Effects of agriculture on ground water in a recharge area of Guarany Aquifer in Brazil.

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dc.contributorANTONIO LUIZ CERDEIRA, CNPMA; MARIA CONCEICAO PERES YOUNG PESSOA, CNPMA; Denizart Bolonhezi, IAC; MARCO ANTONIO FERREIRA GOMES, CNPMA; CLAUDIO APARECIDO SPADOTTO, SGTE; MANOEL DORNELAS DE SOUZA, CNPMA; VERA LUCIA FERRACINI, CNPMA; Regina Helena C. Queiroz, Faculdade de Farmácia-USP; Vera Lúcia Lanchote, Faculdade de Farmácia-USP; SONIA CLAUDIA DO N DE QUEIROZ, CNPMA; Carlos F. Neto, DAERP, Water Service Department, Ribeirão Preto, SP, Brazil.
dc.creatorCERDEIRA, A. L.
dc.creatorPESSOA, M. C. P. Y.
dc.creatorBOLONHEZI, D.
dc.creatorGOMES, M. A. F.
dc.creatorSPADOTTO, C. A.
dc.creatorSOUZA, M. D. de
dc.creatorFERRACINI, V. L.
dc.creatorQUEIROZ, R. H. C.
dc.creatorLANCHOTE, V. L.
dc.creatorQUEIROZ, S. C. do N. de
dc.creatorF. NETO, C.
dc.date2011-04-10T11:11:11Z
dc.date2011-04-10T11:11:11Z
dc.date2008-01-16
dc.date2007
dc.date2015-09-28T11:11:11Z
dc.date.accessioned2026-07-07T04:55:43Z
dc.descriptionThe region of Ribeirão Preto City located in São Paulo State, southeastern Brazil, is an important and highly mechanized sugar cane producing area. It is also an important recharge area of the Guarany aquifer, which provides water to several cities and rural communities in the region. Research has been conducted in this region since 1995 to assess the behavior of herbicides, such as atrazine, simazine, ametryn, tebuthiuron, diuron, 2,4-D, picloram, and hexazinone, applied in the area. Nitrate applied as nitrogen fertilizer was also evaluated. Espraiado watershed, located over the recharge area, was chosen for this study. Water samples were collected from seven wells located inside the watershed and from surface water of Espraiado stream. Other samples were taken from city wells located at the edge of the recharge area with exception of the control samples that were collected from downtown wells. Results have shown that no residue of herbicide was found in ground water wells and only ametryn was found at levels higher than the Maximum Concentration Level (MCL) of 0.1 ?g/L in surface water of the watershed. However, nitrate was detected at levels close to the MCL of 10 mg/L in wells located in downtown, far away from the sugar cane area.
dc.identifierIn: ANNUAL MISSISSIPPI WATER RESOURCES CONFERENCE, 37., 2007, Jackson. Publications... Jackson: Mississippi State University, 2007. p.120-125.
dc.identifierhttp://www.alice.cnptia.embrapa.br/alice/handle/doc/15666
dc.identifier.urihttp://hdl.handle.net/123456789/474799
dc.languageeng
dc.rightsopenAccess
dc.subjectÁguas subterrâneas
dc.subjectPoluição da água
dc.subjectQualidade da água
dc.subjectAgricultura
dc.subjectWater pollution
dc.subjectGroundwater contamination
dc.subjectAgriculture
dc.subjectSoil transport processes
dc.titleEffects of agriculture on ground water in a recharge area of Guarany Aquifer in Brazil.
dc.typeArtigo em anais e proceedings

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