President Pranab Mukherjee has said that global food production has to be increased on a war footing mode as one billion people are still living in poverty, mostly in Asia and Africa. Inaugurating the Asia-Africa Agri Business Forum, organised by industry body FICCI, the President said, to keep pace with growing demand, the global food output has to increase by 40 per cent by 2030 from the current level. Stating that agriculture makes much more than robust business sense in these two continents in eradicating poverty, Mr Mukherjee said that studies have projected that agriculture and agri-business to be a three trillion dollar business in Africa and almost 4.5 trillion dollar business in Asia by 2030. Expressing concern on slow development of agri-business in these continents, he said that the sector is plagued by serious constraints in production, demand and supply, export potential and processing capabilities.