Ed Morse, Citigroup Inc.’s global head of commodities research, said the worst slump in commodities prices in a generation isn’t over. “I think we are not at the bottom because we are still seeing consistent cost deflation,” Morse said Saturday at a meeting of the Institute of International Finance in Lima, Peru. The Bloomberg Commodity Index on Sept. 30 capped its worst quarterly loss since the depths of the recession in 2008. The economy in China, the biggest consumer of grains, energy and metals, is expanding at the slowest pace in two decades just as producers struggle to ease surpluses. Alcoa Inc., once a symbol ... (full story)