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| Registros recuperados : 7 | |
| 1. |  | XAVIER, G. R.; RUMJANEK, N. G.; SANTOS, C. E, de R. e S.; FREITAS, A. D. S. de; SILVA, V, S, G. da; SILVA, A. F. da; FERREIRA, J. da S.; STAMFORD, N. P.; MARTINS, L. M. V.; LEITE, J.; MORGADO, L. B.; ALCANTARA, R. M. C. M. de. Agronomic effectiveness of rhizobia strains on cowpea in two consecutive years. Australian Journal of Crop Science, v. 11, n. 9, p. 1154-1160, 2017.| Biblioteca(s): Embrapa Agrobiologia; Embrapa Meio-Norte. |
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| 2. | | LEITE, L. F. C.; FERREIRA, J. da S.; VELOSO, M. E. da C.; MOUSINHO, F. E. P.; ROCHA JUNIOR, A. F. Variabilidade espacial das frações da matéria orgânica do solo em área degradada sob recuperação. Revista Brasileira de Engenharia Agrícola e Ambiental, Campina Grande, v. 19, n. 4, p. 394-401, 2015.| Biblioteca(s): Embrapa Meio-Norte. |
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| 3. | | LEITE, L. F. C.; ARRUDA, F. P. de; COSTA, C. do N.; FERREIRA, J. da S.; HOLANDA NETO, M. R. Qualidade química do solo e dinâmica de carbono sob monocultivo e consórcio de macaúba e pastagem. Revista Brasileira de Engenharia Agrícola e Ambiental, Campina Grande, v. 17, n. 12, p. 1257-1263, 2013.| Biblioteca(s): Embrapa Meio-Norte. |
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| 4. | | FERREIRA, J. da S.; LEITE, L. F. C.; VELOSO, M. E. da C.; ROCHA JUNIOR, A. F.; MOUSINHO, F. E. P.; SANTOS, W. D. da C.; FELIPE, E. A. Distribuição espacial das frações lábeis e estáveis da matéria orgânica em um argissolo sob processo de desertificação em Gilbués - Piauí. ENCONTRO BRASILEIRO DE SUBSTÂNCIAS HÚMICAS, 9., 2011, Aracaju. Matéria orgânica natural e substâncias húmicas: dos avanços das técnicas de caracterização ao seqüestro de C: anais. [Aracaju: UFS: IHSS, 2011]. 1 CD-ROM.| Biblioteca(s): Embrapa Cerrados. |
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| 5. | | FERREIRA, J. da S.; LEITE, L. F. C.; VELOSO, M. E. da C.; ROCHA JUNIOR, A. F. da; SANTOS, W. D. da C.; MOUSINHO, F. E. P. Variabilidade espacial do carbono orgânico total e da biomassa microbiana em uma área degradada em Gilbués-PI. In: CONGRESSO BRASILEIRO DE CIÊNCIA DO SOLO, 33., 2011, Uberlândia. Solos nos biomas brasileiros: sustentabilidade e mudanças climáticas. Uberlândia: Sociedade Brasileira de Ciência do Solo, 2011. 4 p.| Biblioteca(s): Embrapa Meio-Norte. |
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| 6. | | COSTA, R. B. da; RESENDE, M. D. V. de; FERREIRA, J. da S.; CONTINI, A. Z.; REGO, F. L. H.; ROA, R. A. R.; MARTINS, W. J. Avaliação genética de progênies de leucena: contribuição para estabelecimento de SAF´S na reserva indígena Kaiowá e Guarani, em Caarapó, MS. In: CONGRESSO BRASILEIRO DE SISTEMAS AGROFLORESTAIS, 5., 2004, Curitiba. SAFs: desenvolvimento com proteção ambiental: anais. Colombo: Embrapa Florestas, 2004. p. 274-276 (Embrapa Florestas. Documentos, 98).| Biblioteca(s): Embrapa Florestas. |
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| Registros recuperados : 7 | |
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Registro Completo
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
04/08/1999 |
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Data da última atualização: |
12/12/2019 |
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Autoria: |
CERDEIRA, A. L.; GOMES, M. A. F.; QUEIROZ, R. C.; BONATO, P. S.; FERRACINI, V. L.; LANCHOTE, V. L. |
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Afiliação: |
ANTONIO LUIZ CERDEIRA, CNPMA; MARCO ANTONIO FERREIRA GOMES, CNPMA; VERA LUCIA FERRACINI, CNPMA. |
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Título: |
Herbicide and nitrate residues in surface and groundwater from sugarcane area in Brazil. |
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Ano de publicação: |
1999 |
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Fonte/Imprenta: |
Bolletino Chimico Farmaceutico, v.138, n.2, p.131, 1999. |
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Idioma: |
Inglês |
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Conteúdo: |
Various studies have demonstrated the presence at high levels of pesticides and nitrate in soil, surface, and groundwater. Prior studies have identified a watershed area in Brazil with a high risk of soil, surface, and groundwater contamination by pesticides at the region of Riberao Preto, SP. Surface and groundwater were collected at the area during the period of October 1995 to November 1998. By means of gas chromatography-mass spectrometry (GC-MS) technique the herbicides tebuthiuron, diuron, simazine, atrazine, and ametryne, and nitrate were analyzed according to the protocols established in literature. The recovery obtained in the extraction procedure was higher than 95% for all herbicides except simazine for which the recovery was 85,6%. Due to the enrichment in the extraction procedure and the sensitive detection at two wavelengths it was possible to obtain a quantification limit of 0.02 ug/L for the herbicides studied. The method was linear over the range of 0.02 to 2.0 ug/L. Soil data showed a higher level of the herbicide tebuthiuron, at the levels of 59.6 ppb; than the other applied during all the months. The results have shown the hercicide tebuthiuron as the one with higher concentrations in groundwater and in January of 1996 the concentration found was 0.08 ug/L, close to the maximum allowed, 0.1 ug/L, but this fact was not consistent during the other months. No residue of the other herbicides was detected. In case of nitrates, with maximum level allowed of 10 mg/L, it was found the maximum of 0.9 mg/l, but in a shallow well inside the area. Commercial wells at the edge of the watershed showed low levels of nitrate, below the risk level, but with potential for dangerous contamination. MenosVarious studies have demonstrated the presence at high levels of pesticides and nitrate in soil, surface, and groundwater. Prior studies have identified a watershed area in Brazil with a high risk of soil, surface, and groundwater contamination by pesticides at the region of Riberao Preto, SP. Surface and groundwater were collected at the area during the period of October 1995 to November 1998. By means of gas chromatography-mass spectrometry (GC-MS) technique the herbicides tebuthiuron, diuron, simazine, atrazine, and ametryne, and nitrate were analyzed according to the protocols established in literature. The recovery obtained in the extraction procedure was higher than 95% for all herbicides except simazine for which the recovery was 85,6%. Due to the enrichment in the extraction procedure and the sensitive detection at two wavelengths it was possible to obtain a quantification limit of 0.02 ug/L for the herbicides studied. The method was linear over the range of 0.02 to 2.0 ug/L. Soil data showed a higher level of the herbicide tebuthiuron, at the levels of 59.6 ppb; than the other applied during all the months. The results have shown the hercicide tebuthiuron as the one with higher concentrations in groundwater and in January of 1996 the concentration found was 0.08 ug/L, close to the maximum allowed, 0.1 ug/L, but this fact was not consistent during the other months. No residue of the other herbicides was detected. In case of nitrates, with maximum level allowed of 10 ... Mostrar Tudo |
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Palavras-Chave: |
Herbicidas; Herbicide; Nitrate; Nitrato de resíduos. |
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Thesaurus NAL: |
sugarcane. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/199623/1/Cerdeira-Herbicide.pdf
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Marc: |
LEADER 02418naa a2200241 a 4500
001 1013142
005 2019-12-12
008 1999 bl uuuu u00u1 u #d
100 1 $aCERDEIRA, A. L.
245 $aHerbicide and nitrate residues in surface and groundwater from sugarcane area in Brazil.$h[electronic resource]
260 $c1999
520 $aVarious studies have demonstrated the presence at high levels of pesticides and nitrate in soil, surface, and groundwater. Prior studies have identified a watershed area in Brazil with a high risk of soil, surface, and groundwater contamination by pesticides at the region of Riberao Preto, SP. Surface and groundwater were collected at the area during the period of October 1995 to November 1998. By means of gas chromatography-mass spectrometry (GC-MS) technique the herbicides tebuthiuron, diuron, simazine, atrazine, and ametryne, and nitrate were analyzed according to the protocols established in literature. The recovery obtained in the extraction procedure was higher than 95% for all herbicides except simazine for which the recovery was 85,6%. Due to the enrichment in the extraction procedure and the sensitive detection at two wavelengths it was possible to obtain a quantification limit of 0.02 ug/L for the herbicides studied. The method was linear over the range of 0.02 to 2.0 ug/L. Soil data showed a higher level of the herbicide tebuthiuron, at the levels of 59.6 ppb; than the other applied during all the months. The results have shown the hercicide tebuthiuron as the one with higher concentrations in groundwater and in January of 1996 the concentration found was 0.08 ug/L, close to the maximum allowed, 0.1 ug/L, but this fact was not consistent during the other months. No residue of the other herbicides was detected. In case of nitrates, with maximum level allowed of 10 mg/L, it was found the maximum of 0.9 mg/l, but in a shallow well inside the area. Commercial wells at the edge of the watershed showed low levels of nitrate, below the risk level, but with potential for dangerous contamination.
650 $asugarcane
653 $aHerbicidas
653 $aHerbicide
653 $aNitrate
653 $aNitrato de resíduos
700 1 $aGOMES, M. A. F.
700 1 $aQUEIROZ, R. C.
700 1 $aBONATO, P. S.
700 1 $aFERRACINI, V. L.
700 1 $aLANCHOTE, V. L.
773 $tBolletino Chimico Farmaceutico$gv.138, n.2, p.131, 1999.
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Embrapa Meio Ambiente (CNPMA) |
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