Do GM crops really have higher yields?
GM crops allow farmers to protect and preserve yields from damage from pest and weed pressure. A study by the Joint Research Centre showed that GM maize increased farm income by up to € 122 per hectare, led to higher average yields of 11.8% in an area of heavy insect pressure, and resulted in a reduction in insecticide costs by as much as € 20.04 per hectare. After nine years of commercial cultivation of Bt maize in Europe, there were important yield and net economic benefits at the farm level. In all European countries growing Bt maize, yield gains were reported, ranging from 5-15% up to 25% in heavily infested regions.