2014 Klamath Basin Potato Variety Development Summary Brian A. Charlton Asst. Professor Prepared December 2014 by: Nichole A. Baley Faculty Research Asst. Oregon State University Klamath Basin Res. & Ext. Center
Table of Contents Introduction 3 Acknowledgements 4 Contributors 5 2014 Weather 6 7 2014 Insect Trapping Results 8 10 Guide to Clone Designations 11 Single hill Screening Results 12 13 Fresh Market Value Methods 14 Replicated Trial Cultural Information 15 Russet Potato Variety Development Trials Preliminary Yield Trial (PYT 2) 16 Statewide Trial 17 24 Tri State Trial 25 31 Red/Specialty Potato Variety Development Trials Preliminary Yield Trial (PYT 2) 32 Statewide Trial 33 37 Tri State 38 41 Chip Potato Variety Development Trial Preliminary Yield Trial (PYT 2) 42 Statewide Trial..43 46 Regional Trial...47 50 Chip Processing Results...51 2
Introduction Since its inception in 1985, the Tri State variety development program has primarily focused on the development of processing and dual purpose (process and fresh) russets. Recent breeding efforts have focused more on improving genetic resistance to various pests and diseases as a means of lowering production costs. During the past decade, Oregon has been the lead state in the release of eleven russet varieties. Although the development of russet varieties remains the primary focus, recent efforts have included red skinned and specialty type selections. Many of these selections offer unique skin and/or flesh color combinations along with enhanced nutritional qualities including elevated antioxidant and Vitamin C content. In total, more than 25 new varieties have been released by the Tri State variety development program since 1985. More recently Klamath Basin growers have identified the need for chipping potatoes suitable for export markets. Trials were initiated in 2008 and 2009, with funding from the Oregon Potato Commission, to identify acceptable chipping varieties using advanced selections and recently released varieties from the Tri State, Southwest, North central, and Eastern breeding programs. Screening for resistance to various species of nematodes and related diseases is being accomplished at several locations. The Klamath Basin Research and Extension Center (KBREC) routinely screens selections for resistance to root knot nematode (Meloidogyne chitwoodi and Meloidogyne hapla) and corky ringspot disease (CRS) resulting from infection of Tobacco rattle virus which is vectored by stubby root (Paratrichodorus spp.) nematodes. Other cooperating sites within the Tri State area also work on resistant screening and other production limitations most suited to their respective location. The overall objective is that future releases will offer genetic resistance to many economically important pests and diseases which will help reduce production inputs as these costs continue to rise. The Klamath Basin Research and Extension Center (KBREC) also serves as an initial field screening location for first generation selections of russet, specialty, and chipping clones (single hills). Secondyear evaluations of four hill red/specialty and chip selections also take place in Klamath; however, russet selections are currently sent to the Central Oregon Agricultural Research Center (COARC). Breeding progeny are supplied by programs at the USDA Agricultural Research Service (ARS) facility in Prosser, Washington, and Aberdeen, Idaho, as well as, Oregon State University (OSU), Colorado State University, and North Dakota State University. The purpose of this summary booklet is to report the results of our variety trial efforts. In 2009, KBREC participated in the following research trials: Russet Preliminary Yield 2 (PYT 2), Statewide Russet, Tristate Russet, Western Regional Russet, Red/Specialty PYT 1, Statewide Specialty, Tri state Specialty, Western Regional Red/Specialty, and a modified Western Regional Chip Trial. A brief summary of weather during the growing season, insect trapping results, single hill selections, and specialty 4 hill selections are also included in this research summary. 3
Acknowledgements The ultimate goal of variety development at OSU KBREC and cooperating Tri state partners is the development and commercialization of new potato varieties to benefit the Northwest potato industry. The effect of the Tri state Potato Variety Development Program on the Northwest potato industry has been substantial. The fresh market industry, French fry processors and chippers have incorporated many varieties developed through this program into their businesses. Ranger Russet, Western Russet, Umatilla Russet, and Alturas are examples of russet cultivars released from the Tri State program that have greatly benefited the Northwest potato industry, being the 3 rd, 5 th, 7 th, and 8 th most widely grown cultivars in Oregon and accounted for 27% of total acreage. As expected, recently released russet varieties have found greater adoption by Northwest processors compared to fresh market usage in the Klamath Basin. However, several varieties have found fresh market niches in the Klamath Basin including GemStar Russet, Premier Russet, and most recently Classic Russet. Varieties recently released by the Tri State program are now produced on over 140,000 acres in the Pacific Northwest with value to growers estimated at approximately $390 million. A recent economic analysis of the Tri state breeding effort revealed that every dollar invested in the program results in a $39 return (Araji and Love, 2002). The current focus of Tri state variety development efforts is to develop improved varieties that increase quality and production efficiency while decreasing fertilizer and pesticide inputs. The success of OSU KBREC potato variety development is made possible with funding from USDA CREES, USDA ARS, and the generous support of the Oregon Potato Commission. In addition, the Klamath Potato Growers Association annually contributes to OSU KBREC research and Extension activities. References Araji, A.A. and S. Love. 2002. The economic impact of investment in the Pacific Northwest potato variety development program. Amer. J. Potato Res. 79:411 420. Special Acknowledgment OSU KBREC plagiarized the design and layout for this publication from the WSU Potato Cultivar Yield and Postharvest Quality Evaluation publication. This is an excellent publication which provides a vast amount of data in a grower friendly venue. The publication below, by the Washington State University Potato Research Group, can be found at the listed website. Mark Pavek, Rick Knowles, Zach Holden, Nora Fuller. 2009. Washington State University Potato Research Group, Pullman, WA. 2009 Potato Cultivar Yield and Postharvest Quality Evaluations. http://www.potatoes.wsu.edu 4
Contributors Oregon Cooperators: Solomon Yilma, Corvallis, OR Vidyasagar Sathuvalli, Hermiston Agricultural Research & Extension Center, Hermiston, OR Clint Shock, Erik Feibert, Malheur Experiment Station, Ontario, OR Tri state Cooperators: Mark Pavek, Rick Knowles, Zach Holden, Nora Fuller, Washington State University, Pullman, WA Chuck Brown, USDA/ARS, Prosser, WA Jeff Stark, Peggy Bain, University of Idaho, Aberdeen, ID Mike Thornton, University of Idaho, Parma, ID Rich Novy, Jonathan Whitworth, Brian Schneider, USDA/ARS, Aberdeen, ID Regional Cooperators: David Holm, Farhettin Goktepe, Colorado State University, San Luis Valley, CO Creighton Miller, Douglas Schuering, Jeff Koym, Texas A&M University, Springlake, TX Rob Wilson, Darrin Culp, University of California, Tulelake, CA Industry Cooperators: Rebecca Jones, Allan French, J.R. Simplot Co. Baley Trotman Farms, Malin, OR Wong Potatoes, Klamath Falls, OR Ed Stastny, Malin, OR Roy Wright, Tulelake, CA Basin Fertilizer & Chemical, Merrill, OR Macy Flying Service, Newell, CA Commissions and Associations Bill Brewer, Jennifer Fletcher, Judy Schwartz, Oregon Potato Commission, Portland, OR Klamath Potato Growers Association, Klamath Falls, OR 5
Weather Data Yearly Average Minimum and Maximum Air Temperature Average Minimum Average Maximum 90.00 80.00 70.00 Temperature (F) 60.00 50.00 40.00 30.00 20.00 10.00 0.00 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 6
Accumulated Water Year Precipitation 2013 Precipitation 2014 Precipitation Accumulated Water Year Precipitation (in) 25 20 15 10 5 0 7
360 Total P Day Accumulation P Days 350 340 330 320 310 300 290 280 270 2014 2000 2013 Average 260 May 15 June 1 June 15 2014 Insect Trapping Results Potato tuberworm was first detected in the Klamath Basin in late August of 2005. KBREC initiated an extensive trapping program the following year (2006) and have continued this effort annually. In 2009, we expanded our trapping efforts to include aphids, leafhoppers, and psyllids. Fifteen Delta traps (tuber moth), twelve yellow water pan traps (aphids), and fifteen sticky cards (leafhoppers and psyllids) were placed in growers fields shortly after crop emergence. Traps were checked weekly during the growing season and results were tabulated and made available to growers, crop consultants, and other industry personnel electronically in newsletter titled Potato Bytes. This newsletter was also published on the KBREC website at http://oregonstate.edu/dept/kbrec/. Collected data provided Basin producers with pertinent information to improve pest management strategies. Potato tuberworm has not been found despite an extensive eight year trapping program. The following graphs show population dynamic trends for aphids and leafhoppers throughout the growing season. 8
Average potato and green peach aphids per trap per day 20 18 16 14 12 10 8 6 4 2 0 Population Dynamics of Potato Aphid, Green Peach Aphid and Other Aphids in Klamath County, OR 2014 25 20 15 10 5 0 Average other aphid per trap per day Potato Aphids Green Peach Aphids Other Aphids 0.25 Population Dynamics of Beet Leafhoppers in Klamath County, OR 2014 Average BLH per trap per day 0.2 0.15 0.1 0.05 0 9
Average OLH per day per trap 6 5 4 3 2 1 0 Population Dynamics of Other Leafhoppers in Klamath County, OR 2014 10
Guide to Clone Designation Example: AC99375 1RU AC99375 1RU Breeding Program (Aberdeen, ID) AC99375 1RU Selection Site (Colorado) AC99375 1RU Year of Cross (1999) AC99375 1RU Cross Number (375) AC99375 1RU Tuber Selection (1) AC99375 1RU Russet (Ru) Location Codes Designation Breeding Program Selection Program Other A Aberdeen, Idaho Aberdeen, Idaho AO Aberdeen, Idaho Oregon AOA Aberdeen, Idaho Oregon Aberdeen, Idaho ATX Aberdeen, Idaho Texas BTX Beltsville, Maryland Texas CO Colorado MWTX Madison, Wisconsin Texas NDA North Dakota Aberdeen, Idaho NY New York PA Prosser, Washington Aberdeen, Idaho POR Prosser, Washington Oregon TC Texas Colorado TE Tetonia, Idaho TXA Texas Aberdeen, Idaho TXNS Texas Norkotah Strain B LS P/P R R/R R/Y Ru W/Y LB PW/Y P/Y P/PW Miscellaneous Designations Chuck Brown s Cross Low Sugar Purple skin/purple flesh Red skin Red skin/red flesh Red skin/yellow flesh Russet White skin/yellow flesh Late Blight resistance Purple skin with White eyes/ Yellow flesh Purple skin/yellow flesh Purple skin/purple and White flesh 11
Single Hill Results Approximately, fifty five thousand (55,000) greenhouse produced seedling tubers were planted at a remote site in the Yonna Valley area on May 19, 2014. Located about 25 miles east of Klamath Falls, soils are very sandy with approximately 1.0 percent organic matter and a ph of 7.0. The location provides good isolation from other potato production areas and intensively fumigated soils allows us to harvest very clean material for seed increase. Progeny included 55 families from Oregon State University; 42 from USDA, Prosser, WA; 219 from USDA, Aberdeen, Idaho; 7 from Colorado State University. Several crosses included russet parents with virus, late blight and potato tuber worm resistance. Tuber families were lifted with a two row, level bed digger on October 9. A selection team including researchers, extension agents, growers and industry personnel selected desirable clones from various families immediately after lifting. As expected, selection was based primarily on external appearance; however, internal evaluation was performed on a limited number of selections. All retained material was transported to Klamath Falls, Oregon for storage at the Klamath Basin Research and Extension Center (KBREC). The following table outlines the number of single hills provided by each breeding program and selection rate. Location General Cross Types Number of Progeny Planted Number of Progeny Selected % Selection Rate ARS Prosser, WA Disease resistance, pigmented 8,395 85 1.01 Oregon State University Disease resistance, mixed type 11,151 199 1.78 Colorado State University Disease resistance, russet 2,081 23 1.10 ARS Aberdeen, ID Disease resistance, russet 34,185 706 1.02 Total 55,812 1,013 1.81 12
Preliminary Yield (PYT 1) Russet Screening Four hundred eighty five (485) selections from 2013 single hills were planted in 16 hill seed increase plots at remote site in the Yonna Valley area. Potato tubers were lifted using a two row, level bed digger on October 8, 2014. A team of about 20 research and industry personnel selected 87 clones for further evaluation based on market potential and possible disease resistance. Tubers from these selections were retained and stored at KBREC for seed increase. This material will be evaluated in a Preliminary Yield Trial (PYT 2 Russet) conducted at KBREC and other locations throughout the Pacific Northwest in 2015. Preliminary Yield (PYT 1) Specialty Screening Thirty seven (37) selections from 2013 single hills were planted in 16 hill seed increase plots at a remote site in the Yonna Valley area. Potato tubers were lifted using a two row, level bed digger on October 8, 2014. A team of about 20 research and industry personnel selected 9 clones for further evaluation based on market potential and possible disease resistance. Tubers from these selections were retained and stored at KBREC for seed increase. This material will be evaluated in a Preliminary Yield Trial (PYT 2 Specialty) conducted at KBREC and other locations throughout the Pacific Northwest in 2015. Preliminary Yield (PYT 1) Chip Screening Eighty seven (87) chip selections from 2013 single hills were planted in 16 hill seed increase plots at a remote site in the Yonna Valley area. Potato tubers were lifted using a two row, level bed digger on October 8, 2014. Research and industry personnel selected 14 clones for further evaluation based on chipping potential and possible cold sweetening resistance. Seed of these selections was hand collected and stored at the KBREC potato facilities. This material will be evaluated in a Preliminary Yield Trial (PYT 2 Chip) conducted at KBREC and other locations throughout the Pacific Northwest in 2015. KBREC will also be increasing seed for future evaluation. 13
Fresh Market Value Methods Graphs showing the difference in gross returns per acre (Fresh Market Value) compared to Russet Norkotah are provided for all entries in both the Tri state and Western Regional Russet Trials. Values were calculated by subtracting the gross return of Russet Norkotah from the gross return of each particular entry. Net packing shed returns to growers were calculated using a five year average of fresh potato prices in the Klamath Basin and a packing shed cost of $6.10/cwt. Consultations with several growers and shippers confirmed that these assumptions were valid comparisons to actual prices observed in the Klamath Basin. Assessing the fresh value of a given entry is difficult as packing sheds utilize various tuber sizes to meet current market orders. For example, all tubers that meet 90 or 100 count carton specifications are sometimes used to fill 5 and 10 lb. bale orders. As expected, these types of scenarios are not accounted for in our assumptions. In addition, this type of economic analysis does not account for consumer preference. As such, entries which appear to lack fresh market appeal are highlighted as white bars. The table below lists point prices per tuber size and grade with associated pack fees for grade and size categories used. Five Year KBREC Grade Size Markets/Packaging 1 Klamath Basin Avg. $/cwt Packaging and Handling 4 6 oz. 10.0 lb. poly bags $11.26 $6.10 5.0 lb. poly bags $13.26 $6.10 6 10 oz. 70, 80, 90 and 100 count $19.22 $6.10 10 20 oz. 40, 50, 60 and 70 count $21.87 $6.10 <4 oz. and culls Washed Processed Grade $4.06 $6.10 No. 2 10 20 oz (50 lb. sacks) $11.19 $6.10 1 Count = tuber number per 50 lb. carton. 6 10 oz (50 lb. sacks) $9.08 $6.10 14
2014 Replicated Trial Cultural Information Location: Klamath Falls, OR Soil Type: Poe fine sandy loam, ph 6.8 Planting Date: 5/14 5/15 Vine Kill Date: Harvest Date: Irrigation: Plot Length: In row spacing: Row spacing: Number of Reps: August 25 th : Rolled and chopped vines and Reglone application October 2 nd Solid set sprinkler + natural precipitation = 22.5 inches 25 hills (19.27 ft.) 9.25 inches 36 inches 4 reps for Statewide Trials and 2 reps for PYT Trials Fertilizer: 180 80 200 215 Weed Control: Prowl, Matrix Insecticides: Fungicides: Nematode Control: Admire Ridomil/Bravo, Vertisan, Revus Vydate C LV + Fall 2012 application of Telone and Vapam General Comments: The three week period from 7/1 thru 7/21 averaged 91 degrees F for daily high temperature which was 8 degrees higher than the 25 yr average daily high for that time period. Excessive heat stressed most clones which resulted in pointy stem ends. Despite the sustained heat, total yields were slightly above average with the exception of Russet Norkotah which was 50 to 75 cwt lower than typical. Stem end browning and vascular discoloration issues were higher than normal but likely due to moisture stressed plants at time of vine kill. Full irrigation deliveries for A water users occurred despite early fears of curtailments. 15
2014 Preliminary Yield (PYT 2) Russet Trial Location: OSU KBREC Klamath Falls, OR Planting Date: May 15 Vine Kill Date: September 2 Harvest Date: September 23 Days to Vine kill: 111 Fertility: 180 80 200 215 In Row Spacing: 9.25 inch The PYT 2 Russet Trial evaluates recently selected clones, often only three years removed from singlehill selection. Retained entries are further evaluated in replicated trials at several Oregon locations before advancing (if applicable) to the Tri state trial which includes testing locations in Washington and Idaho. This trial included 3 standard varieties and 64 new entries. The Oregon Potato Variety Development Team chose to advance 22 selections to the Statewide Russet Trial in 2015 and discarded the remaining selections due to poor performance. Only retained selections are listed in the following tables. Clone Female Parent Male Parent AOR10007 3 A02060 3TE A05013 5TE AOR10007 10 A02060 3TE A05013 5TE AOR10015 6 A03158 1TE A05035 2 AOR10016 1 A03158 1TE Western Russet AOR10016 5 A03158 1TE Western Russet AOR10062 1 A98345 1 COA05092 1 AOR10089 1 A03131 21 A05013 5TE AOR10097 3 A03131 21 Dakota Trailblazer AOR10214 2 PA07V5 3 Stampede Russet AOR08477 2 PA98NM25 5 AO96365 2 AOR07891 3 A02782 2 A02811 11 AOR07892 3 A02782 2 PA03NM3 4 AOR07892 9 A02782 2 PA03NM3 4 AOR07892 17 A02782 2 PA03NM3 4 AOR07892 21 A02782 2 PA03NM3 4 AOR08540 1 A02782 2 PA01N22 5 AOR10028 1 A05012 2T A02060 3TE AOR08241 1 A97066 42LB ND028673B 2Russ OR10006 2 A06866 2 (STO) OR04057 2 POR12NCK50 1 PA99N82 4 Western POR12NCK59 1 PA99N82 4 PA01N21 4 AOR10007 2 A02060 3TE A05013 5TE 16
2014 Statewide Russet Trial Location: OSU KBREC Klamath Falls, OR Planting Date: May 15 Vine Kill Date: September 2 Harvest Date: September 23 Days to Vine kill: 111 Fertility: 180 80 200 215 In Row Spacing: 9.25 inch The Statewide Russet Trial evaluates selections retained from the PYT 2 Russet Trial at three locations in Oregon. As mentioned earlier, selections retained from this trial are advanced to the Tri state Trial which includes testing locations in Washington and Idaho. Testing locations in Oregon represent diverse climatic conditions (hot, long season and cool, short season) which allow for the retention of selections that exhibit stability over multiple locations. Oregon selections remain in the Statewide Trial until they complete Tri state and Western Regional evaluation or are discarded. Despite a warmer season, potato plots at the KBREC site performed above average. The following is a summary of the Klamath Falls field results. Stand Counts 30 Day Slow emergence: AOR06664 1 (75%), POR11NCV1 1 (62%) 45 Day All entries had greater than 90% final emergence. Plant and Tuber Growth and Development Average Tuber Number Per Plant Most: AOR07926 1 and POR11NCK1 2 (8) Least: AOR08541 1 (5), AOR07919 4 (4) Average Tuber Size (oz.) Largest: AOR07919 4 (8.7), AOR06709 1 (8.3) Smallest: POR11NCV1 1 (4.5), AOR07926 1 (3.8) Undersized Tubers (<4 oz.) cwt/acre Most: AOR07926 1 (118) Least: AOR08075 1 (13), AOR07919 4 (11) Yield and Economic Data Total Yield (cwt/acre) Highest: AOR06576 1 (584), AOR07781 5 (567) Lowest: Russet Norkotah (330), POR11NCV1 1 (337) US No. 1 Yield (cwt/acre) Highest: AOR06576 1 (415), AO06191 1 (412) Lowest: Russet Burbank (192), AOR07940 4 (187) 17
Carton Yield (6 20 oz.) cwt/acre Highest: AOR06576 1 (348), AOR08638 2 (320) Lowest: AOR07926 1 (86), Russet Burbank (121) Gross Return ($/acre) Fresh Market Highest: OR09126 1, AO06070 1KF Fresh Market Lowest: AOR06987 4, AOR06987 6 Tuber Defect Incidence (40 tuber sample of 10 14 oz. tubers) Hollow Heart Notable Defects: AOR07769 3 (37%), AOR08405 3 (30%), POR11NC2 1 (22%) Vascular Discoloration Notable Defects: Ranger Russet (35%), AOR08032 1 (20%), AOR07821 1 (15%) Stem End Browning Notable Defects: OR08OP284 2 and AOR08433 1 (42%), AOR06576 1 and OR09126 1 (40%) 18 Total Yield US # 1s > 4 oz. US # 2s > 4 oz. Culls & <4 oz. Oversized >20 oz. Carton Yield 100 50 count (US 1's 6 20 oz) % of total (cwt/a) yield (cwt/ A) stats** % of total yield* Ranger Russet 540 ABCDEF 60 26 12 1 49 267 Russet Burbank 518 ABCDEFG 37 43 20 0 23 121 Russet Norkotah 330 L 69 13 16 3 51 167 AO06070 1KF*** 517 ABCDEFG 53 27 18 1 42 218 OR08014 4 476 ABCDEFGHI 49 28 19 4 39 183 AO06191 1*** 516 ABCDEFG 80 6 13 1 57 296 AOR07919 4 459 DEFGHIJK 61 27 7 5 54 246 AOR08031 3 519 ABCDEFG 78 10 11 1 61 319 OR09126 1 419 HIJKL 70 18 10 2 56 235 AOR09012 1 482 BCDEFGHI 65 22 11 2 52 251 AOR06576 1*** 584 A 71 10 15 4 60 348 AOR06664 1 544 ABCDE 56 28 14 2 42 229 AOR06706 2 460 DEFGHIJK 64 22 12 2 47 217 AOR06709 1 516 ABCDEFG 53 28 14 5 46 236 AOR07519 5 365 KL 58 18 23 2 43 158 AOR07520 4 449 EFGHIJK 65 13 20 1 52 235 AOR08296 2 449 EFGHIJK 46 32 21 1 35 159 AOR08405 3 510 ABCDEFGH 67 12 20 0 54 274 AOR07821 1 473 BCDEFGHI 56 22 13 9 46 220 AOR08416 2 453 EFGHIJK 63 19 17 2 47 212 AOR08433 1 470 CDEFGHI 44 44 12 1 35 163
AOR08506 3 508 ABCDEFGH 60 26 14 0 44 225 AOR08537 1 552 ABCD 58 24 14 4 48 266 OR09SP39 1 485 BCDEFGHI 46 30 24 1 35 169 OR08OP284 2*** 444 FGHIJK 69 12 18 1 56 249 POR11BDPS1 8 471 CDEFGHI 71 16 12 1 61 285 POR11NC2 1 402 IJKL 66 15 14 5 57 228 POR11NCK1 2*** 563 ABC 55 24 20 1 42 234 POR11NCV1 1 337 L 61 15 24 0 39 133 AOR08032 1*** 415 HIJKL 82 7 11 1 63 262 AOR08075 1 489 ABCDEFGHI 52 37 10 1 45 219 AOR07769 3 460 DEFGHIJK 51 28 21 1 40 183 AOR07781 5*** 568 AB 63 23 10 4 57 324 AOR08638 2 527 ABCDEFG 74 16 9 0 61 320 AOR061026 4 504 ABCDEFGH 69 18 12 1 54 270 AOR07926 1 370 JKL 52 8 40 1 23 86 AOR07940 4 437 GHIJK 43 31 25 1 33 144 AOR08541 1 365 KL 73 11 16 1 61 221 POR11PG61 3 488 DEFGHI 66 12 18 4 49 237 LSD (0.05) 96 US # 1 Yield 6 10 oz Internal Defects (%) >4 oz. %* Specific 10 14 oz. tubers**** 4 6 (cwt/a) STATS** 6 10 oz. >10 oz. Gravity HH IB SEB VD oz. Ranger Russet 324 CDEFGH 18 45 38 1.090 0 8 13 35 Russet Burbank 192 Q 37 47 16 1.088 0 8 20 5 Russet Norkotah 227 KLMNPQ 26 42 32 1.069 0 0 13 0 AO06070 1KF*** 276 EFGHIJKLMNO 21 43 36 1.100 13 8 18 3 OR08014 4 232 HJLMNOP 21 36 44 1.083 20 5 13 0 AO06191 1*** 412 AB 28 50 22 1.079 13 15 18 0 AOR07919 4 279 EFGHIJKLMN 12 34 54 1.073 0 0 10 0 AOR08031 3 407 AB 22 47 31 1.091 0 3 35 10 OR09126 1 293 DEFGHIJKL 20 36 44 1.079 0 8 40 8 AOR09012 1 311 DEFGH 19 42 39 1.091 0 13 23 8 AOR06576 1*** 415 A 16 42 42 1.085 0 13 40 0 AOR06664 1 303 DEFGHIJ 25 37 39 1.104 0 5 28 13 AOR06706 2 295 DEFGHIJ 26 52 21 1.084 0 5 8 10 AOR06709 1 272 FGHIJKLMNO 13 39 48 1.095 3 8 28 10 AOR07519 5 211 MNOP 25 43 31 1.089 13 15 8 0 AOR07520 4 293 DEFGHIJKL 20 45 35 1.091 0 10 15 10 AOR08296 2 205 OPQ 22 44 34 1.092 5 20 5 10 AOR08405 3 342 BCDEF 20 47 33 1.095 30 13 3 0 19
AOR07821 1 265 GHIJKLMNOP 17 36 47 1.099 0 23 15 15 AOR08416 2 283 EFGHIJKLM 25 48 27 1.100 0 13 20 13 AOR08433 1 206 OPQ 21 40 39 1.099 0 3 43 5 AOR08506 3 303 DEFGHIJ 26 51 23 1.091 0 3 28 13 AOR08537 1 320 CDEFGH 17 46 37 1.077 0 3 5 5 OR09SP39 1 222 LMNOPQ 24 42 34 1.072 0 0 18 0 OR08OP284 2*** 309 DEFGH 19 45 36 1.090 0 5 43 15 POR11BDPS1 8 332 CDEFG 14 47 39 1.088 3 10 25 0 POR11NC2 1 265 GHIJKLMNOP 14 28 58 1.083 23 18 13 0 POR11NCK1 2*** 307 DEFGHI 24 38 38 1.080 0 10 18 13 POR11NCV1 1 206 NOPQ 36 45 19 1.088 0 13 0 0 AOR08032 1*** 339 BCDEF 23 44 33 1.092 0 3 23 20 AOR08075 1 254 HIJKLMNOPQ 14 45 41 1.074 3 0 5 10 AOR07769 3 235 IJKLMNOPQ 22 51 26 1.084 38 0 3 0 AOR07781 5*** 358 ABCD 10 40 50 1.084 0 3 25 8 AOR08638 2 391 ABC 18 44 38 1.090 0 3 5 0 AOR061026 4 348 ABCDE 22 46 32 1.105 3 13 23 13 AOR07926 1 193 PQ 55 42 3 1.084 0 10 3 0 AOR07940 4 187 Q 23 41 36 1.075 0 3 23 8 AOR08541 1 266 GHIJKLMNO 17 41 42 1.086 0 10 3 3 POR11PG61 3 322 DEFGH 26 43 30 1.096 10 23 15 0 LSD (0.05) 72 20 Stand % Average Tuber Wt. No. (oz.) tubers/plant Growth Cracks (1 5 best) Rhizoc (1 5none) Skin Color (1 5 dark) Russeting (1 5 hvy) Shape (1 5 long) Shape Uniformity (1 5 best) Ranger Russet 99 6.5 7 4.0 4.5 4.0 4.0 5.0 3.5 3.8 Russet Burbank 100 5.7 8 3.3 4.6 4.3 4.1 4.8 3.4 3.6 Russet Norkotah 98 5.3 5 4.6 4.6 4.9 4.8 4.3 4.1 4.3 AO06070 1KF*** 99 6.4 7 4.5 4.0 4.5 4.4 4.5 3.6 3.9 OR08014 4 93 7.0 6 4.3 3.8 3.8 3.9 4.6 3.5 4.1 AO06191 1*** 98 5.4 8 4.5 4.5 5.0 5.0 4.0 4.3 4.1 AOR07919 4 99 8.8 4 4.3 4.8 4.8 4.8 4.3 3.9 3.9 AOR08031 3 100 6.2 7 4.8 5.0 4.0 4.0 4.4 4.0 4.0 OR09126 1 97 6.7 6 4.9 4.4 4.9 4.6 4.4 4.0 3.8 AOR09012 1 98 6.6 6 4.8 4.3 4.3 4.0 4.0 3.8 3.6 AOR06576 1*** 100 6.8 7 4.5 4.6 4.4 3.8 4.8 4.0 3.9 AOR06664 1 95 6.8 7 4.1 4.0 3.4 3.5 4.0 3.1 13.5 AOR06706 2 99 6.1 6 4.3 5.0 4.0 4.0 4.1 4.1 3.9 AOR06709 1 98 8.4 5 4.1 4.5 4.1 4.1 3.5 3.4 3.5 AOR07519 5 98 5.3 6 4.5 4.4 5.0 5.0 3.6 3.9 3.8 Eye Depth (1 5 shal.)
AOR07520 4 100 5.8 7 4.9 4.8 4.5 4.5 4.1 4.0 3.6 AOR08296 2 98 6.2 6 4.5 4.6 4.0 3.8 3.5 3.4 3.9 AOR08405 3 98 6.1 7 4.8 5.0 3.5 3.6 4.8 4.0 4.1 AOR07821 1 94 7.4 6 4.9 4.4 4.9 4.6 4.3 3.8 4.1 AOR08416 2 99 5.4 7 4.6 4.5 3.6 3.8 4.3 3.8 3.9 AOR08433 1 95 6.8 6 3.9 4.3 4.9 5.0 3.8 3.1 4.3 AOR08506 3 99 5.8 8 4.8 4.9 3.9 3.9 4.3 3.6 3.8 AOR08537 1 100 7.3 6 4.6 4.4 4.1 4.1 4.0 3.6 3.9 OR09SP39 1 100 6.0 7 2.5 4.8 3.4 3.1 4.3 2.8 3.5 OR08OP284 2*** 100 5.5 7 4.8 4.3 4.5 4.4 5.0 4.4 3.9 POR11BDPS1 8 98 7.0 6 5.0 4.4 4.4 4.3 4.3 3.8 3.8 POR11NC2 1 94 7.5 5 4.3 3.9 4.4 4.3 4.4 4.0 3.5 POR11NCK1 2*** 94 6.2 8 3.5 5.0 3.0 3.1 4.8 3.3 4.3 POR11NCV1 1 91 4.6 7 5.0 4.8 4.5 4.8 3.8 4.1 4.3 AOR08032 1*** 100 6.2 6 5.0 5.0 4.1 4.0 4.4 4.1 4.0 AOR08075 1 100 8.1 5 2.0 5.0 4.8 4.6 4.4 13.1 3.9 AOR07769 3 98 5.9 7 4.9 4.8 4.8 4.8 4.0 3.8 4.0 AOR07781 5*** 100 7.9 6 4.9 5.0 4.8 4.6 4.8 4.0 3.9 AOR08638 2 93 6.6 7 4.9 4.9 4.0 3.9 3.5 4.0 4.0 AOR061026 4 98 6.5 7 4.5 4.8 4.4 3.4 4.8 4.1 4.0 AOR07926 1 99 3.8 8 5.0 4.8 4.1 4.1 3.8 4.0 4.1 AOR07940 4 98 5.2 7 4.0 4.8 4.5 4.5 4.9 3.8 4.0 AOR08541 1 99 6.7 5 4.9 4.9 4.9 4.8 5.0 4.3 4.0 POR11PG61 3 96 6.2 7 4.9 4.9 4.8 4.5 4.1 4.0 3.9 *Percent values may not total 100% due to rounding **Entries showing the same letter are not significantly different at the 5% level ***Entries retained for further testing in 2015 ****Internal Defects: HH=hollow heart, Impact Bruise=impact bruise, SEB=stem end browning, VD=vascular discoloration Ranger Russet Russet Burbank Russet Norkotah AO06070 1KF*** OR08014 4 AO06191 1*** AOR07919 4 AOR08031 3 OR09126 1 AOR09012 1 2014 KBREC Statewide Russet Comments Long, skinny, misshaped, crooky Ugly net, pointy, misshaped, crooky, growth cracks No yield, small, typy but pointy, folded bud ends Misshaped, dents, pears, not fresh, thumbnail cracks, irregular shape Long, lenticel scaring, misshaped, not fresh, shatter bruised Typy, dark, small, apical sprouts Dents, folded bud end, nice skin, not bad Typy, chicken tracks, apical sprouts, flat, thumbnail cracks Blocky, plump, not bad, pointy stem ends, skinning Ugly net, misshaped, not back blocky, thumbnail cracks 21
AOR06576 1*** AOR06664 1 AOR06706 2 AOR06709 1 AOR07519 5 AOR07520 4 AOR08296 2 AOR08405 3 AOR07821 1 AOR08416 2 AOR08433 1 AOR08506 3 AOR08537 1 OR09SP39 1 OR08OP284 2*** POR11BDPS1 8 POR11NC2 1 POR11NCK1 2*** POR11NCV1 1 AOR08032 1*** AOR08075 1 AOR07769 3 AOR07781 5*** AOR08638 2 AOR061026 4 AOR07926 1 AOR07940 4 AOR08541 1 POR11PG61 3 Light, smooth, not bad, long, some bruising, typy, not fresh Deep eyes, misshaped, pears, not fresh, blotchy skin Typy, nice skin, to small, lenticel scaring Pears, round, lumpy, folded bud ends Dark, round, skinning, not bad, dented, some skinning Ugly net, typy, blocky, some pointy stem ends, thumbnail cracks Dents, pears, not fresh, small, apical sprouts, black dot Process, typy, not bad, some pointy, thumbnail cracks Nice skin, irregular shape and size, thumbnail cracks, not bad Typy, dents, flat not fresh, nice net Pears, dark, rhizoc, sticky solon, flat Pears, small, pointy stem end, not fresh Pointy, apical sprouts, smaller, not bad, growth cracks, irregular size Growth cracks, deep eyes, lumpy, drop Typy, small, nice, long, keep Plump, some flat, irregular shapes, not black dot resistant, typy, nice net keep Typy, big, blocky, fair, no yield, short, pears Long, knobs, misshaped, bruised, process Nice net, small but typy, round Blocky, like, typy, keep, nice net Apical sprouts, growth cracks, long, typy, nice Nice net, pears, apical sprouts, typy but pointy Typy, deep eyes, nice net, pointy stem end, blocky Folded bud ends, round, black dot, nice net, pears Thumbnail cracks, rough hide, long, skinny, flat Apical sprouts, small, rough skin, typy, pears, bruising Long, typy, few misshapes, nice, keep, some pointy Typy, nice, keep, dark net, long Dark net, round, to small, bruised, thumbnail cracks, heavy russeting, black dot, not bad 22
Ranger Russet Entries Retained for Further Evaluation in 2015 2014 KBREC Statewide Russet Comment Russet Burbank 2014 KBREC Statewide Russet Comment Long, skinny, misshaped, crooky Ugly net, pointy, misshaped, crooky, growth cracks Russet Norkotah AOR06576 1 No yield, small, typy but pointy, folded bud ends Light, smooth, not bad, long, some bruising, typy, not fresh AOR07821 1 OR08OP284 2 Nice skin, irregular shape and size, thumbnail cracks, not bad Typy, small, nice, long, keep POR11NCK1 2 AOR08032 1 Typy, big, blocky, fair, no yield, short, pears Blocky, like, typy, keep, nice net 23
AOR08075 1 AOR07781 5 Apical sprouts, growth cracks, long, typy, nice Typy, deep eyes, nice net, pointy stem end, blocky Differnece in Return from Russet Norkotah ($/Acre) 3000 2500 2000 1500 1000 500 0 500 1000 1500 Fresh Value* AOR06576 1 AOR07781 5 AOR08638 2 AOR08031 3 AO06191 1 Ranger Russet AOR08537 1 POR11BDPS1 8 AOR061026 4 AOR08405 3 AOR07919 4 AOR09012 1 AOR06664 1 AOR08032 1 AOR06709 1 POR11NCK1 2 OR09126 1 POR11PG61 3 AOR08075 1 AOR08506 3 OR08OP284 2 AOR07821 1 AO06070 1KF POR11NC2 1 AOR06706 2 AOR07520 4 AOR08416 2 AOR08541 1 OR08014 4 AOR08433 1 AOR07769 3 OR09SP39 1 AOR08296 2 Russet Norkotah Russet Burbank AOR07519 5 AOR07940 4 POR11NCV1 1 AOR07926 1 *Difference in gross return per acre (Fresh Value) from Russet Norkotah calculated by subtracting the gross return of Russet Norkotah from the gross return of the particular entry. Entries with white colored bars may not appeal to fresh market consumers due to the undesirable shape or appearance. Refer to page 14 for parameters used to collect gross return to growers. 24
25 2014 Tri State Russet Trial Location: OSU KBREC Klamath Falls, OR Planting Date: May 15 Vine Kill Date: September 2 Harvest Date: September 23 Days to Vine kill: 111 Fertility: 180 80 200 215 In Row Spacing: 9.25 inch The Tri state Russet Trial evaluates relatively advanced selections originally selected in both Oregon and Idaho. Entries are evaluated for both fresh market and processing potential in Washington, Idaho, and Oregon. Disposition of entries in this trial are determined by the Tri state Technical Committee and if retained, advance to the Western Regional Russet Trial. Despite a warmer season, potato plots at the KBREC site performed above average. The following is a summary of the Klamath Falls field results. Stand Counts 30 Day Slow emergence: AO06191 1 (75%), A0073 2 (69%) 45 Day Full emergence: All entries but A0073 2 (83%) had greater than 90% final emergence. Plant and Tuber Growth and Development Average Tuber Number Per Plant Most: A06096 2 (10), A06914 3CR (8) Least: COA05149 2 (5), AO06191 1 (4) Average Tuber Size (oz.) Largest: A03141 6 (9.1), AO06191 1 (8.2) Smallest: A06020 8 (5.0), A08014 11TE (4.4) Undersized Tubers (<4 oz.) cwt/acre Most: A08014 11TE (80), A06096 2 (75) Least: A07103 1T (15), A08014 9TE (13) Yield and Economic Data Total Yield (cwt/acre) Highest: A06096 2 (664), A03141 6 (553) Lowest: A08014 11TE (378), COA05149 2 (377) US No. 1 Yield (cwt/acre) Highest: A06408 99LB (349), A06914 3CR (338) Lowest: Russet Norkotah (206), A08014 11TE Carton Yield (6 20 oz.) cwt/acre Highest: A07008 4T and A07103 1T (270) Lowest: A08014 11TE (112)
Gross Return ($/acre) Fresh Market Highest: OR09126 1, AO06070 1KF Fresh Market Lowest: AOR06987 4, AOR06987 6 Tuber Defect Incidence (40 tuber sample of 8 12 oz. tubers) Hollow Heart Notable Defects: AO06191 1 (15%), AO03123 2 (10%) Impact Bruise Notable Defects: A06862 18VR (20%), A06020 8 and A0073 2 (17%) Total Yield US # 1 s* > 4 oz. US # 2 s > 4 oz. Culls & <4 oz. Oversized >20 oz. Carton Yield 100 50 count (US 1's 6 20 oz) (cwt/a) STATS** % of Total Yield* % of Total Yield (cwt/a) Ranger Russet 539 BCD 57 26 15 2 47 251 Russet Burbank 471 BCDEF 46 37 16 0 32 151 Russet Norkotah 386 F 54 33 11 2 39 152 A0073 2 438 DEF 74 13 11 1 59 259 A03141 6 553 B 48 34 11 7 43 238 A06014 14TE 416 EF 52 28 18 2 36 152 A06020 8 446 CDEF 49 26 25 0 34 153 A06096 2 665 A 48 34 18 0 36 240 A06408 99LB 436 DEF 80 6 12 2 62 271 A06862 18VR 531 BCD 56 26 10 8 47 251 A06914 3CR 548 BC 62 19 19 1 39 216 A07008 4T 549 BC 60 26 11 3 49 270 A07103 1T 467 BCDEF 67 22 8 3 58 270 A08014 11TE 379 F 46 28 25 1 30 112 A08014 9TE 436 DEF 67 24 6 2 55 239 AO03123 2 443 DEF 66 20 13 2 57 251 AO06191 1 405 F 80 3 9 8 67 273 AOR06070 1KF 516 BCDE 46 36 16 2 35 182 COA05149 2 378 F 71 12 8 8 61 230 LSD (0.05) 104 26
US # 1 Yield 6 10 oz. Specific Gravity Internal Defects (%) 10 14 oz. tubers*** %* >4 oz. STATS** 6 10 (cwt/a) 4 6 oz. >10 oz. HH IB SEB VD oz. Ranger Russet 306 ABCDE 18 37 45 1.086 0 8 13 20 Russet Burbank 218 DEF 31 43 26 1.082 0 8 20 10 Russet Norkotah 206 EF 26 41 33 1.070 0 5 13 5 A0073 2 326 ABCD 20 48 31 1.091 0 18 15 0 A03141 6 265 ABCDEF 10 25 65 1.085 8 0 18 40 A06014 14TE 215 DEF 30 41 30 1.075 5 0 18 8 A06020 8 220 CDEF 31 43 26 1.086 0 18 20 30 A06096 2 318 ABCDE 24 42 34 1.081 0 5 18 0 A06408 99LB 349 A 22 50 28 1.091 0 15 10 15 A06862 18VR 298 ABCDE 16 34 51 1.091 0 20 23 0 A06914 3CR 339 AB 36 38 26 1.081 0 3 30 5 A07008 4T 331 ABC 18 40 42 1.078 0 3 25 8 A07103 1T 315 ABCDE 15 30 56 1.085 0 0 8 0 A08014 11TE 175 F 36 43 21 1.082 0 8 18 8 A08014 9TE 294 ABCDE 18 32 49 1.070 0 8 30 0 AO03123 2 291 ABCDE 14 38 48 1.087 10 5 30 3 AO06191 1 324 ABCD 16 33 51 1.097 15 3 8 5 AOR06070 1KF 237 BCDEF 23 37 40 1.095 5 3 25 0 COA05149 2 268 ABCDEF 14 38 47 1.072 0 5 8 30 LSD(0.05) 111 27 Stand % Average Tuber Wt. (oz.) Number tubers/plant Green (1 5 none) Growth Cracks (1 5 none) Skin Color (1 5 dark) Russeting (1 5 hvy) Shape (1 5 long) Shape Uniformity (1 5 best) Ranger Russet 100 7.5 6 3.8 4.4 3.9 4.1 5.0 3.1 3.6 Russet Burbank 98 5.6 7 4.5 3.6 4.4 4.4 4.9 2.9 3.9 Russet Norkotah 98 6.6 5 4.3 4.5 4.8 4.6 4.6 3.5 4.0 A0073 2 83 6.1 7 4.3 4.9 4.1 4.1 4.0 3.9 4.0 A03141 6 97 9.1 5 3.8 4.6 2.9 3.1 5.0 2.9 3.5 A06014 14TE 97 6.2 6 4.0 2.5 4.8 4.9 4.9 3.5 3.9 A06020 8 98 5.1 8 3.5 4.5 3.1 2.9 4.8 3.5 3.9 A06096 2 99 5.8 10 3.8 4.5 3.0 3.1 5.0 3.4 4.1 A06408 99LB 95 6.0 6 4.1 5.0 2.9 3.0 3.8 3.8 3.8 A06862 18VR 97 8.0 6 3.5 4.0 3.6 3.6 4.3 13.1 3.5 A06914 3CR 100 5.5 8 3.8 3.5 3.3 3.3 3.9 3.4 4.0 Eye Depth (1 5 shal.)
A07008 4T 100 6.7 7 4.1 4.3 4.4 4.9 5.0 4.0 3.4 A07103 1T 95 8.1 5 3.9 4.0 3.6 3.8 4.3 3.6 4.0 A08014 11TE 97 4.4 8 4.5 3.9 4.4 4.5 4.0 10.8 3.9 A08014 9TE 92 8.0 5 4.5 4.5 3.6 4.0 3.8 3.1 3.9 AO03123 2 95 6.7 6 4.4 4.9 3.5 3.4 4.6 3.6 3.9 AO06191 1 97 8.2 4 4.1 4.9 4.9 4.9 4.4 4.5 4.0 AOR06070 1KF 95 6.7 7 3.6 4.0 4.0 4.0 4.8 3.1 4.0 COA05149 2 92 7.7 5 4.3 4.9 4.6 4.8 4.0 3.9 4.0 *Percent values may not total 100% due to rounding **Entries showing the same letter are not significantly different at the 5% level ***Internal Defects: HH=hollow heart, IB= impact bruise, SEB=stem end browning, VD= vascular discoloration CWT/Acre 700 600 500 400 300 200 100 0 Total and Market Yield Marketable Yield (U.S #1's and #2's) 28
Difference in Return from Russet Norkotah ($/Acre) 3000 2500 2000 1500 1000 500 0 500 Fresh Value* *Difference in gross return per acre (Fresh Value) from Russet Norkotah calculated by subtracting the gross return of Russet Norkotah from the gross return of the particular entry. Entries with white colored bars may not appeal to fresh market consumers due to the undesirable shape or appearance. Refer to page 14 for parameters used to collect gross return to growers. Ranger Russet 2014 KBREC Tri State Russet Comment Russet Burbank 2014 KBREC Tri State Russet Comment Pointy, long, crooky, skinny, blotchy skin Pointy, knobs, crooky, misshaped Russet Norkotah A0073 2 Not bad, blotchy skin, pointy, crooky Not bad, small, rhizoc, no yield, short, dents 29
A03141 6 A06014 14TE Long, big, not fresh, dents, pears, pointy stem end, poor, misshaped Long, growth cracks, to skinny, misshaped A06020 8 A06096 2 Lenticel scaring, drop, irregular shape, pointy, crooks Long, skinny, rhizoc, not fresh, misshaped, Apical sprouts A06408 99LB A06862 18VR Small, impact bruise, hard bite, to round, not fresh, thumb nail cracks, Fusarium Shatter bruise, apical sprouts, ugly, folded bud ends, growth cracks, thumb nail cracks A06914 3CR A07008 4T Growth cracks, dented, green, not fresh, lenticel scaring, irregular shape Dark, long, typy, deep eyes, long, some misshaped, 30
A07103 1T A08014 11TE Dents, misshaped, pears, big, blocky, blotchy skin Growth cracks, shatter bruised, small, no yield thumb nail cracks A08014 9TE AO03123 2 Pears, growth cracks, dented, apical sprouts, plump, round, not fresh Pointy, long, blotchy skin, process only, typy, not fresh, a little lumpy AO06191 1 AOR06070 1KF Dark, typy, low set, fresh, keep, best of trial Pointy stem end, crooky, green, dents, no uniformity, pears COA05149 2 Round, plumpy, dented, not fresh, big and blocky, flat 31
2014 Preliminary Yield (PYT 2) Specialty Trial Location: OSU KBREC Klamath Falls, OR Planting Date: May 15 Vine Kill Date: September 2 Harvest Date: September 23 Days to Vine kill: 111 Fertility: 180 80 200 215 In Row Spacing: 9.25 inch The PYT 2 Specialty Trial evaluates recently selected clones, often only two years removed from singlehill selection. Retained entries are further evaluated in replicated trials at several Oregon locations before advancing (if applicable) to the Tri state trial which includes testing locations in Washington and Idaho. This trial included 2 standard varieties and 22 new entries. The Oregon Potato Variety Development Team chose to advance 10 selections to the Statewide Specialty Trial in 2015 and discarded the remaining selections due to poor performance. Only retained selections are listed in the following tables. Female Parent Male Parent AOR06296 1 A00286 3Y ND4659 5R POR12PG7 1 A757 Or bulk 2/23 POR12PG10 1 B26 Or bulk 2/13 POR12PG26 2 (Alaska 8 3 x OR04198) 6 Or bulk 2/23 POR12PG28 3 (Alaska 8 3 x OR04198) 9 Or bulk 3/4 POR12PG69 1 A558 OR Bulk 3/23 POR12PG73 1 A541 Premier POR12PG76 2 A558 OR Bulk 2/7 OR10220 1 YAGANA POR02PG26 5 32
2014 Statewide Specialty Trial Location: OSU KBREC Klamath Falls, OR Planting Date: May 15 Vine Kill Date: September 2 Harvest Date: September 23 Days to Vine kill: 111 Fertility: 180 80 200 215 In Row Spacing: 9.25 inch The Statewide Specialty Trial evaluates selections retained from the PYT 2 Specialty Trial at three locations in Oregon. As mentioned earlier, selections retained from this trial are advanced to the Tristate Trial which includes testing locations in Washington and Idaho. Testing locations in Oregon represent diverse climatic conditions (hot, long season and cool, short season) which allow for the retention of selections that exhibit stability over multiple locations. Oregon selections remain in the Statewide Trial until they complete Tri state and Western Regional evaluation or are discarded. Despite a warmer than average growing season and high nematode pressure, potato plots at the KBREC site performed above average. The following is a summary of the Klamath Falls field results. Stand Counts 30 Day Slow emergence: POR10PG3 9 (77%), POR11PG39 3 (87%) 45 Day Full emergence: All entries had greater than 98% final emergence Plant and Tuber Growth and Development Average Tuber Number Per Plant Most: POR11PG62 3 and POR10PG3 5 (18) Least: Red LaSoda (6), Yukon Gold (5) Average Tuber Size (oz.) Largest: Red LaSoda (8.0), Yukon Gold (6.3) Smallest: POR11PG62 13 (1.5), POR10PG3 9 (0.8) C Size Tubers (< 1.875 inch diameter and <4 oz.) cwt/acre Most: POR11PG62 3 (268), POR11PG62 13 (187) Least: Red LaSoda (5), Yukon Gold (4) B Size Tubers (1.875 2.25 inch diameter and <4 oz.) cwt/acre Most: POR10PG3 5 (211), POR11PG62 6 (183) Least: POR10PG3 9 (14), Red LaSoda (23) Yield Data Total Yield (cwt/acre) Highest: POR11PG16 1 (762), POR11PG20 2 (650) Lowest: POR11PG62 13 (279), POR10PG3 9 (147) 33
US No. 1 Yield (cwt/acre) Highest: POR11PG16 1 (603) Lowest: POR11PG62 13 (242), POR10PG3 9 (93) Tuber Defect Incidence (40 tuber sample) External Defects High incidence of growth cracks observed in Red LaSoda and moderate greening observed in POR11PG16 1. Internal Defects Impact Bruise: POR11PG20 2 (15%) Vascular Discoloration: POR10PG3 9 (17%) Skin Color Primary skin color (1 5 dark) Flesh Color Primary flesh color (1 5 dark) Total Yield US # 1's > 0 oz. Culls > 0 oz.*** External Defects (1 5 none) Growth crack (cwt/a) STATS** % of Total Yield* Green Knobs Yukon Gold Yellow 1.8 Yellow 2.3 390 EFG 78 20 4.3 4.9 5.0 Red LaSoda Red 3.6 Yellow 1.0 539 CD 52 46 4.0 2.6 4.5 P. Majesty Purple 5.0 Purple 5.0 522 CD 80 20 5.0 4.8 5.0 POR10PG3 5 Red/Yellow 3.6 Yellow 4.1 446 DEF 85 15 4.4 5.0 5.0 POR10PG3 9 Yellow 2.4 Yellow 4.0 148 I 63 37 4.0 4.8 5.0 AOR06267 3 Red 4.0 Yellow 2.0 441 DEFG 80 20 3.6 5.0 5.0 POR11PG4 2 Yellow 3.0 Yellow 3.3 353 FGH 93 7 4.3 5.0 5.0 POR11PG8 1 Purple 5.0 Purple 5.0 593 BC 84 16 4.6 4.5 5.0 POR11PG16 1 Red 3.6 Yellow 3.5 763 A 73 27 3.0 4.3 4.0 POR11PG20 2 Yellow 2.5 Yellow 3.1 658 B 73 27 3.5 5.0 4.6 POR11PG39 3 Yellow 3.3 Yellow 4.1 338 GH 83 17 4.1 5.0 5.0 POR11PG48 1 Purple 4.9 Purple 4.3 491 CDE 78 21 4.9 4.1 4.6 POR11PG62 3 Yellow/Red 1.5 Yellow 1.9 409 EFG 84 16 4.1 4.9 4.8 POR11PG62 6 Yellow 2.0 Yellow 3.4 478 DE 83 17 3.5 4.9 5.0 POR11PG62 13 Purple 4.0 Purple 4.8 279 H 87 13 5.0 5.0 5.0 LSD (0.05) 102 *Percent values may not total 100% due to rounding **Entries showing the same letter are not significantly different at the 5% level ***Including >14oz. and #2 s 34
US # 1 Yield Specific Gravity Internal Defects (%)**** %* (cwt/a) STATS** C B 4 6 6 10 10 14 VD IBS SEB IB size size oz. oz. oz. Yukon Gold 338 CDE 1 11 27 40 21 1.060 3 0 5 3 Red LaSoda 344 CDE 2 8 18 42 30 1.069 0 0 0 0 P. Majesty 420 BC 9 34 31 24 2 1.077 0 0 0 0 POR10PG3 5 381 CD 21 55 17 7 0 1.079 3 0 0 3 POR10PG3 9 93 G 84 15 1 0 0 1.083 18 0 0 8 AOR06267 3 353 CDE 18 41 20 21 1 1.088 0 0 8 0 POR11PG4 2 327 DEF 21 51 21 7 0 1.080 8 0 3 8 POR11PG8 1 500 B 9 35 28 24 3 1.086 0 0 0 0 POR11PG16 1 604 A 4 19 29 32 16 1.077 3 3 0 8 POR11PG20 2 490 B 4 23 32 33 8 1.064 3 0 0 15 POR11PG39 3 280 EF 27 45 16 12 0 1.069 0 0 3 3 POR11PG48 1 395 CD 2 12 29 41 17 1.076 0 0 3 3 POR11PG62 3 342 CDE 78 19 2 0 0 1.082 0 0 8 0 POR11PG62 6 397 CD 17 46 25 12 0 1.078 0 0 0 0 POR11PG62 13 243 F 77 21 2 0 0 1.076 0 0 0 0 LSD (0.05) 88 Stand % Average Tuber Wt. (oz.) Number tubers/plant Shape Uniform (1 5 best) Rhizoc (1 5 none) Russeting (1 5 hvy) Shape (1 5 long) Size uniformity (1 5 best) Shape uniformity (1 5 best) Yukon Gold 100 6.3 5 3.5 4.1 1.5 2.0 3.0 3.5 4.3 Red LaSoda 100 8.0 6 3.1 3.4 1.4 2.3 2.3 3.1 3.4 P. Majesty 100 3.5 13 3.1 4.4 3.5 2.8 3.1 3.1 4.1 POR10PG3 5 100 2.2 18 4.5 3.4 1.1 1.0 4.5 4.5 3.4 POR10PG3 9 100 0.8 15 3.8 3.5 1.1 2.1 4.5 3.8 3.3 AOR06267 3 100 3.2 12 4.0 3.1 5.0 4.5 4.0 4.0 4.3 POR11PG4 2 100 2.2 14 4.5 4.1 2.0 1.0 4.5 4.5 3.5 POR11PG8 1 100 3.4 15 3.8 4.1 2.3 2.3 4.0 3.8 4.3 POR11PG16 1 99 4.8 14 3.5 3.8 1.4 2.5 3.0 3.5 3.8 POR11PG20 2 98 4.4 13 3.8 3.6 2.3 1.8 3.9 3.8 4.3 POR11PG39 3 100 2.4 12 3.9 2.8 2.3 4.1 4.1 3.9 4.5 POR11PG48 1 100 5.8 7 3.1 4.8 1.5 1.5 3.9 3.1 4.0 POR11PG62 3 100 2.0 18 4.5 4.1 1.0 5.0 4.5 4.5 4.0 POR11PG62 6 100 2.6 16 3.8 2.5 1.3 1.4 3.9 3.8 4.4 POR11PG62 13 100 1.5 16 4.4 3.5 1.5 4.9 4.5 4.4 4.5 Eye Depth (1 5 shal.) 35
*Percent values may not total 100% due to rounding **Entries showing the same letter are not significantly different at the 5% level ****Internal Defects: VD= Vascular Discoloration, IBS= internal brown center, SEB=stem end browning, IB= impact bruise Yukon Gold Red LaSoda Purple Majesty POR10PG3 5 POR10PG3 9 AOR06267 3 POR11PG4 2 POR11PG8 1 POR11PG16 1 POR11PG20 2 POR11PG39 3 POR11PG48 1 POR11PG62 3 POR11PG62 6 POR11PG62 13 2014 KBREC State Specialty Comments Bronzing, lenticel scaring, misshaped, impact bruise Growth cracks, misshaped, big, lumpy, poor, folded bud ends Dingy, bronzing, culls, dents Sprouts, fair, knobby ends, lumpy Lumpy, sprouts, impact bruise, drop Bronzing, dingy, pears, pointy, lenticel scaring, fair Pink tones, sprouts, small, fair Bronzing, pears, misshaped, drop lumpy, dingy, silver scurf Growth cracks, sprouts, drop, poor, folded bud ends Black dot, impact bruise, no shine, russeting, pointy stem ends, pears Sprouts, pink tones, rhizoc, pears, pointy, stem end rot Shatter bruise, culls, bronzing, misshaped, folded bud ends, Fusarium Fingerling, pink splash, typy Lenticel scaring, rhizoc, small impact bruise, fair, pointy stem end Bronzing, no shine, poor, dull, stem end rot, broken pieces Entries Retained for Further Evaluation in 2015 Yukon Gold 2014 KBREC Statewide Specialty Comment Red LaSoda 2014 KBREC Statewide Specialty Comment Bronzing, lenticel scaring, misshaped, impact bruise Growth cracks, misshaped, sprouts, large, lumpy, poor, folded bud ends, shatter bruised Purple Majesty POR10PG3 5 36
Dingy, bronzing, crap, culls, dents Sprouts, fair, knobby ends, lumpy AOR06267 3 POR11PG20 2 Bronzing, dingy, pears, pointy, lenticel scaring, fair Black dot, impact bruise, no shine, russeting, pointy stem ends, pears POR11PG62 3 POR11PG62 6 Lenticel scaring, rhizoc, small impact bruise, fair, pointy stem end Lenticel scaring, rhizoc, small impact bruise, fair, pointy stem end 37
38 2014 Tri State Specialty Trial Location: OSU KBREC Klamath Falls, OR Planting Date: May 15 Vine Kill Date: September 2 Harvest Date: September 23 Days to Vine kill: 111 Fertility: 180 80 200 215 In Row Spacing: 9.25 inch The Tri state Specialty Trial evaluates relatively advanced selections originally selected in both Oregon and Idaho. Entries are evaluated for both fresh market and processing potential in Washington, Idaho, and Oregon. Disposition of entries in this trial are determined by the Tri state Technical Committee and if retained, advance to the Western Regional Russet Trial. Despite a warmer season, potato plots at the KBREC site performed above average. The following is a summary of the Klamath Falls field results. Stand Counts 30 Day Slow emergence: Chieftain (86%), A02267 1Y (88%) 45 Day Full emergence: All entries had greater than 90% final emergence. Plant and Tuber Growth and Development Average Tuber Number Per Plant Most: POR07PG20 2 (16), A05182 7RY (14) Least: Yukon Gold (7), Chieftain (10) Average Tuber Size (oz.) Largest: Chieftain (6.3), Yukon Gold (6.1) Smallest: POR07PG20 2 (2.6), POR07PG3 1 (3.2) C Size Tubers (<1.875 inch diameter and <4 oz.) cwt/acre Most: POR07PG3 1 (40), NDA050237B 1R and A05182 7RY (34) Least: Yukon Gold (7), Chieftain (9) B Size Tubers (1.875 2.25 inch diameter and <4 oz.) cwt/acre Most: A05182 7RY (177), POR07PG20 2 (156) Least: Yukon Gold (38), Chieftain (46) Yield Data Total Yield (cwt/acre) Highest: NDA081451CB 1CY (713), A02267 1Y (688) Lowest: POR07PG3 1 (418), Yukon Gold (448) US No. 1 Yield (cwt/acre) Highest: NDA081451CB 1CY (588), A05182 7RY (559) Lowest: Yukon Gold (353), POR07PG3 1 (386)
Tuber Defect Incidence (40 tuber sample) External Defects Moderate greening observed in A02267 1Y AND NDA081451CB 1CY. Chieftain tubers had a high incidence of growth cracks. Internal Defects Impact Bruise: Yukon Gold (15%), A05182 7RY (10%) Internal Brown Spot: Yukon Gold (20%), POR07PG20 2 (15%) Skin Color Primary skin color (1 5 dark) Flesh Color Primary flesh color (1 5 dark) Total Yield US # 1's > 0 oz. Culls > 0 oz.*** (cwt/a) STATS** % of Total Yield* Green External Defects (1 5 none) Growth crack Chieftain Red 3.8 Yellow 1.0 683 ABC 79 21 3.8 2.1 3.6 NDA050237B 1R Red 4.0 Yellow 1.3 570 ABC 92 8 4.1 3.9 3.9 A05180 3PY Purple 4.8 Yellow 1.5 609 ABC 85 15 4.5 3.4 2.9 COA07365 4RY Red 4.0 Yellow 2.0 495 ABC 82 18 3.5 4.1 3.6 Yukon Gold Yellow 1.5 Yellow 1.8 426 C 76 24 3.9 4.4 3.3 A02267 1Y Yellow 3.3 Yellow 2.0 612 AB 79 21 2.1 5.0 4.1 A05182 7RY Pink 2.4 Yellow 2.0 678 ABC 93 7 3.4 4.5 4.4 POR07PG20 2 Y/PK 2.3 Yellow 3.9 428 BC 89 11 3.6 5.0 4.8 POR07PG3 1 Yellow 1.5 Yellow 2.6 398 C 92 8 3.8 4.5 4.0 NDA081451CB 1CY Yellow 1.5 Yellow 2.1 692 A 82 18 2.3 3.9 3.9 LSD (0.05) 237 *Percent values may not total 100% due to rounding **Entries showing the same letter are not significantly different at the 5% level ***Including >14oz. and #2 s Shatter Bruise 39
(cwt/a) STATS** US # 1 Yield C size B size %* Specific 4 6 oz. 6 10 oz. 10 14 oz. Internal Defects (%)**** Gravity HH SEB VD IB Chieftain 480 AB 2 10 20 43 25 1.070 0 5 0 3 NDA050237B 1R 522 AB 7 29 33 28 4 1.070 0 0 0 8 A05180 3PY 500 AB 4 22 26 40 8 1.077 0 0 0 10 COA07365 4RY 404 AB 8 31 32 27 2 1.079 0 0 0 3 Yukon Gold 294 B 2 13 17 43 25 1.077 0 13 10 10 A02267 1Y 466 AB 3 21 25 36 15 1.077 0 0 0 5 A05182 7RY 620 AB 5 29 26 30 10 1.085 0 10 0 5 POR07PG20 2 379 AB 20 41 22 14 4 1.068 0 0 20 3 POR07PG3 1 366 AB 11 33 30 20 6 1.070 0 0 3 3 NDA081451CB 1CY 568 A 2 15 25 46 11 1.093 0 0 0 3 LSD (0.05) 229 Stand % Average Tuber Wt. (oz.) Number tubers/plant Rhizoc (1 5none) Russeting (1 5 hvy) Shape (1 5 long) Size Uniformity (1 5 best) Shape Uniformity (1 5 best) Chieftain 95 6.4 9 3.3 2.0 3.1 3.4 3.3 3.8 NDA050237B 1R 99 3.7 13 4.4 1.5 1.6 3.8 4.0 3.9 A05180 3PY 90 4.5 13 4.1 1.5 1.8 3.9 3.8 3.6 COA07365 4RY 99 3.6 12 4.3 1.6 2.5 4.0 3.9 4.1 Yukon Gold 96 6.3 6 3.9 1.9 2.0 3.9 3.4 4.1 A02267 1Y 94 4.5 12 4.9 1.6 1.9 3.9 3.6 3.8 A05182 7RY 100 3.9 15 3.6 1.6 1.9 3.8 4.1 3.9 POR07PG20 2 95 2.4 16 3.6 1.5 1.3 4.4 4.0 4.3 POR07PG3 1 97 3.1 11 3.9 1.9 1.9 4.0 4.0 4.3 NDA081451CB 1CY 95 4.7 13 4.8 1.9 1.5 3.8 4.3 4.4 *Percent values may not total 100% due to rounding **Entries showing the same letter are not significantly different at the 5% level ****Internal Defects: HH=hollow heart, SEB=stem end browning, VD=vascular discoloration, IB= impact bruise Eye Depth (1 5 shal.) 40
Chieftain 2014 KBREC Tri State Specialty Comment NDA050237B 1R 2014 KBREC Tri State Specialty Comment Sticky stolon, growth cracks, misshaped, bronzing, large, dull, skinning Not bad, typy, some skinning, scab, shatter bruised A05180 3PY COA07365 4RY Skinning, growth cracks, sticky stolon, folded bud ends, bronzing, bright, fair Not bad, black dot, limited russeting, smooth, green, bright color, fair Yukon Gold A02267 1Y Lenticel scaring, not typy for Yukon, flat, growth cracks Purple eyes, green, scab, low black dot, fair, sprouting A05182 7RY POR07PG20 2 Really nice, typy, keep, impact bruise, rhizoc, blush color Pointy and knobby stem end, rhizoc, apical sprouting, 41
POR07PG3 1 NDA081451CB 1CY Dull, bronzing, scab, sprouts, some pink eyes others aren t Typy, chipper like, green, growth cracks, lenticel scaring 2014 Preliminary Yield (PYT 2) Chip Trial Location: OSU KBREC Klamath Falls, OR Planting Date: May 15 Vine Kill Date: September 2 Harvest Date: September 23 Days to Vine kill: 111 Fertility: 180 80 200 215 In Row Spacing: 9.25 inch The PYT 2 Chip Trial evaluates recently selected clones, often only two years removed from single hill selection. Retained entries are further evaluated in replicated trials at several Oregon locations before advancing (if applicable) to the Tri state trial which includes testing locations in Washington and Idaho. Five selections were evaluated with two retained for further evaluation. Clone Female Parent Male Parent AOR06209 3 A91790 13 MSJ316 A AOR06209 5 A91790 13 MSJ316 A 42
43 2014 Statewide Chip Trial Location: OSU KBREC Klamath Falls, OR Planting Date: May 15 Vine Kill Date: September 2 Harvest Date: September 23 Days to Vine kill: 111 Fertility: 180 80 200 215 In Row Spacing: 9.25 inch Chipping potatoes comprise a significant portion of Klamath Basin acreage and identification of public varieties suitable for export remains a high priority for Basin producers. Trials were initiated in 2008 and 2009 with funding from the Oregon Potato Commission to identify acceptable chipping varieties for export markets using advanced selections and recently released varieties from the Tri State, Southwest, North central, and Eastern breeding programs and have continued annually. In 2014 seven varieties and advanced chipping selections were evaluated for yield, grade, processing quality, and storability to determine their suitability to meet existing export demands for raw product. All field data was collected at the KBREC site. Tubers from each replication were placed in both short and long term commercial storage with processing evaluations conducted by Baley Trotman Farms. Results for 2014 are listed below. Stand Counts 30 Day Slow emergence: AOR00242 2 (87%) 45 Day All entries but AOR00242 2 (89%) had greater than 95% final emergence Plant and Tuber Growth and Development Average Tuber Number Per Plant Most: AOR09034 3 (13), AOR00242 2 (12) Least: Chipeta (6), OR09253 1 (7) Average Tuber Size (oz.) Largest: AOR09032 5 (4.8), Chipeta (4.1) Smallest: AOR00242 2 (2.4), AOR09034 3 (2.7) Undersized Tubers (<4 oz.) cwt/acre Most: AOR09032 5 (109), AOR09032 5 (108) Least: Chipeta (31), Atlantic (48) Yield Data Total Yield (cwt/acre) Highest: AOR09034 3 (659), Atlantic (503) Lowest: OR09253 1 (433), AOR09032 5 (446) Marketable Yield >4 oz. (cwt/acre) Highest: AOR09034 3 (497), OR09256 2 (421) Lowest: Chipeta (275), AOR09032 5 (317)
Tuber Defect Incidence (40 tuber sample) External Defects: Moderate greening observed in AO09034 3. AOR09034 3 and APR09032 5 had a high incidence of shatter bruise. Internal Defects Impact Bruise: AOR09032 5 (17%), OR09256 2, AOR09032 5, AOR09034 3 (12%) Hard Bite: OR09253 1 (12%), Atlantic (7%) Total Yield > 4 oz. < 4 oz. Culls (cwt/a) STATS** % of Total Yield* Oversize > 14 oz. Skin color (1 5 dark) Atlantic 504 B 77 10 7 6 2.1 Chipeta 475 B 58 7 9 26 2.3 OR09253 1 433 B 76 12 6 6 1.6 OR09256 2 503 B 84 13 1 2 2.9 AOR00242 2 498 B 75 22 3 0 1.5 AOR09032 5 446 B 71 24 5 0 1.9 AOR09034 3 659 A 75 15 9 1 1.6 LSD (0.05) 99 (cwt/a) Yield US # 1 (>4 oz.) STATS** 4 6 oz. %* 6 10 oz. 10 14 oz. Green External Defects (1 5 none) Growth crack Knobs Shatter Atlantic 389 BC 21 56 23 3.5 4.6 4.8 4.0 Chipeta 275 D 15 57 28 3.3 4.1 5.0 3.9 OR09253 1 328 BCD 21 56 23 3.1 4.6 5.0 3.8 OR09256 2 421 AB 32 53 14 4.2 4.6 5.0 4.0 AOR00242 2 376 BC 34 58 9 3.7 4.4 4.9 3.1 AOR09032 5 317 CD 41 50 9 4.2 4.8 4.9 2.6 AOR09034 3 497 A 35 55 10 3.6 3.8 4.9 2.3 LSD (0.05) 97 *Percent values may not total 100% due to rounding **Entries showing the same letter are not significantly different at the 5% level 44
Stand % Wt. (oz.) Average Tuber Number tubers/plant Internal Defects (%)*** Specific Gravity HH BC SEB VD HB IB Atlantic 100 3.3 7 1.088 0 0 0 0 8 5 Chipeta 97 4.4 5 1.091 0 0 0 0 0 8 OR09253 1 95 3.2 7 1.109 0 0 3 10 13 5 OR09256 2 97 3.0 8 1.087 0 0 0 0 8 13 AOR00242 2 89 2.5 11 1.084 0 0 13 10 3 13 AOR09032 5 100 6.0 9 1.090 0 0 3 3 5 18 AOR09034 3 95 2.8 12 1.088 0 0 3 0 3 13 Rhizoc (1 5 best) Russeting (1 5 hvy) Shape (1 5 long) Size uniformity (1 5 best) Shape uniformity (1 5 best) Eye Depth (1 5 shal.) Atlantic 2.8 3.1 2.2 3.5 3.8 3.9 Chipeta 2.1 2.0 2.3 2.6 3.5 3.9 OR09253 1 3.1 1.8 1.5 3.5 3.9 4.0 OR09256 2 4.6 3.0 1.5 3.8 4.1 3.6 AOR00242 2 4.8 1.5 1.6 3.8 3.9 3.9 AOR09032 5 4.4 1.6 1.8 3.8 3.6 4.1 AOR09034 3 2.8 1.8 1.5 4.0 4.0 3.8 ***Internal Defects: HH=hollow heart, BC=brown center, SEB=stem end browning, VD=vascular discoloration, HB=hard bite, IB=impact bruise 45
2014 KBREC Chip Trial Comments Atlantic Chipeta OR09253 1 OR09256 2 AOR00242 2 AOR09032 5 AOR09034 3 Lenticel scaring, rhizoc, folded bud ends, impact bruise Oversize, rhizoc, russeting, low shatter bruise, flat Green, lenticel scaring, black dot, impact bruise, low shatter bruise, fair Russeting, smaller, not bad, low bruise, black dot, dents Smooth, impact bruise, typy, not bad, sticky stolon, pears, black dot Pears, shatter bruise, Fusarium, folded bud ends, smooth, low impact bruise Lenticel scaring, growth cracks, shatter bruise, Fusarium, garbage Atlantic Entries Retained for Further Evaluation in 2015 2014 KBREC Statewide Chip Comment Chipeta 2014 KBREC Statewide Chip Comment Lenticel scaring, rhizoc, folded bud ends, impact bruise, Oversize, rhizoc, russeting, low shatter bruise, flat OR09253 1 OR09256 2 Green, lenticel scaring, black dot, impact bruise, low shatter bruise, fair Russeting, smaller, not bad, low bruise, black dot, dents AOR09034 3 Lenticel scaring, growth cracks, shatter bruise, Fusarium, garbage 46
2014 Regional Chip Trial Location: OSU KBREC Klamath Falls, OR Planting Date: May 15 Vine Kill Date: September 2 Harvest Date: September 23 Days to Vine kill: 111 Fertility: 180 80 200 215 In Row Spacing: 9.25 inch Chipping potatoes comprise a significant portion of Klamath Basin acreage and identification of public varieties suitable for export remains a high priority for Basin producers. Trials were initiated in 2008 and 2009 with funding from the Oregon Potato Commission to identify acceptable chipping varieties for export markets using advanced selections and recently released varieties from the Tri State, Southwest, North central, and Eastern breeding programs and have continued annually. In 2014 seven varieties and advanced chipping selections were evaluated for yield, grade, processing quality, and storability to determine their suitability to meet existing export demands for raw product. All field data was collected at the KBREC site. Tubers from each replication were placed in both short and long term commercial storage with processing evaluations conducted by Baley Trotman Farms. Stand Counts 30 Day Slow emergence: AC05153 1W (89%) 45 Day All entries had greater than 95% final emergence. Plant and Tuber Growth and Development Average Tuber Number Per Plant Most: AC03433 1W (9), AC03452 2W (8) Least: Chipeta (6) Average Tuber Size (oz.) Largest: Chipeta (8.0), AC05153 1W (7.5) Smallest: AC03452 2W (4.6), AC00206 2W (5.0) Undersized Tubers (<4 oz.) cwt/acre Most: AC03452 2W (74), AC03433 1W (54) Least: Chipeta (22), AC05153 1W (32) Yield Data Total Yield (cwt/acre) Highest: AC03433 1W (694), AC05153 1W (622) Lowest: AC00206 2W (403), AC03452 2W (415) Marketable Yield >4 oz. (cwt/acre) Highest: AC03433 1W (321), AC05153 1W (318) Lowest: Chipeta (193), AC00206 2W (196) 47
% Marketable Yield >4 oz. Highest: A02138 2 and AC00206 2W (83%) Lowest: Chipeta (57%) Tuber Defect Incidence (40 tuber sample) Internal Defects Impact Bruise: A02138 2 (7%) Stem End Browning: AC05153 1W (12%), AC03433 1W (10%) Total Yield > 4 oz. < 4 oz. Culls (cwt/a) STATS** % of Total Yield* Oversize > 14 oz. Skin color rating (1 5 dark) Atlantic 534 A 73 9 8 10 2.3 Chipeta 505 A 58 4 9 29 2.0 A02138 2 461 B 83 11 3 2 1.9 AC00206 2W 435 B 83 13 3 1 1.3 AC03433 1W 694 A 75 8 5 12 2.1 AC03452 2W 415 B 76 18 2 3 1.0 AC05153 1W 623 B 80 5 2 13 1.6 LSD (0.05) 19 Yield US # 1 (>4 oz.) External Defects (1 5 none) (cwt/a) STATS** 4 6 oz. Atlantic 391 BC 18 54 28 2.4 4.4 5.0 3.4 Chipeta 290 A 13 54 33 3.1 4.0 5.0 3.5 A02138 2 384 C 23 59 18 4.4 4.5 4.8 3.8 AC00206 2W 359 C 30 59 11 4.0 4.8 4.9 3.0 AC03433 1W 521 B 15 52 33 3.6 4.6 5.0 4.1 AC03452 2W 316 C 32 52 16 4.3 4.9 5.0 2.6 AC05153 1W 498 B 14 50 36 3.9 4.8 5.0 4.1 LSD (0.05) 62 *Percent values may not total 100% due to rounding **Entries showing the same letter are not significantly different at the 5% level %* 6 10 oz. 10 14 oz. Green Growth crack Knobs Shatter 48
Stand % Average Tuber Wt. (oz.) Number tubers/plant Specific Gravity Internal Defects (%)*** HH BC SEB VD HB IB Atlantic 100 6.1 7 1.088 5 0 0 0 5 5 Chipeta 99 8.1 5 1.085 0 3 3 0 3 0 A02138 2 100 5.5 7 1.091 0 0 3 0 5 8 AC00206 2W 98 5.1 7 1.082 0 3 3 0 0 0 AC03433 1W 98 6.5 9 1.081 0 0 10 0 0 3 AC03452 2W 98 4.6 8 1.079 3 0 3 0 0 0 AC05153 1W 95 7.5 7 1.088 0 3 13 0 3 5 Rhizoc (1 5 best) Russeting (1 5 hvy) Shape (1 5 long) Size uniformity (1 5 best) Shape uniformity (1 5 best) Eye Depth (1 5 shal.) Atlantic 3.0 2.6 1.9 3.9 3.9 2.4 Chipeta 3.0 1.5 2.3 2.9 3.4 3.3 A02138 2 4.0 3.1 2.9 3.9 3.5 4.4 AC00206 2W 4.6 1.9 1.4 4.1 4.4 4.1 AC03433 1W 4.5 1.5 2.0 4.0 3.3 3.6 AC03452 2W 5.0 1.4 1.6 4.0 4.0 4.3 AC05153 1W 3.6 2.1 2.1 3.9 4.3 3.9 *Percent values may not total 100% due to rounding **Entries showing the same letter are not significantly different at the 5% level ***Internal Defects: HH=hollow heart, BC=brown center, SEB=stem end browning, VD=vascular discoloration, HB=hard bite, IB=impact bruise 49
Atlantic 2014 KBREC Statewide Chip Comment Chipeta 2014 KBREC Statewide Chip Comment Green, russeting, flat, bruised Lumpy, oversized, folded bud ends, black dot, shatter bruised A02138 2 AC00206 2W Dented, pears, oblong, impact bruise, misshaped russeting Typy, no skinning, smooth, smaller, minimal bruising AC03433 1W AC03452 2W Dented, lumpy, folded bud end, pointy stem end Lenticel scaring, dented, smooth, fair, shatter bruised AC05153 1W Fusarium dry rot, some black dot, russeting, sticky stolon 50