Greenhouse gas emissions under conservation agriculture compared to traditional cultivation of maize in the central highlands of Mexico

► Conservation agriculture (CA) and conventional agriculture (CT) systems ► Greenhouse gasses emitted were similar from CA and CT. ► C content in the 0-60 cm layer was much higher in CA than in CT. ► The net global warming potential of CA was negative, but positive in CT. ► C sequestered in soil is far more important than GHG emitted.