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Registro Completo |
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
27/06/2005 |
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Data da última atualização: |
20/06/2006 |
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Autoria: |
ALMEIDA, N. de O.; SOUZA, M. E. R. F. de. |
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Título: |
Estudos comparativos do crescimento inicial de sumaúma (Ceiba petandra (L) Gaertn.) em plantios a pleno Sol e em enriquecimento de capoeira - resultados preliminares. |
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Ano de publicação: |
1999 |
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Fonte/Imprenta: |
In: INTERNATIONAL CONGRESS AND EXHIBITION ON FOREST, 5., 1999, Curitiba. Forest 99: [resumos]. Rio de Janeiro: BIOSFERA, 1999. |
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Idioma: |
Português |
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Notas: |
1 CD-ROM. Autoria bilíngue: CONGRESSO E EXPOSICAO INTERNACIONAL SOBRE FLORESTAS, 5., 1999, Curitiba. |
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Categoria do assunto: |
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Marc: |
LEADER 00660naa a2200133 a 4500
001 1310893
005 2006-06-20
008 1999 bl uuuu u00u1 u #d
100 1 $aALMEIDA, N. de O.
245 $aEstudos comparativos do crescimento inicial de sumaúma (Ceiba petandra (L) Gaertn.) em plantios a pleno Sol e em enriquecimento de capoeira - resultados preliminares.
260 $c1999
500 $a1 CD-ROM. Autoria bilíngue: CONGRESSO E EXPOSICAO INTERNACIONAL SOBRE FLORESTAS, 5., 1999, Curitiba.
700 1 $aSOUZA, M. E. R. F. de
773 $tIn: INTERNATIONAL CONGRESS AND EXHIBITION ON FOREST, 5., 1999, Curitiba. Forest 99: [resumos]. Rio de Janeiro: BIOSFERA, 1999.
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Registro original: |
Embrapa Florestas (CNPF) |
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Biblioteca(s): |
Embrapa Roraima. |
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Data corrente: |
20/07/2021 |
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Data da última atualização: |
20/07/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
EVALD, A.; MELO, V. F.; ROCHA, P. R. R.; CORDEIRO, A. C. C.; MAIA, S. da S.; ESPINDOLA, I. DE C. |
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Afiliação: |
ANTONIO CARLOS CENTENO CORDEIRO, CPAF-RR. |
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Título: |
Soil attributes under different water management systems of rice paddies in the Amazonian Savanna of Brazil. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Revista Caatinga, Mossoró, v. 34, n. 3, p. 640 - 649, jul.- set., 2021. |
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Idioma: |
Português |
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Conteúdo: |
The rational use of water while considering the increases in food production is a great challenge for agriculture currently. The aim of the present study was to evaluate the soil properties of rice paddy areas under different water management systems. For this, the rice cultivars BRS Tropical and IRGA 424 were grown under the following treatments: M1: Intermittent flooding; M2: Intermittent flooding, followed by continuous flooding; M3: Continuous flooding, followed by intermittent flooding; and M4: Continuous flooding for the entire plant cycle. As a control, a non-cultivated area, adjacent to the experimental plots was also evaluated. The variables analyzed were P, K+, Ca2+, Mg2+ and Al3+ contents, pH, soil organic carbon (SOC), total nitrogen (TN) Carbon Stock (C-Stock), nitrogen stock (N-Stock), Cation-exchange capacity (CEC), C/N ratio; CO2 emission, soil microbial biomass carbon (SMB), metabolic coefficient (qMic) and acid phosphatase and urease activities. There was not difference among the different water management systems for P, K+, Mg2+, CEC and C/N ratio. The SMB and the acid phosphatase and urease activities were lower under the different treatments when compared to the control. The CO2 emission under rice paddy system was influenced by the phenological phase of the crop. The variables SOC, C-Stock, SMB, C/N ratio, K+, acid phosphatase and usease activities are those most sensitive attributes observed in the soil under different water management systems during rice cultivation. Water management in the rice paddy system influenced soil by changing its quality. MenosThe rational use of water while considering the increases in food production is a great challenge for agriculture currently. The aim of the present study was to evaluate the soil properties of rice paddy areas under different water management systems. For this, the rice cultivars BRS Tropical and IRGA 424 were grown under the following treatments: M1: Intermittent flooding; M2: Intermittent flooding, followed by continuous flooding; M3: Continuous flooding, followed by intermittent flooding; and M4: Continuous flooding for the entire plant cycle. As a control, a non-cultivated area, adjacent to the experimental plots was also evaluated. The variables analyzed were P, K+, Ca2+, Mg2+ and Al3+ contents, pH, soil organic carbon (SOC), total nitrogen (TN) Carbon Stock (C-Stock), nitrogen stock (N-Stock), Cation-exchange capacity (CEC), C/N ratio; CO2 emission, soil microbial biomass carbon (SMB), metabolic coefficient (qMic) and acid phosphatase and urease activities. There was not difference among the different water management systems for P, K+, Mg2+, CEC and C/N ratio. The SMB and the acid phosphatase and urease activities were lower under the different treatments when compared to the control. The CO2 emission under rice paddy system was influenced by the phenological phase of the crop. The variables SOC, C-Stock, SMB, C/N ratio, K+, acid phosphatase and usease activities are those most sensitive attributes observed in the soil under different water management systems during r... Mostrar Tudo |
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Palavras-Chave: |
CO2 efflux; Paddy environment; Soil quality indicators. |
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Thesaurus NAL: |
Soil enzymes. |
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Categoria do assunto: |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/224562/1/9345-ARTIGO-PUBLICAR-64073-1-10-20210719.pdf
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Marc: |
LEADER 02313naa a2200229 a 4500
001 2133047
005 2021-07-20
008 2021 bl uuuu u00u1 u #d
100 1 $aEVALD, A.
245 $aSoil attributes under different water management systems of rice paddies in the Amazonian Savanna of Brazil.$h[electronic resource]
260 $c2021
520 $aThe rational use of water while considering the increases in food production is a great challenge for agriculture currently. The aim of the present study was to evaluate the soil properties of rice paddy areas under different water management systems. For this, the rice cultivars BRS Tropical and IRGA 424 were grown under the following treatments: M1: Intermittent flooding; M2: Intermittent flooding, followed by continuous flooding; M3: Continuous flooding, followed by intermittent flooding; and M4: Continuous flooding for the entire plant cycle. As a control, a non-cultivated area, adjacent to the experimental plots was also evaluated. The variables analyzed were P, K+, Ca2+, Mg2+ and Al3+ contents, pH, soil organic carbon (SOC), total nitrogen (TN) Carbon Stock (C-Stock), nitrogen stock (N-Stock), Cation-exchange capacity (CEC), C/N ratio; CO2 emission, soil microbial biomass carbon (SMB), metabolic coefficient (qMic) and acid phosphatase and urease activities. There was not difference among the different water management systems for P, K+, Mg2+, CEC and C/N ratio. The SMB and the acid phosphatase and urease activities were lower under the different treatments when compared to the control. The CO2 emission under rice paddy system was influenced by the phenological phase of the crop. The variables SOC, C-Stock, SMB, C/N ratio, K+, acid phosphatase and usease activities are those most sensitive attributes observed in the soil under different water management systems during rice cultivation. Water management in the rice paddy system influenced soil by changing its quality.
650 $aSoil enzymes
653 $aCO2 efflux
653 $aPaddy environment
653 $aSoil quality indicators
700 1 $aMELO, V. F.
700 1 $aROCHA, P. R. R.
700 1 $aCORDEIRO, A. C. C.
700 1 $aMAIA, S. da S.
700 1 $aESPINDOLA, I. DE C.
773 $tRevista Caatinga, Mossoró$gv. 34, n. 3, p. 640 - 649, jul.- set., 2021.
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Embrapa Roraima (CPAF-RR) |
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