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Registro Completo |
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
20/07/1999 |
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Data da última atualização: |
02/09/2015 |
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Autoria: |
SILVA, C. M. M. S.; COELHO, K. C.; VIEIRA, R. F.; MAIA, A. de H. N. |
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Afiliação: |
CÉLIA M. M. SILVA, EMBRAPA -CNPMA; ROSANA FARIA VIEIRA, CNPMA; ALINE DE HOLANDA NUNES MAIA, CNPMA. |
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Título: |
Measurement of fungi population in soil treated with the fungicide chlorothalonil. |
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Ano de publicação: |
1999 |
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Fonte/Imprenta: |
In: ANNUAL MEETING OF SETAC-EUROPE, 9., 1999, Leipzig, Germany. Quality of life and environment in cultured landscapes - abstracts. Leipzig: SETAC, 1999. |
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Páginas: |
p.227 |
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Idioma: |
Inglês |
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Conteúdo: |
The chlorothalonil is a fungicide widely used in Brazil. This fungicide acts on the thiol groups of enzymes being therefore a nonsystemic broad-spectrum fungicide. Strong damages due to the application of the fungicides in the soil can occur to the fungi population, which are important to the terrestrial ecosystem. Several techniques have been described to quantify fungi in soil but serious sources of error exist in all of these techniques. The microbial biomass C, the soil ergosterol content and the living hyphal length were used to verify the effect of five doses of chlorothalonil on the fungi population. The results demostrated that the use of microbial biomass C, as an isolated factor, is not suited for verification of the toxic effect of the chlorothalonil on the soil fungi population comparatively to the other two techniques. The soil ergosterol content seems to be the parameter more adequate to obtain results differentiated on the fungi population, when we consider different doses. As the ergosterol content varies with the age of fungi, for a better interpretation of the results, another one that indicates growth of the soil microflora should accompany the parameter soil ergosterol content. The living hyphal length was the parameter that supplied the largest answer width in relation to the effect of the chlorothalonil on the soil fungi population, although not statistically different among doses during the period sampled. In any way the use of this late technique as comparison measurement among soils treated or not with fungicides seems appropriate, cheap, and fast. MenosThe chlorothalonil is a fungicide widely used in Brazil. This fungicide acts on the thiol groups of enzymes being therefore a nonsystemic broad-spectrum fungicide. Strong damages due to the application of the fungicides in the soil can occur to the fungi population, which are important to the terrestrial ecosystem. Several techniques have been described to quantify fungi in soil but serious sources of error exist in all of these techniques. The microbial biomass C, the soil ergosterol content and the living hyphal length were used to verify the effect of five doses of chlorothalonil on the fungi population. The results demostrated that the use of microbial biomass C, as an isolated factor, is not suited for verification of the toxic effect of the chlorothalonil on the soil fungi population comparatively to the other two techniques. The soil ergosterol content seems to be the parameter more adequate to obtain results differentiated on the fungi population, when we consider different doses. As the ergosterol content varies with the age of fungi, for a better interpretation of the results, another one that indicates growth of the soil microflora should accompany the parameter soil ergosterol content. The living hyphal length was the parameter that supplied the largest answer width in relation to the effect of the chlorothalonil on the soil fungi population, although not statistically different among doses during the period sampled. In any way the use of this late technique as c... Mostrar Tudo |
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Palavras-Chave: |
Fungicide chlorothalonil. |
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Thesaurus Nal: |
chlorothalonil. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02251naa a2200193 a 4500
001 1013135
005 2015-09-02
008 1999 bl --- 0-- u #d
100 1 $aSILVA, C. M. M. S.
245 $aMeasurement of fungi population in soil treated with the fungicide chlorothalonil.
260 $c1999
300 $ap.227
520 $aThe chlorothalonil is a fungicide widely used in Brazil. This fungicide acts on the thiol groups of enzymes being therefore a nonsystemic broad-spectrum fungicide. Strong damages due to the application of the fungicides in the soil can occur to the fungi population, which are important to the terrestrial ecosystem. Several techniques have been described to quantify fungi in soil but serious sources of error exist in all of these techniques. The microbial biomass C, the soil ergosterol content and the living hyphal length were used to verify the effect of five doses of chlorothalonil on the fungi population. The results demostrated that the use of microbial biomass C, as an isolated factor, is not suited for verification of the toxic effect of the chlorothalonil on the soil fungi population comparatively to the other two techniques. The soil ergosterol content seems to be the parameter more adequate to obtain results differentiated on the fungi population, when we consider different doses. As the ergosterol content varies with the age of fungi, for a better interpretation of the results, another one that indicates growth of the soil microflora should accompany the parameter soil ergosterol content. The living hyphal length was the parameter that supplied the largest answer width in relation to the effect of the chlorothalonil on the soil fungi population, although not statistically different among doses during the period sampled. In any way the use of this late technique as comparison measurement among soils treated or not with fungicides seems appropriate, cheap, and fast.
650 $achlorothalonil
653 $aFungicide chlorothalonil
700 1 $aCOELHO, K. C.
700 1 $aVIEIRA, R. F.
700 1 $aMAIA, A. de H. N.
773 $tIn: ANNUAL MEETING OF SETAC-EUROPE, 9., 1999, Leipzig, Germany. Quality of life and environment in cultured landscapes - abstracts. Leipzig: SETAC, 1999.
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Registro original: |
Embrapa Meio Ambiente (CNPMA) |
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| Registros recuperados : 332 | |
| 122. |  | HAMADA, E.; MAIA, A. de H. N.; LUIZ, A. J. B. Similaridade das projeções de temperatura média, precipitação e umidade relativa para o nordeste brasileiro. In: SEMINÁRIO DA REDE AGROHIDRO, 3.; WORKSHOP DO PROJETO OS IMPACTOS DA AGRICULTURA E DAS MUDANÇAS CLIMÁTICAS NOS RECURSOS HÍDRICOS, 1., 2015, Corumbá, MS. Água na agricultura: desafios frente às mudanças climáticas e de uso da terra: resumos. Corumbá: Embrapa Pantanal, 2015. 58| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Meio Ambiente. |
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| 124. | | MAIA, A. de H. N.; NARCISO, M. G.; DOURADO NETO, D. Sistema para avaliação de risco de resistência de insetos a toxinas Bt expressas em culturas transgênicas. iN: CONGRESSO BRASILEIRO DE AGROINFORMÁTICA, 11., 2017, Campinas. Ciência de dados na era da agricultura digital: anais. Campinas, Editora da Unicamp: Embrapa Informática Agropecuária, 2017. Organizadores: Jayme Garcia Arnal Barbedo, Maria Fernanda Moura, Luciana Alvim Santos Romani, Thiago Teixeira Santos, Débora Pignatari Drucker. SBIAgro 2017. p. 307-316| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Meio Ambiente. |
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| 132. | | PARAIBA, L. C.; CASTRO, V. L. S. S. de; MAIA, A. de H. N. Estimates of insecticide percent distribution among human tissues. In: CONGRESO IBÉRICO, 6., IBEROAMERICANO DE CONTAMINACIÓN Y TOXICOLOGÍA AMBIENTAL – CICTA, 3., 2005, Cádiz, Spain. The environment: a challenge for the scientific research: abstracts. Cádiz, Spain: CICTA, 2005. p. 28.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Meio Ambiente. |
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| 136. | | SOUZA, F. X. de; COSTA, J. T. A.; COELHO, E. L.; MAIA, A. de H. N. Comportamento vegetativo e reprodutivo de clones de cajazeira cultivados na Chapada do Apodi, Ceará. Revista Ciência Agronômica, Fortaleza, v. 43, n. 2, p. 293-300, 2012.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
| Biblioteca(s): Embrapa Agroindústria Tropical; Embrapa Meio Ambiente. |
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| Registros recuperados : 332 | |
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