“…The literature presents a wide variation in the values of EE for soybean crops cultivated in Brazil. For example, several EE values have been reported for soybean crops: 5.47 (Melo et al, 2007); 18,64 (A. T. Campos, Klosowsk, Souza, Zanini, & Prestes, 2009); 7.81 (Assenheimer, Campos, & Gonçalves, 2009); 4.27 (Mourad & Walter, 2011); 9.80 (Santos, Spera, Fontaneli, & Dreon, 2011); 5.30 (Riquetti, 2014); and 13.66 (Ferreira, Neumann, & Hoffmann, 2014). In most of these studies, energy was primarily attributed to fuels (A. T. Campos et al, 2009;Ferreira et al, 2014), fertilizers (Mourad & Walter, 2011;Riquetti, 2014), herbicides (Assenheimer et al, 2009;Riquetti, 2014) and agricultural machinery (Melo et al, 2007;.…”