(Bloomberg) - World wine production is forecast to fall 6.1 percent in 2012 with output down in France, Argentina, Hungary and New Zealand, the International Organisation of Vine and Wine said. Output may fall to about 248.2 million hectoliters from 264.2 million hectoliters in 2011, according to documents handed out at a press conference in Paris today. Wine production in France, the biggest supplier, may slump 20 percent this year to the lowest in at least four decades after winter drought, cold and wet weather, hailstorms, a heat wave, and summer dryness damaged vineyards, according to the country’s Agriculture Ministry.