Also on the 20th June 1948, Ludwig Erhard, director of economics of Bizonia, announced the abolition of price controls and relaxation of rationing. He believed that if prices found their own levels, producers would have more incentive to produce and farmers would send their food to markets, so food would return to markets. This worked. So, even though prices rose, Germans could buy good with their new Deutschmarks. The black market also disappeared.