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Registro Completo |
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Biblioteca(s): |
Embrapa Unidades Centrais. |
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Data corrente: |
18/12/2017 |
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Data da última atualização: |
30/03/2023 |
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Autoria: |
FRANCO, H. H. S.; SILVA, A. P. da; TORMENA, C. A.; FERREIRA, C. J. B.; NUNES, M. R.; LIMA, R. P. de; LIBARDI, P. L. |
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Afiliação: |
Hélio Henrique Soares Franco, Universidade Estadual de Maringá; Alvaro Pires da Silva, In memorian; Cássio Antonio Tormena, Universidade Estadual de Maringá; Camila Jorge Bernabé Ferreira, Universidade Estadual de Maringá; Márcio Renato Nunes, Universidade de São Paulo/Escola Superior de Agricultura Luiz de Queiroz; Renato Paiva de Lima, Universidade de São Paulo/Escola Superior de Agricultura Luiz de Queiroz; Paulo Leonel Libardi, Universidade de São Paulo/Escola Superior de Agricultura Luiz de Queiroz. |
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Título: |
Porous cup shape and installation mode influencing determinations of matric potential by tensiometers. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, DF, v. 52, n. 12, p. 1291-1294, dez. 2017. |
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Idioma: |
Inglês |
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Notas: |
Notas Científicas.
Título em português: Formato de cápsula e modo de instalação influenciando determinações do potencial mátrico por tensiômetros. |
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Conteúdo: |
The objective of this work was to determine the measurement accuracy of the soil water matric potential by puncture tensiometers with either rounded or pointed porous cups, installed with or without "soil mud", and to compare the performance of these tensiometers with that of tensiometers equipped with mercury manometers. The experiment was conducted in a Ultisol, in a randomized complete block design, in a factorial arrangement with five replicates. Puncture tensiometers with rounded porous cups, installed with soil mud, present more elevated accuracy for ; determination in a wider measurement range, resembling tensiometers equipped with mercury manometers in drying soil. |
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Palavras-Chave: |
Cápsula arredondada; Lama de solo; Puncture tensiometers; Rounded porous cup; Soil mud; Tensiômetros de punção. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/169225/1/Porous-cup-shape-and-installation.pdf
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Marc: |
LEADER 01689naa a2200277 a 4500
001 2082838
005 2023-03-30
008 2017 bl uuuu u00u1 u #d
100 1 $aFRANCO, H. H. S.
245 $aPorous cup shape and installation mode influencing determinations of matric potential by tensiometers.$h[electronic resource]
260 $c2017
500 $aNotas Científicas. Título em português: Formato de cápsula e modo de instalação influenciando determinações do potencial mátrico por tensiômetros.
520 $aThe objective of this work was to determine the measurement accuracy of the soil water matric potential by puncture tensiometers with either rounded or pointed porous cups, installed with or without "soil mud", and to compare the performance of these tensiometers with that of tensiometers equipped with mercury manometers. The experiment was conducted in a Ultisol, in a randomized complete block design, in a factorial arrangement with five replicates. Puncture tensiometers with rounded porous cups, installed with soil mud, present more elevated accuracy for ; determination in a wider measurement range, resembling tensiometers equipped with mercury manometers in drying soil.
653 $aCápsula arredondada
653 $aLama de solo
653 $aPuncture tensiometers
653 $aRounded porous cup
653 $aSoil mud
653 $aTensiômetros de punção
700 1 $aSILVA, A. P. da
700 1 $aTORMENA, C. A.
700 1 $aFERREIRA, C. J. B.
700 1 $aNUNES, M. R.
700 1 $aLIMA, R. P. de
700 1 $aLIBARDI, P. L.
773 $tPesquisa Agropecuária Brasileira, Brasília, DF$gv. 52, n. 12, p. 1291-1294, dez. 2017.
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Registro original: |
Embrapa Unidades Centrais (AI-SEDE) |
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Voltar
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Florestas. Para informações adicionais entre em contato com cnpf.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
09/10/2017 |
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Data da última atualização: |
17/10/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 5 |
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Autoria: |
AGUIAR JUNIOR, T. R.; BORTOLOZO, F. R.; ROSA FILHO, E. F.; PARRON, L. M.; LUZ, L. D.; BRITO, A. G.; FERREIRA, M. T. |
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Afiliação: |
Terencio R. Aguiar Junior, Bolsista da Embrapa Florestas; F. R. Bortolozo, University of Lisbon, School of Agronomy, Department of Natural Resources, Environment and Landscape, Portugal; E. F. Rosa Filho, University of Lisbon, School of Agronomy, Department of Natural Resources, Environment and Landscape, Portugal; LUCILIA MARIA PARRON VARGAS, CNPF; L. D. Luz, UFBA; A. G. Brito, University of Lisbon, School of Agronomy, Department of Biosystems Sciences and Engineering, Portugal; M. T. Ferreira, UFPR. |
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Título: |
Fate of selected agrochemicals in a tropical karst aquifer: a five-year study. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Groundwater for Sustainable Development, v. 5, p. 187-192, Sept. 2017. |
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DOI: |
http://dx.doi.org/10.1016/j.gsd.2017.06.008 |
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Idioma: |
Português |
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Conteúdo: |
Water contamination by agricultural pollutants is one of the major environmental problems for terrestrial and aquatic life on earth. Recent studies have demonstrated the contamination of karst aquifers by pesticides and agricultural nutrients. However, the predominant research does not adequately address the main destination of these compounds. Also, research is targeted primarily towards Europe and North America. The objective of this study is to assess the fate of selected pesticides along the saturated layers of a karst aquifer, located in a tropical area. During a five-year period, 48 monthly collections were conducted by extracting samples from 24 shallow wells (8?9 m depth) and 24 deep wells (55?60 m depth). A total of 2880 samples were obtained. For all samples physical-chemical and pesticide analyses were performed. We found the presence of atrazine, lambdacyhalothrin, lactofen, fluazifop-p-butyl, chlorpyrifos, nitrate and nitrogen agricultural nutrients. The wells with 8?9 m depth had the highest concentration of the compounds studied in relation to deeper wells at 55?60 m. A significant difference was found regarding the types of pesticide (p<0.05) when comparing shallow and deep wells. Nutrients were also monitored and a decrease in the total nitrogen concentration between the wells with a lower depth (42.9 mg L-1) and the deepest wells (1.2 mg L-1) is observed along the period 2008?2013. |
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Palavras-Chave: |
Aquífero; Karst aquifer. |
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Thesagro: |
Lençol freático. |
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Thesaurus NAL: |
Aquifers; Groundwater contamination; pesticides. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 02260naa a2200277 a 4500
001 2076997
005 2017-10-17
008 2017 bl uuuu u00u1 u #d
024 7 $ahttp://dx.doi.org/10.1016/j.gsd.2017.06.008$2DOI
100 1 $aAGUIAR JUNIOR, T. R.
245 $aFate of selected agrochemicals in a tropical karst aquifer$ba five-year study.$h[electronic resource]
260 $c2017
520 $aWater contamination by agricultural pollutants is one of the major environmental problems for terrestrial and aquatic life on earth. Recent studies have demonstrated the contamination of karst aquifers by pesticides and agricultural nutrients. However, the predominant research does not adequately address the main destination of these compounds. Also, research is targeted primarily towards Europe and North America. The objective of this study is to assess the fate of selected pesticides along the saturated layers of a karst aquifer, located in a tropical area. During a five-year period, 48 monthly collections were conducted by extracting samples from 24 shallow wells (8?9 m depth) and 24 deep wells (55?60 m depth). A total of 2880 samples were obtained. For all samples physical-chemical and pesticide analyses were performed. We found the presence of atrazine, lambdacyhalothrin, lactofen, fluazifop-p-butyl, chlorpyrifos, nitrate and nitrogen agricultural nutrients. The wells with 8?9 m depth had the highest concentration of the compounds studied in relation to deeper wells at 55?60 m. A significant difference was found regarding the types of pesticide (p<0.05) when comparing shallow and deep wells. Nutrients were also monitored and a decrease in the total nitrogen concentration between the wells with a lower depth (42.9 mg L-1) and the deepest wells (1.2 mg L-1) is observed along the period 2008?2013.
650 $aAquifers
650 $aGroundwater contamination
650 $apesticides
650 $aLençol freático
653 $aAquífero
653 $aKarst aquifer
700 1 $aBORTOLOZO, F. R.
700 1 $aROSA FILHO, E. F.
700 1 $aPARRON, L. M.
700 1 $aLUZ, L. D.
700 1 $aBRITO, A. G.
700 1 $aFERREIRA, M. T.
773 $tGroundwater for Sustainable Development$gv. 5, p. 187-192, Sept. 2017.
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