For the minimum scenario, the FAO experts took a sequestration rate of 200 kg of carbon/ha per year for arable and permanent crops and 100 kg of carbon/ha per year for pastures. The optimum scenario combines organic farming with reduced tillage on arable land (with a sequestration rate of 500 kg of carbon/ha per year). It stated strongly that “the way the world grows its food will have to change radically to better serve the poor and hungry if the world is to cope with growing population and climate change while avoiding social breakdown and environmental collapse.”