By Marvin G. Perez Bloomberg February 15, 2013 Coffee farms in Central America may lose 25 percent of exportable production next year because of a crop disease known as leaf rust, providing a “little bit” of a boost to slumping prices, an industry group said. In the 12 months starting Oct. 1, about 3.45 million bags of exportable coffee will be lost from the 13.8 million expected in Honduras, Guatemala, Nicaragua, El Salvador and Costa Rica, said Jose Angel Buitrago, the president of the Central American Organization of Coffee Exporters, or Orceca, citing figures compiled from the region’s main grower groups. “Irregular, heavy rains in August, followed by an extended period of sunshine and high winds, created the perfect humid conditions for the disease to spread at unprecedented rates,” Buitrago said yesterday in a telephone interview from Managua, Nicaragua. The situation was exacerbated when this year’s harvest began in October, because coffee pickers carry the spores f...