Data/hora: 23/09/2024 01:38:52

Biblioteca(s): 	Embrapa Meio Ambiente.	
Data corrente: 	22/05/2007	
Data da última atualização: 	28/09/2015	
Autoria: 	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 JUNIOR. S.	
Afiliação: 	ANTONIO LUIZ CERDEIRA, CNPMA; MANOEL DORNELAS DE SOUZA, CNPMA; D. Bolonhezi, Agronomic Institute of Campinas, APTA-Centro Leste; SONIA CLAUDIA DO N DE QUEIROZ, CNPMA; VERA LUCIA FERRACINI, CNPMA; MARCOS ANTONIO VIEIRA LIGO, CNPMA; MARIA CONCEICAO PERES YOUNG PESSOA, CNPMA; S. Smith Jr, USDA-ARS-National Sedimentation Laboratory, Oxford, MS.	
Título: 	Effects of sugar cane mechanical harvesting followed by no-tillage crop systems on leaching of triazine herbicides in Brazil.	
Ano de publicação: 	2005	
Fonte/Imprenta: 	Bulletin of Environmental Contamination and Toxicology, New York, v. 75, n. 4, p. 805-812, 2005.	
Idioma: 	Inglês	
Conteúdo: 	The state of São Paulo, located in southeast Brazil, is an important sugarcane, soybean and corn producing area with high use of chemicals in agriculture and potential risk of environmental contamination (Pessoa et al. 1998). This region is also an important recharge area for groundwater of the Guarany Aquifer, which spreads to areas of eight Brazilian states plus parts of Argentina, Uruguay and Paraguay. Also, in Brazil, currently most of the sugar cane crop is burned to facilitate harvesting and this could interfere with soil properties. In São Paulo State, where the agriculture is well developed, there is a new trend toward sugar cane mechanical harvesting, without burning. This practice allows the straw to decompose in soil, maintain a better soil structure, and can interfere with the movement and leaching of solutes. It is also normal to grow other crops following sugarcane in No-tillage (NT) and conventional tillage (CT), that could further affect the movement of herbicides in the environment (Smith et al. 2001). Several studies have demonstrated the possibility of pesticides leaching to groundwater (Smith et al. 2001; Bouwer 1990). Among them, triazine herbicides such as Atrrazine,(2-chloro-4-ethylamino-6-isopropylamino-l,3,5-triazine) ametryn, (2-(ethylamino)-4-isopropylamino-6-methyl-thio-s-triazine), and simazine[2-chloro-4,6-bis(ethylamino)-l,3,5-triazíne] are used in Brazil and can contamínate groundwater (Pessoa et al. 1998). The Brazilian Health Ministry has set the maximum amount of atrazine and simazine in drinking water at 2 ug/L (Pessoa et al. 1998).	
Thesagro: 	Agrotóxico; Águas subterrâneas; Cana de açúcar; Efeito residual; Herbicida; Lixiviação; Poluição da água; Qualidade da água.	
Categoria do assunto: 	P Recursos Naturais, Ciências Ambientais e da Terra	
Registro original: 	Embrapa Meio Ambiente (CNPMA)	
Exemplares: 	CNPMA - (6855-1) - UPC - AP - DD -  -  - 2005AP_012 - DIS