Leaching and half-life of the herbicide tebuthiuron on a rcharge area of Guarany aquifer in sugarcane fields in Brazil - Cerdeira, Antonio Luiz; Souza, M. D. de; Queiroz, Sonia C. N.; Ferracini, Vera Lúcia; Bolonhezi, Denizart; Gomes, Marco A. F.; Rosa, Maria A.; Balderrama, Otávio; Rampazzo, Paulo; Queiroz, Regina Helena Costa; Neto, Carlos F.; Matallo, Marcus B. (Journal of Environmental Science and Health Part B, 2007)