Efeitos da aplicação do lodo de esgoto enriquecido com cádmio e zinco na cultura do arroz Effects of the application of cadmium and zinc-enriched sewage sludge on rice
A utilização do lodo de esgoto, como fonte de nutrientes para as plantas, pode ser limitada pela presença de metais, que podem causar contaminação no solo, nos aqüíferos e nas plantas. Lodo de esgoto urbano produzido na Estação de Tratamento da Ilha do Governador (ETIG), Rio de Janeiro (RJ), foi enr...
Ausführliche Beschreibung
Autor*in: |
Clarice de Oliveira [verfasserIn] Nelson Moura Brasil do Amaral Sobrinho [verfasserIn] Valter dos Santos Marques [verfasserIn] Nelson Mazur [verfasserIn] |
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Sprache: |
Englisch |
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2005 |
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Übergeordnetes Werk: |
In: Revista Brasileira de Ciência do Solo - Sociedade Brasileira de Ciência do Solo, 2004, 29(2005), 1, Seite 109-116 |
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Übergeordnetes Werk: |
volume:29 ; year:2005 ; number:1 ; pages:109-116 |
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Link aufrufen |
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DOI / URN: |
10.1590/S0100-06832005000100012 |
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DOAJ053523059 |
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520 | |a A utilização do lodo de esgoto, como fonte de nutrientes para as plantas, pode ser limitada pela presença de metais, que podem causar contaminação no solo, nos aqüíferos e nas plantas. Lodo de esgoto urbano produzido na Estação de Tratamento da Ilha do Governador (ETIG), Rio de Janeiro (RJ), foi enriquecido com 1.667 mg kg-1 de Cd e 8.000 mg kg-1 de Zn e, após 20 dias de incubação, sob umidade constante (50 % g g-1), foi utilizado em doses de 0, 20, 40 e 80 t ha-1, em amostras de dois solos: Latossolo Vermelho-Amarelo (LV) e Argissolo Vermelho-Amarelo (PV). Para avaliar o efeito do Cd e do Zn no crescimento de arroz (IAC-47) foi feito um experimento em casa de vegetação, durante 126 dias, com amostras dos solos LV e PV incubadas com o lodo de esgoto enriquecido. Adotou-se um delineamento experimental de blocos ao acaso com quatro repetições. Foram coletados raízes, folhas e grãos e determinados a produção de matéria seca e teores de Cd e Zn. As elevadas doses de Cd e Zn aplicadas no solo, decorrentes da aplicação do lodo de esgoto, não mostraram efeito na produção de matéria seca; nas plantas, os metais concentraram-se nas raízes, com baixa translocação para as folhas. Os níveis de Cd e de Zn encontrados na planta inteira demonstraram a tolerância da variedade de arroz IAC-47 a elevados teores de Cd e Zn.<br<The presence of heavy metals can restrict the use of sewage sludge as a source for plant nutrients since they may contaminate soil, aquifers and plants. Urban sewage sludge from the Treatment Station of Ilha do Governador (ETIG), Rio de Janeiro, Brazil, was enriched with 1.667 mg kg-1 Cd and 8.000 mg kg-1 Zn. After 20 days of incubation under a constant humidity of 50% (g g-1), doses of 0, 20, 40 and 80 t ha-1 were applied to two soil samples (red-yellow Latosol (LV) and red-yellow Argisol (PV)). A greenhouse experiment evaluated the effect of Cd and Zn on the growth of rice (IAC-47) during 126 days in the samples of both soils incubated with the enriched sewage sludge. A complete randomized block design was used with four replications. Plant roots, straw and grains and their respective biomass (dry matter) and Cd and Zn concentrations were evaluated at harvest. The high Cd and Zn doses applied to the soil did not affect plant growth but the plant roots showed high Cd and Zn concentrations as a consequence of the low transference of these elements to the spoots. The Cd and Zn levels found in the whole plant demonstrate a high tolerance of the rice variety IAC-47 to these elements. | ||
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10.1590/S0100-06832005000100012 doi (DE-627)DOAJ053523059 (DE-599)DOAJeeff3231d8c04058a3670607ea2bb542 DE-627 ger DE-627 rakwb eng S1-972 Clarice de Oliveira verfasserin aut Efeitos da aplicação do lodo de esgoto enriquecido com cádmio e zinco na cultura do arroz Effects of the application of cadmium and zinc-enriched sewage sludge on rice 2005 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier A utilização do lodo de esgoto, como fonte de nutrientes para as plantas, pode ser limitada pela presença de metais, que podem causar contaminação no solo, nos aqüíferos e nas plantas. Lodo de esgoto urbano produzido na Estação de Tratamento da Ilha do Governador (ETIG), Rio de Janeiro (RJ), foi enriquecido com 1.667 mg kg-1 de Cd e 8.000 mg kg-1 de Zn e, após 20 dias de incubação, sob umidade constante (50 % g g-1), foi utilizado em doses de 0, 20, 40 e 80 t ha-1, em amostras de dois solos: Latossolo Vermelho-Amarelo (LV) e Argissolo Vermelho-Amarelo (PV). Para avaliar o efeito do Cd e do Zn no crescimento de arroz (IAC-47) foi feito um experimento em casa de vegetação, durante 126 dias, com amostras dos solos LV e PV incubadas com o lodo de esgoto enriquecido. Adotou-se um delineamento experimental de blocos ao acaso com quatro repetições. Foram coletados raízes, folhas e grãos e determinados a produção de matéria seca e teores de Cd e Zn. As elevadas doses de Cd e Zn aplicadas no solo, decorrentes da aplicação do lodo de esgoto, não mostraram efeito na produção de matéria seca; nas plantas, os metais concentraram-se nas raízes, com baixa translocação para as folhas. Os níveis de Cd e de Zn encontrados na planta inteira demonstraram a tolerância da variedade de arroz IAC-47 a elevados teores de Cd e Zn.<br<The presence of heavy metals can restrict the use of sewage sludge as a source for plant nutrients since they may contaminate soil, aquifers and plants. Urban sewage sludge from the Treatment Station of Ilha do Governador (ETIG), Rio de Janeiro, Brazil, was enriched with 1.667 mg kg-1 Cd and 8.000 mg kg-1 Zn. After 20 days of incubation under a constant humidity of 50% (g g-1), doses of 0, 20, 40 and 80 t ha-1 were applied to two soil samples (red-yellow Latosol (LV) and red-yellow Argisol (PV)). A greenhouse experiment evaluated the effect of Cd and Zn on the growth of rice (IAC-47) during 126 days in the samples of both soils incubated with the enriched sewage sludge. A complete randomized block design was used with four replications. Plant roots, straw and grains and their respective biomass (dry matter) and Cd and Zn concentrations were evaluated at harvest. The high Cd and Zn doses applied to the soil did not affect plant growth but the plant roots showed high Cd and Zn concentrations as a consequence of the low transference of these elements to the spoots. The Cd and Zn levels found in the whole plant demonstrate a high tolerance of the rice variety IAC-47 to these elements. metais pesados contaminação do solo Oryza sativa heavy metals soil contamination Agriculture (General) Nelson Moura Brasil do Amaral Sobrinho verfasserin aut Valter dos Santos Marques verfasserin aut Nelson Mazur verfasserin aut In Revista Brasileira de Ciência do Solo Sociedade Brasileira de Ciência do Solo, 2004 29(2005), 1, Seite 109-116 (DE-627)387480218 (DE-600)2145594-6 18069657 nnns volume:29 year:2005 number:1 pages:109-116 https://doi.org/10.1590/S0100-06832005000100012 kostenfrei https://doaj.org/article/eeff3231d8c04058a3670607ea2bb542 kostenfrei http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832005000100012 kostenfrei https://doaj.org/toc/0100-0683 Journal toc kostenfrei https://doaj.org/toc/1806-9657 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 29 2005 1 109-116 |
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10.1590/S0100-06832005000100012 doi (DE-627)DOAJ053523059 (DE-599)DOAJeeff3231d8c04058a3670607ea2bb542 DE-627 ger DE-627 rakwb eng S1-972 Clarice de Oliveira verfasserin aut Efeitos da aplicação do lodo de esgoto enriquecido com cádmio e zinco na cultura do arroz Effects of the application of cadmium and zinc-enriched sewage sludge on rice 2005 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier A utilização do lodo de esgoto, como fonte de nutrientes para as plantas, pode ser limitada pela presença de metais, que podem causar contaminação no solo, nos aqüíferos e nas plantas. Lodo de esgoto urbano produzido na Estação de Tratamento da Ilha do Governador (ETIG), Rio de Janeiro (RJ), foi enriquecido com 1.667 mg kg-1 de Cd e 8.000 mg kg-1 de Zn e, após 20 dias de incubação, sob umidade constante (50 % g g-1), foi utilizado em doses de 0, 20, 40 e 80 t ha-1, em amostras de dois solos: Latossolo Vermelho-Amarelo (LV) e Argissolo Vermelho-Amarelo (PV). Para avaliar o efeito do Cd e do Zn no crescimento de arroz (IAC-47) foi feito um experimento em casa de vegetação, durante 126 dias, com amostras dos solos LV e PV incubadas com o lodo de esgoto enriquecido. Adotou-se um delineamento experimental de blocos ao acaso com quatro repetições. Foram coletados raízes, folhas e grãos e determinados a produção de matéria seca e teores de Cd e Zn. As elevadas doses de Cd e Zn aplicadas no solo, decorrentes da aplicação do lodo de esgoto, não mostraram efeito na produção de matéria seca; nas plantas, os metais concentraram-se nas raízes, com baixa translocação para as folhas. Os níveis de Cd e de Zn encontrados na planta inteira demonstraram a tolerância da variedade de arroz IAC-47 a elevados teores de Cd e Zn.<br<The presence of heavy metals can restrict the use of sewage sludge as a source for plant nutrients since they may contaminate soil, aquifers and plants. Urban sewage sludge from the Treatment Station of Ilha do Governador (ETIG), Rio de Janeiro, Brazil, was enriched with 1.667 mg kg-1 Cd and 8.000 mg kg-1 Zn. After 20 days of incubation under a constant humidity of 50% (g g-1), doses of 0, 20, 40 and 80 t ha-1 were applied to two soil samples (red-yellow Latosol (LV) and red-yellow Argisol (PV)). A greenhouse experiment evaluated the effect of Cd and Zn on the growth of rice (IAC-47) during 126 days in the samples of both soils incubated with the enriched sewage sludge. A complete randomized block design was used with four replications. Plant roots, straw and grains and their respective biomass (dry matter) and Cd and Zn concentrations were evaluated at harvest. The high Cd and Zn doses applied to the soil did not affect plant growth but the plant roots showed high Cd and Zn concentrations as a consequence of the low transference of these elements to the spoots. The Cd and Zn levels found in the whole plant demonstrate a high tolerance of the rice variety IAC-47 to these elements. metais pesados contaminação do solo Oryza sativa heavy metals soil contamination Agriculture (General) Nelson Moura Brasil do Amaral Sobrinho verfasserin aut Valter dos Santos Marques verfasserin aut Nelson Mazur verfasserin aut In Revista Brasileira de Ciência do Solo Sociedade Brasileira de Ciência do Solo, 2004 29(2005), 1, Seite 109-116 (DE-627)387480218 (DE-600)2145594-6 18069657 nnns volume:29 year:2005 number:1 pages:109-116 https://doi.org/10.1590/S0100-06832005000100012 kostenfrei https://doaj.org/article/eeff3231d8c04058a3670607ea2bb542 kostenfrei http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832005000100012 kostenfrei https://doaj.org/toc/0100-0683 Journal toc kostenfrei https://doaj.org/toc/1806-9657 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 29 2005 1 109-116 |
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10.1590/S0100-06832005000100012 doi (DE-627)DOAJ053523059 (DE-599)DOAJeeff3231d8c04058a3670607ea2bb542 DE-627 ger DE-627 rakwb eng S1-972 Clarice de Oliveira verfasserin aut Efeitos da aplicação do lodo de esgoto enriquecido com cádmio e zinco na cultura do arroz Effects of the application of cadmium and zinc-enriched sewage sludge on rice 2005 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier A utilização do lodo de esgoto, como fonte de nutrientes para as plantas, pode ser limitada pela presença de metais, que podem causar contaminação no solo, nos aqüíferos e nas plantas. Lodo de esgoto urbano produzido na Estação de Tratamento da Ilha do Governador (ETIG), Rio de Janeiro (RJ), foi enriquecido com 1.667 mg kg-1 de Cd e 8.000 mg kg-1 de Zn e, após 20 dias de incubação, sob umidade constante (50 % g g-1), foi utilizado em doses de 0, 20, 40 e 80 t ha-1, em amostras de dois solos: Latossolo Vermelho-Amarelo (LV) e Argissolo Vermelho-Amarelo (PV). Para avaliar o efeito do Cd e do Zn no crescimento de arroz (IAC-47) foi feito um experimento em casa de vegetação, durante 126 dias, com amostras dos solos LV e PV incubadas com o lodo de esgoto enriquecido. Adotou-se um delineamento experimental de blocos ao acaso com quatro repetições. Foram coletados raízes, folhas e grãos e determinados a produção de matéria seca e teores de Cd e Zn. As elevadas doses de Cd e Zn aplicadas no solo, decorrentes da aplicação do lodo de esgoto, não mostraram efeito na produção de matéria seca; nas plantas, os metais concentraram-se nas raízes, com baixa translocação para as folhas. Os níveis de Cd e de Zn encontrados na planta inteira demonstraram a tolerância da variedade de arroz IAC-47 a elevados teores de Cd e Zn.<br<The presence of heavy metals can restrict the use of sewage sludge as a source for plant nutrients since they may contaminate soil, aquifers and plants. Urban sewage sludge from the Treatment Station of Ilha do Governador (ETIG), Rio de Janeiro, Brazil, was enriched with 1.667 mg kg-1 Cd and 8.000 mg kg-1 Zn. After 20 days of incubation under a constant humidity of 50% (g g-1), doses of 0, 20, 40 and 80 t ha-1 were applied to two soil samples (red-yellow Latosol (LV) and red-yellow Argisol (PV)). A greenhouse experiment evaluated the effect of Cd and Zn on the growth of rice (IAC-47) during 126 days in the samples of both soils incubated with the enriched sewage sludge. A complete randomized block design was used with four replications. Plant roots, straw and grains and their respective biomass (dry matter) and Cd and Zn concentrations were evaluated at harvest. The high Cd and Zn doses applied to the soil did not affect plant growth but the plant roots showed high Cd and Zn concentrations as a consequence of the low transference of these elements to the spoots. The Cd and Zn levels found in the whole plant demonstrate a high tolerance of the rice variety IAC-47 to these elements. metais pesados contaminação do solo Oryza sativa heavy metals soil contamination Agriculture (General) Nelson Moura Brasil do Amaral Sobrinho verfasserin aut Valter dos Santos Marques verfasserin aut Nelson Mazur verfasserin aut In Revista Brasileira de Ciência do Solo Sociedade Brasileira de Ciência do Solo, 2004 29(2005), 1, Seite 109-116 (DE-627)387480218 (DE-600)2145594-6 18069657 nnns volume:29 year:2005 number:1 pages:109-116 https://doi.org/10.1590/S0100-06832005000100012 kostenfrei https://doaj.org/article/eeff3231d8c04058a3670607ea2bb542 kostenfrei http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832005000100012 kostenfrei https://doaj.org/toc/0100-0683 Journal toc kostenfrei https://doaj.org/toc/1806-9657 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 29 2005 1 109-116 |
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10.1590/S0100-06832005000100012 doi (DE-627)DOAJ053523059 (DE-599)DOAJeeff3231d8c04058a3670607ea2bb542 DE-627 ger DE-627 rakwb eng S1-972 Clarice de Oliveira verfasserin aut Efeitos da aplicação do lodo de esgoto enriquecido com cádmio e zinco na cultura do arroz Effects of the application of cadmium and zinc-enriched sewage sludge on rice 2005 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier A utilização do lodo de esgoto, como fonte de nutrientes para as plantas, pode ser limitada pela presença de metais, que podem causar contaminação no solo, nos aqüíferos e nas plantas. Lodo de esgoto urbano produzido na Estação de Tratamento da Ilha do Governador (ETIG), Rio de Janeiro (RJ), foi enriquecido com 1.667 mg kg-1 de Cd e 8.000 mg kg-1 de Zn e, após 20 dias de incubação, sob umidade constante (50 % g g-1), foi utilizado em doses de 0, 20, 40 e 80 t ha-1, em amostras de dois solos: Latossolo Vermelho-Amarelo (LV) e Argissolo Vermelho-Amarelo (PV). Para avaliar o efeito do Cd e do Zn no crescimento de arroz (IAC-47) foi feito um experimento em casa de vegetação, durante 126 dias, com amostras dos solos LV e PV incubadas com o lodo de esgoto enriquecido. Adotou-se um delineamento experimental de blocos ao acaso com quatro repetições. Foram coletados raízes, folhas e grãos e determinados a produção de matéria seca e teores de Cd e Zn. As elevadas doses de Cd e Zn aplicadas no solo, decorrentes da aplicação do lodo de esgoto, não mostraram efeito na produção de matéria seca; nas plantas, os metais concentraram-se nas raízes, com baixa translocação para as folhas. Os níveis de Cd e de Zn encontrados na planta inteira demonstraram a tolerância da variedade de arroz IAC-47 a elevados teores de Cd e Zn.<br<The presence of heavy metals can restrict the use of sewage sludge as a source for plant nutrients since they may contaminate soil, aquifers and plants. Urban sewage sludge from the Treatment Station of Ilha do Governador (ETIG), Rio de Janeiro, Brazil, was enriched with 1.667 mg kg-1 Cd and 8.000 mg kg-1 Zn. After 20 days of incubation under a constant humidity of 50% (g g-1), doses of 0, 20, 40 and 80 t ha-1 were applied to two soil samples (red-yellow Latosol (LV) and red-yellow Argisol (PV)). A greenhouse experiment evaluated the effect of Cd and Zn on the growth of rice (IAC-47) during 126 days in the samples of both soils incubated with the enriched sewage sludge. A complete randomized block design was used with four replications. Plant roots, straw and grains and their respective biomass (dry matter) and Cd and Zn concentrations were evaluated at harvest. The high Cd and Zn doses applied to the soil did not affect plant growth but the plant roots showed high Cd and Zn concentrations as a consequence of the low transference of these elements to the spoots. The Cd and Zn levels found in the whole plant demonstrate a high tolerance of the rice variety IAC-47 to these elements. metais pesados contaminação do solo Oryza sativa heavy metals soil contamination Agriculture (General) Nelson Moura Brasil do Amaral Sobrinho verfasserin aut Valter dos Santos Marques verfasserin aut Nelson Mazur verfasserin aut In Revista Brasileira de Ciência do Solo Sociedade Brasileira de Ciência do Solo, 2004 29(2005), 1, Seite 109-116 (DE-627)387480218 (DE-600)2145594-6 18069657 nnns volume:29 year:2005 number:1 pages:109-116 https://doi.org/10.1590/S0100-06832005000100012 kostenfrei https://doaj.org/article/eeff3231d8c04058a3670607ea2bb542 kostenfrei http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832005000100012 kostenfrei https://doaj.org/toc/0100-0683 Journal toc kostenfrei https://doaj.org/toc/1806-9657 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 29 2005 1 109-116 |
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Efeitos da aplicação do lodo de esgoto enriquecido com cádmio e zinco na cultura do arroz Effects of the application of cadmium and zinc-enriched sewage sludge on rice |
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efeitos da aplicação do lodo de esgoto enriquecido com cádmio e zinco na cultura do arroz effects of the application of cadmium and zinc-enriched sewage sludge on rice |
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Efeitos da aplicação do lodo de esgoto enriquecido com cádmio e zinco na cultura do arroz Effects of the application of cadmium and zinc-enriched sewage sludge on rice |
abstract |
A utilização do lodo de esgoto, como fonte de nutrientes para as plantas, pode ser limitada pela presença de metais, que podem causar contaminação no solo, nos aqüíferos e nas plantas. Lodo de esgoto urbano produzido na Estação de Tratamento da Ilha do Governador (ETIG), Rio de Janeiro (RJ), foi enriquecido com 1.667 mg kg-1 de Cd e 8.000 mg kg-1 de Zn e, após 20 dias de incubação, sob umidade constante (50 % g g-1), foi utilizado em doses de 0, 20, 40 e 80 t ha-1, em amostras de dois solos: Latossolo Vermelho-Amarelo (LV) e Argissolo Vermelho-Amarelo (PV). Para avaliar o efeito do Cd e do Zn no crescimento de arroz (IAC-47) foi feito um experimento em casa de vegetação, durante 126 dias, com amostras dos solos LV e PV incubadas com o lodo de esgoto enriquecido. Adotou-se um delineamento experimental de blocos ao acaso com quatro repetições. Foram coletados raízes, folhas e grãos e determinados a produção de matéria seca e teores de Cd e Zn. As elevadas doses de Cd e Zn aplicadas no solo, decorrentes da aplicação do lodo de esgoto, não mostraram efeito na produção de matéria seca; nas plantas, os metais concentraram-se nas raízes, com baixa translocação para as folhas. Os níveis de Cd e de Zn encontrados na planta inteira demonstraram a tolerância da variedade de arroz IAC-47 a elevados teores de Cd e Zn.<br<The presence of heavy metals can restrict the use of sewage sludge as a source for plant nutrients since they may contaminate soil, aquifers and plants. Urban sewage sludge from the Treatment Station of Ilha do Governador (ETIG), Rio de Janeiro, Brazil, was enriched with 1.667 mg kg-1 Cd and 8.000 mg kg-1 Zn. After 20 days of incubation under a constant humidity of 50% (g g-1), doses of 0, 20, 40 and 80 t ha-1 were applied to two soil samples (red-yellow Latosol (LV) and red-yellow Argisol (PV)). A greenhouse experiment evaluated the effect of Cd and Zn on the growth of rice (IAC-47) during 126 days in the samples of both soils incubated with the enriched sewage sludge. A complete randomized block design was used with four replications. Plant roots, straw and grains and their respective biomass (dry matter) and Cd and Zn concentrations were evaluated at harvest. The high Cd and Zn doses applied to the soil did not affect plant growth but the plant roots showed high Cd and Zn concentrations as a consequence of the low transference of these elements to the spoots. The Cd and Zn levels found in the whole plant demonstrate a high tolerance of the rice variety IAC-47 to these elements. |
abstractGer |
A utilização do lodo de esgoto, como fonte de nutrientes para as plantas, pode ser limitada pela presença de metais, que podem causar contaminação no solo, nos aqüíferos e nas plantas. Lodo de esgoto urbano produzido na Estação de Tratamento da Ilha do Governador (ETIG), Rio de Janeiro (RJ), foi enriquecido com 1.667 mg kg-1 de Cd e 8.000 mg kg-1 de Zn e, após 20 dias de incubação, sob umidade constante (50 % g g-1), foi utilizado em doses de 0, 20, 40 e 80 t ha-1, em amostras de dois solos: Latossolo Vermelho-Amarelo (LV) e Argissolo Vermelho-Amarelo (PV). Para avaliar o efeito do Cd e do Zn no crescimento de arroz (IAC-47) foi feito um experimento em casa de vegetação, durante 126 dias, com amostras dos solos LV e PV incubadas com o lodo de esgoto enriquecido. Adotou-se um delineamento experimental de blocos ao acaso com quatro repetições. Foram coletados raízes, folhas e grãos e determinados a produção de matéria seca e teores de Cd e Zn. As elevadas doses de Cd e Zn aplicadas no solo, decorrentes da aplicação do lodo de esgoto, não mostraram efeito na produção de matéria seca; nas plantas, os metais concentraram-se nas raízes, com baixa translocação para as folhas. Os níveis de Cd e de Zn encontrados na planta inteira demonstraram a tolerância da variedade de arroz IAC-47 a elevados teores de Cd e Zn.<br<The presence of heavy metals can restrict the use of sewage sludge as a source for plant nutrients since they may contaminate soil, aquifers and plants. Urban sewage sludge from the Treatment Station of Ilha do Governador (ETIG), Rio de Janeiro, Brazil, was enriched with 1.667 mg kg-1 Cd and 8.000 mg kg-1 Zn. After 20 days of incubation under a constant humidity of 50% (g g-1), doses of 0, 20, 40 and 80 t ha-1 were applied to two soil samples (red-yellow Latosol (LV) and red-yellow Argisol (PV)). A greenhouse experiment evaluated the effect of Cd and Zn on the growth of rice (IAC-47) during 126 days in the samples of both soils incubated with the enriched sewage sludge. A complete randomized block design was used with four replications. Plant roots, straw and grains and their respective biomass (dry matter) and Cd and Zn concentrations were evaluated at harvest. The high Cd and Zn doses applied to the soil did not affect plant growth but the plant roots showed high Cd and Zn concentrations as a consequence of the low transference of these elements to the spoots. The Cd and Zn levels found in the whole plant demonstrate a high tolerance of the rice variety IAC-47 to these elements. |
abstract_unstemmed |
A utilização do lodo de esgoto, como fonte de nutrientes para as plantas, pode ser limitada pela presença de metais, que podem causar contaminação no solo, nos aqüíferos e nas plantas. Lodo de esgoto urbano produzido na Estação de Tratamento da Ilha do Governador (ETIG), Rio de Janeiro (RJ), foi enriquecido com 1.667 mg kg-1 de Cd e 8.000 mg kg-1 de Zn e, após 20 dias de incubação, sob umidade constante (50 % g g-1), foi utilizado em doses de 0, 20, 40 e 80 t ha-1, em amostras de dois solos: Latossolo Vermelho-Amarelo (LV) e Argissolo Vermelho-Amarelo (PV). Para avaliar o efeito do Cd e do Zn no crescimento de arroz (IAC-47) foi feito um experimento em casa de vegetação, durante 126 dias, com amostras dos solos LV e PV incubadas com o lodo de esgoto enriquecido. Adotou-se um delineamento experimental de blocos ao acaso com quatro repetições. Foram coletados raízes, folhas e grãos e determinados a produção de matéria seca e teores de Cd e Zn. As elevadas doses de Cd e Zn aplicadas no solo, decorrentes da aplicação do lodo de esgoto, não mostraram efeito na produção de matéria seca; nas plantas, os metais concentraram-se nas raízes, com baixa translocação para as folhas. Os níveis de Cd e de Zn encontrados na planta inteira demonstraram a tolerância da variedade de arroz IAC-47 a elevados teores de Cd e Zn.<br<The presence of heavy metals can restrict the use of sewage sludge as a source for plant nutrients since they may contaminate soil, aquifers and plants. Urban sewage sludge from the Treatment Station of Ilha do Governador (ETIG), Rio de Janeiro, Brazil, was enriched with 1.667 mg kg-1 Cd and 8.000 mg kg-1 Zn. After 20 days of incubation under a constant humidity of 50% (g g-1), doses of 0, 20, 40 and 80 t ha-1 were applied to two soil samples (red-yellow Latosol (LV) and red-yellow Argisol (PV)). A greenhouse experiment evaluated the effect of Cd and Zn on the growth of rice (IAC-47) during 126 days in the samples of both soils incubated with the enriched sewage sludge. A complete randomized block design was used with four replications. Plant roots, straw and grains and their respective biomass (dry matter) and Cd and Zn concentrations were evaluated at harvest. The high Cd and Zn doses applied to the soil did not affect plant growth but the plant roots showed high Cd and Zn concentrations as a consequence of the low transference of these elements to the spoots. The Cd and Zn levels found in the whole plant demonstrate a high tolerance of the rice variety IAC-47 to these elements. |
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Efeitos da aplicação do lodo de esgoto enriquecido com cádmio e zinco na cultura do arroz Effects of the application of cadmium and zinc-enriched sewage sludge on rice |
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