University of Illinois Urbana-Champaign, Department of Agricultural and Consumer Economics, 326 Mumford Hall, MC-710, 1301 West Gregory Drive, Urbana, IL 61801-3605, USAMarcos GarciasUniversidade Federal de Lavras, Trevo Rotatório Professor Edmir Sá Santos, s/n Caixa Postal 3037 - CEP, Lavras,...