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Effects of tillage systems on triazine herbicides leaching on Guarany Aquifer in Brazil. Repositório Alice
CERDEIRA, A. L.; SOUZA, M. D. de; BOLONHEZI, D.; QUEIROZ, S. C. do N. de; FERRACINI, V. L.; SMITH JR, S..
2005
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Aquífero Guarani; Herbicida; Tillage.
Ano: 2005 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1021402
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Presence of Atrazine in Water in a Recharge Area of Guarany Aquifer in Brazil Repositório Alice
CERDEIRA, A. L.; SANTOS, N. A. G.; PESSOA, M. C. P. Y.; SMITH JR, S.; LANCHOTE, V. L..
The region of Ribeirao Preto City located in Sao Paulo State, southeastern Brazil, is an important sugarcane, soybean and corn producing area. This region is also an important recharge area for groundwater of the Guarany aquifer, a water supply source of the city and region. The cultivation of grain and sugar cane in thes area demands the frequent use of the herbicide atrazine (2-chloro-4- (ethylamino)-6-(isopropylamino)-S-triazine). This research was conducted to characterize the potential contamination of groundwater with atrazine. Surface water samples were collected in the Espraiado stream in a selected watershed on the area, during the years of 1995-1998. Groundwater was also collected in wells located at the edge of the watershed during the years of...
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: Atrazine; Water; Guarany Aquifer; Brazil.
Ano: 2004 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1077901
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Soil tillage systems and herbicide leaching in Brazil. Repositório Alice
CERDEIRA, A. L.; SOUZA, M. D. de; BOLONHEZI, D.; QUEIROZ, S. C. do N. de; FERRACINI, V. L.; LIGO, M. A. V.; PESSOA, M. C. P. Y.; SMITH JR, S..
The Guarany aquifer located in South America has a dimension of approximately 1,200,000 Km2 and spreads to areas of eight Brazilian states plus parts of Argentina, Uruguay and Paraguay. The region of Ribeirao Preto City, located in Southeast of Brazil, Sao Paulo State, is a sugarcane, soybean, peanuts, and corn producing area. This region is also an important recharge area to the aquifer. Intensive farming on the area has demanded constant use of herbicides and fertilizers. Triazine herbicides such as atrazine, ametryn, and simazine are used on the area and are known to have potential for groundwater contamination. Currently most of the sugar cane crop is mechanically harvested without burning. This practice allows the straw to decompose in soil, maintain...
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: Águas subterrâneas; Hidrologia; Groundwater; Hydrology; Soil transport processes; Nonpoint source pollution.
Ano: 2005 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1020673
Registros recuperados: 3
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