J U L Y / A U G U S T 2 0 1 9 POTATO GROWER 21 (Granubor), and (3) compare the effec- tiveness of a single pre-planting appli- cation of K to split pre-planting and emergence applications for both Aspire and 0-0-60 (without B). Cultivar Response to Nitrogen and Effects on Storage Quality Nitrogen plays a significant role in growth and yield potential of potato. It can also affect storage and processing quality by altering tuber chemical mat- uration. The objective of this study is to determine how N rate affects storage quality of new processing cultivars. The cultivars Lamoka, Clearwater, Umatilla, MN13142, and Russet Burbank are being tested at three N rates – 120, 240, and 360 lbs N/A. Tubers will be analyzed for sugars (sucrose and glucose), soluble protein content and other biochemical proper- ties at harvest following a 2-week reconditioning period and after three and six months storage at 40o and 48o F. USDA-ARS, East Grand Forks, Minnesota Dr. Darrin Haagenson In 2019, the USDA-ARS lab in East Grand Forks is conducting pressure bruise storage evaluations and is inter- ested in collecting samples during this year’s harvest. We are interested in collecting samples (50#) across all three market types (Fresh, Chip, and Frozen), and please contact Darrin for more information: Darrin.Haagenson @ars.usda.gov. At Hoverson Farm’s research pivot near Larimore, North Dakota, 44 chip and 39 russet processing clones represent- ing advanced clones from nine public US breeding programs are being evalu- ated. In this trial, fry or chip color and sugar profiles will be measured throughout eight months of storage at contrasting storage temperature (48, 45, 42, and 40°F). At Hoople, North Dakota, we are participating in a Potatoes USA sponsored SNAC chip field trial where we are measuring mar- ketable yield among eight new chip clones. After harvest, storage sugar profiles and color will be assessed throughout 8 months of storage at 45 and 48°F. University of Minnesota - Northwest Research and Outreach Center, Entomo- logist Dr. Ian MacRae, UMN The Potato Entomology Lab at UMN’s- Northwest Research & Outreach