Ag. Engineer with Ms in Ag. Engineering from the State University of Campinas (1991) and PhD in Ag. Engineering from University of Nebraska-Lincoln (1996). Received the Brazilian Young Scientist Award in 1996 and currently works as Associate Professor at the University of Sao. Has experience in the area of Agricultural Engineering, with emphasis in agricultural machines and implements, precision agriculture, spatial variability, sensors, yield maps, GNSS and variable rate applications.