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M A R C H 2 0 1 624 POTATO GROWER 2016 NPPGA Annual Research And Reporting Conference by Willem Schrage North Dakota State Seed Department The Northern Plains Potato Growers Association Research Reporting Conference was held February 16 in the Alerus Center in Grand Forks North Dakota. It is the opportunity for research scientists to provide details of their recent research that was facilitated by funds of the potato growers. It proved to be of much interest as it was a well-attended conference. The first sub- ject was from the USDAARS facility in East Grand Forks Minnesota. Storage and Processing Evaluation of Advanced Potato Breeding Clones Dr. Darrin Haagenson USDA-ARS emphasized the cooperation with uni- versity breeders researchers producers and processors in evaluating storage and processing characteristics. Dr. Haagenson has recently become the director of the USDA-ARS Potato Research Worksite. He mentioned dif- ferent activities of the facilty such as 1 Sample Analysis of 3000 french fry samples and 2000 chip samples which were tested for storability processing quality cold sweetening and nutritional quality such as vitamin C. 2 The Storage and Processing Evaluation on specific gravity of advanced breeding clones of 80 clones. 3 The Cold Storage Processing Classifi- cation in three classes where Class A chips directly from 42F after 7 months of storage Class B chip directly from 45F after 7 months of storage Class C only chip from 48F after 7 months of storage. 4 The National Fry Processing Trial NFPT assisting the US Potato Board with identification of potato lines with low reducing sugaracrylamide potential in storage. 5 The Snack Food Association Chip Trials of 12 varieties sponsored by US Potato Board. 6 Proposed research on Glycoalkaloids to create leaf tissue profiles of 200 devel- opmental lines from USDA Research Geneticist. Survey Among several questions fifty nine per- cent of the audience indicated that they thought that neonicotinoid insecticides may have failed. Forty four percent of seed potato growers sprayed oil weekly to control PVY and fifty eight percent had thought about using drones. Identification of specific starch pro- files in NDSU potato germplasm Ms. Leah Krabbenhoft NDSU started with indicating that potato starch is used for food products and animal feed. It also has industrial applications as bio- plastics such as tableware shopping bags pharmaceutical coatings paper starches building additives green adhe- sives and textile auxiliaries. Potato starch contains around 75 amy- lopectin that is soluble and rapidly digested. This means a high glycemic index eliciting high insulin demand. It also contains around 25 amylose which is resistant that is slowly digest- ed. Potatoes have a relatively high glycemic index that is associated with an increased risk of diabetes and cardio- vascular disease. It explains the need to produce and examine improved culti- vars of potato that have increased health benefits. Ms. Krabbenhoft found in her research that in rapidly evaluating test samples Ziploc Zipn Steam bags can be used as a more efficient method of cooking. She also observed that cooking methods did not influence the levels of starch. In her evaluation of clones for starch attributes she discovered that there was the trial location influenced whether there was a significant difference in starch attributes. Understanding Phosphorous Acid on Injury to Potato. Dr. Andy Robinson NDSUUMN said Phosphorous acid applied to protect crop from pink rot and late blight tuber rot is shown to be highly effective. Data indicate that there also is some silver scurf control in storage. A problem is that applying phosphorous acid on the foliage results in leaf burning especially if the crop is under moisture fertility or disease stress. They were looking at adjuvants to reduce the burning. They also looked at effects of applications directly on tubers going into storage. Their conclusions were that there is less injury at after earlier application using higher water volumes and lower rates 5- 7 pta. Silicone surfactants may help if you dont apply foliar fungicide for 2-3 days after using silicone surfactant. The application from the air or without chemigation resulted in more phospho- rous acid in tubers than chemigation alone. Some research suggests that 100 ppm of phosphorous acid is needed for Phythophtora spp. control. More than three applications of phosphorous acid