A study was conducted to determine if subjecting potato plants (Solanum tuberosum L. cv. Russet Burbank) to cool growing temperatures during and shortly after tuber formation would induce the development of brown center or hollow heart. Plants were moved at weekly intervals following tuber initiation from warm growing conditions into a 3-week cool environment (10° nights/18°C days). Plants were then returned to warm conditions (18° nights/23° days) for a period of several weeks and harvested. Those plants given the 3-week cool treatment or grown continuously in the cool after tuber initiation showed a significantly higher incidence of brown center.