Post harvest discoloration of chips from early summer potatoes

Three plots (a high fertility, a low fertility, and a low fertility plus 120 lb of nitrogen) were planted using the variety Cobbler. These plots were located in the Gilcrest, Colorado summer potato producing area. Potatoes were harvested July 7, 11, 18, 25, August 1 and 8, a sample was chipped, and other tubers were placed into 50, 70, and 90 F storage. An injury treatment was included with the July 25 harvest. At three-day intervals over a period of 21 days, respiration, chip color and reducing sugars were determined.