that may have been due to disruption of macroaggregates, which protected soil organic C. With a conditioning period of 10 d following rewetting of dried soil, soil microbial biomass C was unaffected by drying or extent of sieving. Soil texture (i.e. clay content) did not interact with disturbance effects. Immobilization of N was predominant in surface soils (0-40 mm) of this bermudagrass pasture, where mineralizable C was very high. Carbon mineralization during 0-3 d was highly related (r2 = 0.96 mais ou menos 0.04) to C mineralization during 0-24 d, basal soil respiration and soil microbial biomass C, although increasing soil disturbance (i.e. drying and extent of sieving) altered these relationships in a predictable manner. I conclude that dried and coarsely sieved soil compares favorably to field-moist-intact soil cores for estimating soil microbial biomass and potential activity in landscapes scoured by various degrees of erosion.
650 $acarbon
650 $amicrobial biomass
650 $amineralization
650 $anitrogen
650 $asoil
650 $aCarbono
650 $aMineralização
650 $aNitrogênio
650 $aRespiração
650 $aSolo
653 $aBiomassa microbiana
653 $aC
653 $aImmobilization
653 $aImobilização
653 $aN
653 $aRespiration
773 $tSoil Biology and Biochemistry, Oxford$gv. 31, p. 1083-1090, 1999.
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Registro original: |
Embrapa Agrobiologia (CNPAB) |
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Biblioteca |
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Tipo/Formato |
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Registro |
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| Registros recuperados : 7 | |
| 1. |  | MATEUS, G. P.; CRUSCIOL, C. A. C.; PARIZ, C. M.; COSTA, N. R.; BORGHI, E.; COSTA, C.; MARTELLO, J. M.; CASTILHOS, A. M.; FRANZLUEBBERS, A. J.; CANTARELLA, H. Corn intercropped with tropical perennial grasses as affected by sidedress nitrogen application rates. Nutrient Cycling in Agroecosystems, 2019. Publicado online em 30 nov. 2019.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Milho e Sorgo. |
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| 2. | | ASSMANN, J. M.; ANGHINONI, I.; MARTINS, A. P.; COSTA, S. E. V. G. de A.; KUNRATH, T. R.; BAYER, C.; CARVALHO, P. C. de F.; FRANZLUEBBERS, A. J. Carbon and nitrogen cycling in an integrated soybean-beef cattle production system under different grazing intensities. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 50, n. 10, p. 967-978, out. 2015. Título em português: Ciclagem de carbono e nitrogênio em sistema integrado de produção de soja e bovinos de corte sob diferentes intensidades de pastejo.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 3. | | MATEUS, G. P.; CRUSCIOL, C. A. C.; PARIZ, C. M.; BORGHI, E.; COSTA, C.; MARTELLO, J. M.; FRANZLUEBBERS, A. J.; CASTILHOS, A. M. Sidedress nitrogen application rates to sorghum intercropped with tropical perennial grasses. Agronomy Journal, Madison, v. 108, n. 1, p. 433-447, 2016.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
| Biblioteca(s): Embrapa Milho e Sorgo. |
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| 4. | | CRUSCIOL, C. A. C.; FERRARI NETO, J.; MUI, T. S.; FRANZLUEBBERS, A. J.; COSTA, C. H. M. DA; CASTRO, G. S. A.; RIBEIRO, L. C.; COSTA, N. R. Rhizobial inoculation and molybdenum fertilization in peanut crops grown in a no tillage system after 20 years of pasture. Revista Brasileira de Ciência do Solo, v. 43, p. e0170399, 2019. 19 p.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Territorial. |
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| 5. | | CRUSCIOL, C. A. C.; MARQUES, R. R.; CARMEIS FILHO, A. C. A.; SORATTO, R. P.; COSTA, C. H. M.; FERRARI NETO, J.; CASTRO, G. S. A.; PARIZ, C. M.; CASTILHOS, A. M.; FRANZLUEBBERS, A. J. Lime and gypsum combination improves crop and forage yields and estimated meat production and revenue in a variable charge tropical soil. Nutrient Cycling in Agroecosystems, v. 115, n. 312, p. 1-26, 2019.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Territorial. |
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| 6. | | FRANZLUEBBERS, A. J.; ANGERS, D.; CLARK, H.; EHRHARDT, F.; GRACE, P.; MARTIN NETO, L.; MCCONKEY, B.; PALMER, L.; RECOUS, S.; RODRIGUES, R. de A. R.; ROEL, A.; SCHOLTEN, M.; SHAFER, S.; SLATTERY, B.; SOUSSANA, J.-F.; VERHAGEN, J.; YAGI, K.; ZORRILLA, G. Global Research Alliance on agricultural greenhouse gases. In: ZOLIN, C. A.; RODRIGUES, R. de A. R. (Ed.). Impact of climate change on water resources in agriculture. Boca Raton: CRC Press, 2015. cap. 3, p. 39-60.| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Solos. |
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| 7. | | LIEBIG, M. A.; FRANZLUEBBERS, A. J.; ALVAREZ, C.; CHIESA, T. D.; LEWCZUK, N.; PIÑEIRO, G.; POSSE, G.; YAHDJIAN, L.; GRACE, P.; CABRAL, O. M. R.; MARTIN NETO, L.; RODRIGUES, R. de A. R.; AMIRO, B.; ANGERS, D.; HAO, X.; OELBERMANN, M.; TENUTA, M.; MUNKHOLM, L. J.; REGINA, K.; CELLIER, P.; EHRHARDT, F.; RICHARD, G.; DECHOW, R.; AGUS, F.; WIDIARTA, N.; SPINK, J.; BERTI, A.; GRIGNANI, C.; MAZZONCINI, M.; ORSINI, R.; ROGGERO, P. P.; SEDDAIU, G.; TEI, F.; VENTRELLA, D.; VITALI, G.; KISHIMOTO-MO, A.; SHIRATO, Y.; SUDO, S.; SHIN, J.; SCHIPPER, L.; SAVÉ, R.; LEIFELD, J.; SPADAVECCHIA, L.; YELURIPATI, J.; DEL GROSSO, S.; RICE, C.; SAWCHIK, J. MAGGnet: an international network to foster mitigation of agricultural greenhouse gases. Carbon Management, v. 7, N. 3-4, P. 243-248, 2016.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Meio Ambiente; Embrapa Solos. |
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| Registros recuperados : 7 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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