Genetically modified corn adoption in Brazil, costs and production strategy: results from a four-year field survey - Alves, Lucilio Rogerio Aparecido; Ferreira Filho, Joaquim Bento de Souza; Silveira, Jose Maria Ferreira Jardim da; Costa, Matheus Sleiman da; Osaki, Mauro; Lima, Fábio Francisco de; Ribeiro, Renato Garcia (Revista de Economia e Agronegócio, 2020)