Concord yields varied widely last year, ranging from no crop to 20 tons per acre. Suphasuk Pradubsuk Washington State’s juice and wine grape crop will likely be the smallest since 2005 for wine grapes and 2004 for juice grapes, reports agricultural economist Trent Ball. Grapes got a double hit this past season—cold ­temperatures during Thanksgiving 2010, that damaged vines and reduced yields, followed by an unseasonably cool summer that made ripening ­difficult in some locations. Ball, who heads Yakima Valley Community College’s vineyard and winery technology program, gave a snapshot view and forecast of the state’s grape economy during the […]