Frito-Lay Incorporated announced today that production would be adjusted at its Jonesboro plant, bringing in work from a plant closing in Kentucky but also shutting down two older lines. Plano-based company spokesman Charles Nicolas says about ten jobs will be added at Jonesboro over the next couple of months. The closing of the 41-year-old plant at Louisville, Kentucky, will put 326 people out of work. Production will shift to newer plants in a strategy by PepsiCo Incorporated, its parent firm, to streamline snack food and beverage operations. The Jonesboro Regional Chamber of Commerce office lists the Frito-Lay plant as employing 644 people, making it the region`s sixth-largest employer. The plant opened in 1997 at a 140-acre site in an industrial park at the city`s eastern edge. The 400,000-square-foot plant makes corn chips and potato chips. Four other plants will also take on production from Kentucky.