“…For example, Bt cotton, yield increase is reported as follows; 0% in Australia [31], 7-15% in China [49], 9-11% in USA [11], 20% in Mexico [113], 32-34% in Argentina [95], 40-70% in South Africa [53,80] and 43-87% in India [98]. The United States, South Africa and Spain represent 5-8% [111], 11% [37] and 4.7% [36], respectively, for yield increase in Bt maize. In USA, Argentina and Romania, the yield increase for Bt soybean represent À2% to 2% [7,11], 0% [97] and 31% [9], respectively.…”