Dr. Donald Halseth, Coordinator

Department of Horticulture Cornell University

Ithaca, New York 14853

_________________________________________________

2005 USPB/SFA Chip Variety Trials

Sponsored by The United States Potato Board

& The Snack Food Association

____________________________________________________

Cooperators: Dr. Chad Hutchinson, University of Florida, Hastings, FL Dr. William Lamont, Pennsylvania State University, University Park, PA Mr. Chris Long, Michigan State University, East Lansing, MI Dr. Ed Plissey, Bio-Ag Research Associates Inc., Machiasport, MA Mr. Duane Preston, Area Potato Extension Office, East Grand Forks, MN Dr. Jeff Stark, Aberdeen Research & Extension Center, Aberdeen, ID Dr. Craig Yencho, North Carolina State University, Raleigh, NC

TABLE OF CONTENTS

Page Introduction …………………………………………………………...................... 3 Table 1. Seed Acreage of Current Chipping Varieties …………………………. 3 Procedure …………………………………………………………………………… 4 Overview ……………………………………………………………………………. 4 Table 2. Characteristics of the 2005 USPB/SFA Chip Trial Entries …………… 5 Regional Trial Reports Florida ……………………………………………………………………….. 7 Idaho ……………………………………………………………………….... 11 Maine …………………………………………………………………………14 Michigan ……………………………………………………………………. 17 North Carolina …………………………………………………………….. 23 Pennsylvania ………………………………………………………………… 28 Red River Valley ……………………………………………………………. 31 Table 3. Summary of performance of eight lines in 2005 trials ………………… 36 Table 4. Three-year averages for Dakota Diamond (2003-2005) …………….….. 39 Table 5. Three-year averages for Megachip (2003-2005) …………………….….. 40 Out-of-Storage Evaluations Idaho ………………………………………………………………………… 41 Maine ………………………………………………………………………… 41 Michigan ……………………………………………………………………... 42 Pennsylvania ……………………………………………………………..….. 44 Red River Valley …………………………………………………………..… 45 Table 6. Chip trial entry summary (1985-2005) …………………………………. 46

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2005 USPB/SFA Potato Chip Trial Results

Dr. Donald Halseth - Coordinator Cornell University, Ithaca, NY

INTRODUCTION The search for new and improved potato varieties is an ongoing and challenging task. During 2002 the United State Potato Board joined with the Snack Food Association in sponsorship of these chip variety trials, which were initiated by the SFA in 1985. The seven trial locations in 2005 were Florida, Idaho, Maine, Michigan, North Carolina, Pennsylvania and the Red River Valley. This report is divided into two sections. The first section presents the variety data for the 2005 growing and harvest season at each of seven trial locations. The second section consists of the data obtained from storage samples collected during the harvest of the 2004 trials and were held in storage into 2005 for out-of-storage information. The USPB-SFA Potato Technology Committee has thoroughly discussed the need and value of storage data and this report represents the third annual report to include this data.

TRENDS IN THE SEED ACREAGE OF CURRENT CHIPPING VARIETIES

Acreage of seed in 2005 of several newly released varieties which have been or are in current USPB-SFA trials include: Harley Blackwell (160 acres); Dakota Crisp (102 acres), Megachip (50 acres); White Pearl (11 acres) and Dakota Diamond (6 acres). Acreage data obtained from the PAA seed certification section.

Variety

Year Released 2000 2001 2002 2003

2004 2005

1. Atlantic 1976 5,481 5,075 4,645 4,351 3,635 2,592 2. Snowden 1990 3,149 2,485 2,758 2,597 1,627 1,664 3. Dakota Pearl 1999 67 88 248 1,749 1,868 1,348 4. Pike 1995 1,433 1,455 1,304 1,291 883 878 5. Reba 1992 828 755 908 981 898 808 6. NorValley 1996 1,597 2,244 1,946 1,344 475 455 7. Andover 1995 474 419 418 392 393 399 8. Monona 1964 607 307 509 495 586 333 9. Marcy 2003 n/a n/a n/a 94 187 26210. Chipeta 1993 721 742 401 550 356 26011. Ivory Crisp 2001 n/a 92 208 214 187 20712. Kanona 1988 450 180 232 219 160 9413. Norchip 1968 251 206 116 73 52 50

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PROCEDURE Trial entries are selected from candidates suggested by University and USDA potato breeders who have been very cooperative in this project. The eight advanced breeding lines and newly released varieties evaluated in 2005 were A91814-5, AF2211-9, Dakota Diamond (ND5822C-7), Megachip (W1201), MSJ316-A, MSJ461-1, NY132, and W2133-1 (see Table 2 for descriptions), and were compared with the chip industry standards Atlantic and Snowden. Trial coordinators established trials in seven states with grower or research farm plots where entries were grown using standard cultural practices. Observation on emergence, growth characteristics and maturity are made during the growing season. Yield, tuber size distribution, external and internal defects, and specific gravity were evaluated at harvest. Storage samples were held in grower storages and university facilities and chip processors participated in chipping evaluations from various temperature and storage durations. OVERVIEW

It is important to look at the performance of the individual entries at each location because of the variations in soil types, weather, growing conditions and crop management. Pages 7-35 show the yield, percent size distribution, and specific gravity data obtained at each of the seven regional locations. Table 3 (pages 36-38) summarizes the overall average yield, percent size distribution and specific gravity for each of 8 clones averages over the seven regional trial sites. There were two recently named breeding lines, Dakota Diamond (ND5822C-7) and Megachip (W1201), which completed three years of trialing from 2003 through 2005. These data are presented in Tables 4 (page 39) and 5 (page 40), respectively. This data provided the three-year average for each regional location and reflects the variable performance among eight locations (2005 trial sites plus California).

DAKOTA DIAMOND (ND5822C-7) was named by the North Dakota State University potato breeding program and was selected in a cross between ND4103-2 and Dakota Pearl in 1994. This variety has very high yield potential, averaging 368 cwt/acre No.1 yield over 20 trial sites in 8 states (see Table 4). Dakota Diamond performed exceptionally well in the Michigan and Idaho trials, averaging 620 and 522 cwt/acre of No. 1 yield, respectively. It had a very low percentage of defects as its No.1 yield averaged 95% of total yield. Dakota Diamond has high specific gravity, averaging 4 units above both Atlantic and Snowden in these regional trials. MEGACHIP (W1201) was named by the University of Wisconsin potato breeding program and was selected from a cross between Wischip and FYF85 in 1985. This variety had good yield, averaging 316 cwt/acre of No.1 yield over 20 trial sites in 8 states (see Table 5). Megachip performed best in California, Idaho and Michigan, averaging 489, 424 and 426 cwt/acre of No.1 yield, respectively. It averaged an 85% No.1 yield, with 6% undersize and 7% culls. Megachip had very high specific gravity, averaging 5 units above Atlantic and Snowden.

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Table 2. Characteristics of the 2005 USPB/SFA Chip Trials Entries

Advanced Seedlings

Characteristics

Seed Provided By

A91814-5

A selection from a 1991 cross between NDA2031-2 and Ivory Crisp. It has mid-season maturity, high specific gravity, high yield and few internal defects. Scab susceptibility similar to Atlantic and a smaller tuber size. Had its highest yield in 2005 USPB-SFA trials in Idaho and best field chip color in Maine.

Dr. Rich Novy USDA-Aberdeen Aberdeen, ID

AF2211-9 A selection from a cross between Atlantic x MaineChip in 1996. It has late maturity, high specific gravity (2 points below Atlantic), and medium-low yield (averaging 80% of Atlantic) in 2005 trials (best yield in North Carolina). Resistant to net necrosis, but moderately susceptible to verticillium wilt and scab.

Dr. Zenaida Ganga University of Maine Presque Isle, ME

MSJ316-A A selection from a cross between Pike and B0718-3 in 1997. Late maturity, moderate specific gravity, a round tuber shape and high yield potential. Scab tolerance and good uniform tuber type. Had its highest No.1 yield in Michigan trial and high specific gravity and good chip color in the RRV trial.

Dr. Dave Douches Michigan State Univ. East Lansing, MI

MSJ461-1 A selection from a 1997 cross between Tollocan x NY88. It has late maturity, lower specific gravity (8 points below Atlantic), and good yield potential (averaging 94% of Atlantic) with highest yields in Michigan and Idaho. Good chip color, tubers attractive enough for tablestock, foliar late blight resistance but scab susceptible.

Dr. Dave Douches Michigan State Univ. East Lansing, MI

ND5822C-7 “DAKOTA DIAMOND”

A selection from a 1994 cross between ND4103-2 x Dakota Pearl. Maturity is late to very late Specific gravity is good (averaged one point above Atlantic), and a very high yield potential (132% of Atlantic). Bright skin, uniform size and shape, and chips from 42F storage. Susceptibility to hollow heart, particularly in large potatoes.

Dr. Susie Thompson North Dakota State Univ. Fargo, ND

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Table 2. Characteristics of the 2005 USPB/SFA Chip Trials Entries (Continued) NY132 A selection from a 1995 cross between Eva x

Pike. Maturity is late, high specific gravity (equal to Atlantic), and medium yield potential (94% of Atlantic). Attractive tubers, bright skin, very good scab resistance and very good chip color. Occasional levels of internal necrosis, blackspot and hollow heart, but less than Atlantic.

Dr. Walter De Jong Cornell University Ithaca, NY

W1201 “MEGACHIP”

A selection from a cross in 1985 between Wischip x FYF85. It has late maturity, had the highest specific gravity (averaged 2 points above Atlantic), a medium-to-high yield (equaled Atlantic) and had the highest percent of No.1 yield. Early tuber bulking rate of well-sized tubers. Good resistance to early blight and some scab resistance but may have some pressure bruise susceptibility. Good chip color.

Dr. Jiwan Palta, Felix Navarro and Bryan Bowen University of Wisconsin Rhinelander, WI

W2133-1 A selection from a cross between Snowden and Rhl167. Late maturity, slightly lower specific gravity (averaged 3 units below Atlantic), round tuber shape and moderately high yield (95% of Atlantic) in the 2005 trials. Chips direct from 42F storage trials at 7 months.

Dr. Jiwan Palta, Felix Navarro and Bryan Bowen University of Wisconsin Rhinelander, WI

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FLORIDA REGIONAL TRIAL Local Coordinators: Cooperating Grower: Cooperating Chip Processor: Dr. Chad Hutchinson University of Florida Utz Quality Foods University of Florida/IFAS Plant Science Research and Education Hanover, PA Horticultural Sciences Dept. Unit at Hastings, FL PO Box 728 Hastings, FL 32145-0728 Mr. Doug Gergela University of Florida/IFAS Horticultural Sciences Dept. PO Box 728 Hastings, FL 32145-0728 Trial Data: Planting Site: University of Florida, PSREU Hastings Farm Planting Date: January 27, 2005 Harvest Date: May 23, 2005 (116 days) Growing Conditions: Weather conditions were reasonably good during the 2005 potato season.

January and most of February were fairly dry, however late February and March was wetter than normal in Northeast Florida, which made it a challenge to complete fertilizer sidedressing and hilling. April and May also saw more than normal precipitation. June was dryer than normal. Only three mornings saw temperature readings at or below freezing. Until the middle of May, when daytime temperatures started to become too hot, overall warm daytime and cool nighttime temperatures were conducive to good plant and tuber growth.

Experimental Design: Each variety/clone was planted in a single 250 ft row as directed by the USPB-SFA

protocol. Four 20 ft sections of each row were harvested and graded. This was not a randomized and replicated experiment. Only means were calculated.

Row Spacing: Machine planted. Approx. 8 inches in-row, 40 inches between-rows. Fertilizer: Preplant:100-43-86/A; sidedress: 2 applications of 50-0-43/A (lb N-P-K/A) Pest Control: Telone II, 6 gpa, pre-plant Temik 15G, 20 lb/A, at planting Sencor DF,10 oz/A and Dual II Magnum,16 fl oz/A at hilling Fungicides and Insecticides as needed. IPM program. Chip Ratings: Unfortunately, the Agtron machine for rating potato chip color was broken and

not available for use when the samples were sent to the factory after harvest for processing. Only visible defects are noted.

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Table 1. Florida Trials 2005: Production statistics for USPB-SFA clones.

Tuber Yield Size Class Distribution3, 4 (%) Size Class Range (%)

No.11 Total % % Specific Clone cwt/A cwt/A No.12 Culls 1 2 3 4 5 2 to 4 3 to 4 Gravity

Atlantic 307 354 87 5 8 66 25 1 0 92 26 1.087 Snowden 193 268 72 2 24 68 5 0 0 73 5 1.079 A91814-5 315 405 78 5 18 75 6 0 0 81 0 1.086 AF2211-9 285 335 85 7 7 59 31 2 0 92 33 1.085 MSJ316-A 334 429 78 3 19 75 4 1 0 80 5 1.086 MSJ461-1 154 299 52 2 44 50 2 0 0 52 2 1.070 ND5822C-7 319 396 81 1 18 77 4 0 0 81 4 1.086 NY132 287 349 82 1 15 75 8 0 0 83 8 1.091 W1201 302 348 87 5 8 65 26 1 0 92 27 1.090 W2133-1 255 298 86 2 12 69 17 1 0 87 18 1.081 Average 275 348 1.084

1No.1 Yield: marketable yield, size classes 2 to 4 2Percent No. 1: calculated based on weight using the formula, No. 1 Wt / Total Yield Wt 3Size Class Distribution: calculated based on weight using the formula, Class Wt / (Total Yield Wt – Cull Wt). 4Size Classes: 1 = 1.5 to 1 7/8", 2 = 1 7/8 to 2.5", 3 = 2.5 to 3.25", 4 = 3.25 to 4", 5 = > 4"; Class size C (<1.5”) was recorded and is included in Total Yield but is not shown as a separate size category.

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Table 2. Florida Trials 2005: Plant growth and tuber characteristics for USPB-SFA clones.

Plant Growth Characteristics1 Tuber Characteristics2 Percent Early Vine Vine Chip

Clone Stand Vigor Type Maturity IFC SC ST TS ED APP Rating3

Atlantic 73 7.0 9 4 2.0 6.0 5.0 2.5 5.5 6.0 na Snowden 79 6.5 8 4 1.5 5.5 5.0 2.0 5.0 5.5 na A91814-5 70 5.5 6-9 5 1.5 8.0 7.5 3.5 6.0 6.0 na AF2211-9 84 6.8 9-6 4 1.5 7.5 6.5 2.5 5.5 6.5 na MSJ316-A 86 6.0 9-6 4 1.5 7.5 6.0 3.5 5.0 6.0 na MSJ461-1 87 7.0 5-8 2 1.5 7.5 5.0 2.5 4.5 6.0 na ND5822C-7 90 6.8 9-6 2 1.5 7.5 5.5 2.0 5.5 6.0 na NY132 76 5.5 9-6 4 2.0 7.0 6.0 4.0 5.5 4.5 na W1201 69 5.5 9-6 4 1.0 6.5 5.5 3.0 4.5 6.0 na W2133-1 51 60 9 3 1.5 6.0 5.0 2.5 5.0 6.0 na

1Plant Growth Characteristics. Percent Stand: based on 8 inch in-row spacing, 20 ft plot. Early Vigor: 1 = no emergence, 2 = leaves in rosette, 3 = plants < 2 in., 4 = plants 2 to 4 in., 5 = plants 4 to 6 in., 6 = plants 6 to 8 in., 7 = plants 8 to 10 in., 8 = plants 10 to 12 in., 9 = plants > 12 inches.

Vine Type: 1 = decumbent - poor canopy, 2 = decumbent - fair canopy, 3 = decumbent - good canopy, 4 = spreading - poor canopy, 5 = spreading - fair canopy, 6 = spreading - good canopy, 7 = upright - poor canopy, 8 = upright - fair canopy, 9 = upright - good canopy. Vine Maturity: 1 = completely dead, 3 = yellow and dying, 5 = moderately senesced, 7 = starting to senesce, 9 = green and vigorous. 2Tuber Characteristics. Internal Flesh Color (IFC): 1 = white, 2 = cream, 3 = light yellow, 4 = medium yellow, 5 = dark yellow, 6 = pink, 7 = red, 8 =blue, 9 = purple.

Skin Color (SC): 1 = purple, 2 = red, 3 = pink, 4 = dark brown, 5 = brown, 6 = tan, 7 =buff, 8 = white, 9 = cream.

Skin Texture (ST): 1 = partially russet, 2 = heavy russet, 3 = moderate russet, 4 = light russet, 5 = netted, 6 = slightly netted, 7 = moderately smooth, 8 = smooth, 9 = very smooth.

Eye Depth (ED): 1 = very deep, 3 = deep, 5 = intermediate,7 = shallow, 9 = very shallow

Overall Appearance (APP): 1 = very poor, 3 = poor, 5 = fair, 7 = good, 9 = excellent.

3Chip Rating: Ratings not available. Agtron machine not working at processing plant.

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Table 3. Florida Trials 2005: External and internal defects for USPB-SFA clones.

% External Tuber Defects 1 % Internal Tuber Defects2

Growth Mis- Sun- Rotten Total Clone Cracks shapen burned & misc. Culls HH BR CRS IHN

Atlantic 1 1 2 0 5 0 0 0 0 Snowden 0 1 1 0 2 0 0 0 0 A91814-5 0 2 1 1 5 0 0 0 0 AF2211-9 1 1 4 1 7 0 0 0 1 MSJ316-A 0 1 1 1 3 1 0 0 26 MSJ461-1 0 1 0 0 2 0 0 0 0 ND5822C-7 0 0 0 1 1 0 0 0 0 NY132 0 1 0 0 1 0 0 0 0 W1201 0 2 2 1 5 0 0 0 0 W2133-1 0 0 1 1 2 0 0 0 0

1External Tuber Defects: Total Culls is sum of growth cracks, misshapen, sunburned and rotten/misc. 2Percent Internal Tuber Defects: percent of tubers showing defects; HH = hollow heart, BR = brown rot, CRS = corky ringspot, IHN = internal heat necrosis.

Local Coordinator: Cooperating Grower: Cooperating Chip Jeffrey Stark Processor:Peggy Bain Aberdeen R&E Center R&G Potatoes

Melvin Chappell Aberdeen, Idaho American Falls, IdahoUniversity of Idaho

Trial DataPLANTED 28-Apr-05VINE KILLED 6-Sep-05

HARVESTED 29-Sep-05

PLOT LENGTH 20’ HARVEST LENGTH 20'HILL SPACING 10” ROW SPACING 36”HILLS PER PLOT 24 ROWS/ PLOT 1REPS 4

METHOD OF HARVEST Grimme Machine IRRIGATION Sprinkler16 irrigations applied 20.68 "

FERTILIZER120 N - 100 P - 100 K– pre-plant (26 April, 2005)30 Units N applied with water on July 1,6,15

INSECTICIDES APPLIED/HILLINGAdmire 2F (17 oz/A) - Shanked June 1

FUNGICIDES APPLIEDJuly 12 & 25 Curzate 3.2 oz/acre & Dithane 2 lbs/acre applied with water

HERBICIDES APPLIEDSencor DF 75% (0.33 lb/A), Matrix (1.25 oz/A), Eptam (6pints/A) - Spray Coupe- June 3Also 1 quart Adwet/100 gallons water - Incorporated with 0.5" water

ENVIRONMENTAL FACTORSBelow Freezing Temps: June 8, 30F; June 9, 27F; and June 10, 30FApril rain fall 2.10 inches, May rain fall 2.75 inches; Total April & May 4.85 "

PROBLEMS ENCOUNTEREDHand weeded field, because weeds were not suppressed from herbicide.

Idaho Regional Trial

(Reglone @ 2 pts/A)

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Table 1. IDAHO TRIAL 2005, Yield, Size Distribution, Specific Gravity

% Specific Clone US No1 Total <1 7/8 " 17/8-2.5" 2.5-4" >4" Unusable GravityND5822C-7 552 657 14 26 53 6 2 1.090A91814-5 388 531 23 26 42 5 4 1.099W1201 423 486 7 16 52 19 6 1.101W2133-1 339 486 29 31 35 3 1 1.090MSJ461-1 354 482 23 28 40 6 3 1.090MSJ316-A 349 470 25 32 41 1 1 1.097SNOWDEN 319 439 27 34 36 2 0 1.089NY132 352 431 17 26 49 7 2 1.099ATLANTIC 259 329 18 19 47 13 4 1.097AF2211-9 222 288 20 35 40 2 3 1.092

Mean 356 460 20 27 44 6 3 1.094LSD (.05) 82 82 0.005LSD (.01) 110 111 0.007

Table 2. IDAHO TRIAL 2005, Vine and tuber characteristics.Fresh

Vine Vine Stems/ Merit Tuber TuberClone Size 1 Maturity2 Plant Score 3 Color4 Shape5

ND5822C-7 2.8 2.8 2.1 4.0 1.5 1.8A91814-5 3.8 2.5 4.1 2.5 1.0 3.5W1201 3.3 2.0 2.5 2.5 1.8 2.5W2133-1 2.8 2.0 3.1 3.7 2.3 1.0MSJ461-1 3.3 3.3 3.3 3.8 2.0 1.3MSJ316-A 3.5 3.3 2.5 3.8 1.3 1.3SNOWDEN 2.8 2.0 3.5 3.0 2.5 1.0NY132 2.0 2.0 2.1 3.8 2.5 2.3ATLANTIC 1.3 1.5 2.5 2.3 2.8 1.8AF2211-9 1.3 1.5 2.2 3.5 2.0 1.3

Mean 2.7 2.3 2.8 3.3 2.0 1.8

1 (1-5) 5=Large2 (1-5) 5=Late3 (1-5) 5=Best Preference Score4 (1-5) 1=White5 (1-5) 1=Round

Yield (cwt/A) Percent Size Distribution

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Table 3. IDAHO TRIAL 2005, External and Internal Defects.

Growth % % % %Clone Scab Cracks Knobs Blackspot 5 HH BC IBS VD

ND5822C-7 4.3 4.8 5.0 3.3 20 5 0 0A91814-5 3.0 4.0 4.5 3.2 0 0 0 0W1201 4.0 4.5 4.3 2.5 3 0 3 0W2133-1 3.5 5.0 4.8 3.3 5 0 0 0MSJ461-1 3.0 4.5 5.0 2.9 0 0 0 0MSJ316-A 4.5 5.0 5.0 1.6 0 0 0 0SNOWDEN 2.7 5.0 5.0 3.2 5 0 3 3NY132 3.5 5.0 5.0 3.5 58 0 0 0ATLANTIC 2.5 4.5 4.5 2.5 33 0 3 3AF2211-9 4.0 5.0 5.0 2.9 10 0 0 0

Mean 3.7 4.8 4.9 2.9 2.0 1.0 2.0 3.04 (1-5) 5=None5 (1-5) 5=severe. Tubers peeled in abrasive peeler.6 Percent of defects on 10 large tubersHH=hollow heart, BC=brown center, IBS=internal brown spot, VD=vascular discoloration

Table 4. IDAHO TRIAL 2005, After Harvest Quality Report.

Chip7 Undesirable Internal Exterior Total Clone Field Fry color defects Green defects defects

ND5822C-7 1.3 8 0 0 20 30A91814-5 1.5 non uniform shape 0 4 0 25 29W1201 1.3 lg tuber, deep buds 4 6 4 27 41W2133-1 1.2 4 4 0 30 38MSJ461-1 1.5 some growth cracks 0 6 2 22 30MSJ316-A 1.2 0 10 0 32 42SNOWDEN 1.5 0 2 0 7 9NY132 1.3 0 19 0 39 58ATLANTIC 2.2 hollow heart, scab 0 19 0 22 41AF2211-9 1.5 0 15 0 34 49

7 SFA Color (1-5) 1=lightest8 (0-15) 15=Frito Lay rejection std. Samples rated 2 weeks post harvest samples may have been in sweat and

External defects4 Internal Defects6

R&G Potato Company Ratings8

few tubers

nice

small tubers

stolons adheringsmall tubershollow heart

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Maine Regional Trial

Cooperators: Local Coordinator: Cooperating Grower: Coop. Chip Processor: Ed Plissey, Research Director John Dorman Dennis Derey, Op. Mgr. Bio-Ag Research Double D Farms Frito-Lay, Inc. 601 Yoho Head Road 2312 Exeter Road 1886 Upper Maple St. Machiasport, ME 04655 Exeter, ME 04435 Dayville, CT. 06241 207-255-6166 207-379-2081 860-779-0200-ext. 2304 bioag97@aol.com Deary.Dennis@fritolay.com 2005 Variety entries: 1. Atlantic (field std.) Arthur Shur, S&R Corp., Island Falls, ME 2. Snowden (storage Std.) Arthur Shur, S&R Corp, Island Falls, ME 3. AF2211-9 Dr. Zenida Ganga, U of Maine, Presque Isle 4. A91814-5* Dr. Rich Novy, USDA-ARS, Aberdeen, ID 5. MSJ316-A* Dr. Dave Douches, Michigan State, E. Lansing, MI 6. MSJ461-1 Dr. Dave Douches, Michigan State, E. Lansing, MI 7. NY132 Dr. Walter De Jong, Cornell Univ., Ithaca, NY 8. ND5822C-7 Dr. Susie Thompson, NDSU, Fargo, ND 9. W1201 Dr. Horia Groza, Ag. Research Station, Rhinelander, WI 10. W2133-1* Dr. Horia Groza, Ag. Research Station, Rhinelander, WI *= New entries, 2005 Trial Data: Previous Crop: Barley, Under seeded – Annual Rye Trial Location Dorman Home Farm, Exeter, Maine Soil: Bangor silty loam series

Fertilization: 140-14-200

Planter and Spacing: Harriston pick type @ 9 inch spacing Plot Size: 1 – 36” Row by 250 ft.

Tillage & Pest Management: Traditional commercial chip production

Planting Date: June 1, 2005 Date Vine Kill: September 12, 2005

Date Harvested: October 13, 2005 Date Field Processed: October 16, 200

15

PROCEDURE Seed sample shipments were received by the Crane Brothers Farm in Exeter, Maine and held in seed storage until all samples had arrived and conditioned for cutting. Seed lots were hand cut and transported to Dorman Farms for planting. The seed lots were planted with a six-row Harriston pick-type planter on the Home Farm along HY 11 and 100. Excessive rainfall in the area delayed planting until June 1st. (3 weeks later than normal) The trial site received adequate rainfall during June and July but became droughty by mid-August. The trial site received standard cultural treatments and pest management applications throughout the growing season. No significant weed or foliar fungal pathogens were noted during the growing season. Some second generation Colorado Potato Beetle feeding pressure was note in the Atlantic and W1773-7 selection in late August however treatment thresholds did not appear to be exceeded. Extended rainfall periods in September and early October delayed harvesting until October 13, 2005, however, no frost events had occurred prior to that date and soil temperatures were in the mid fifty degree level at harvest. A 50-pound tuber sample was delivered to the Frito-Lay Potato Chip plant at Dayville, CT for commercial fry processing. Replicated yield samples were gathered and transported to the Bio-Ag Research for grading, sizing and yield analysis. Winter processing samples were transferred to Dr. Zenida Ganga at the University of Maine Aroostook Research farm potato breeding project for winter storage and chip fry color evaluation A 20 – 25 pound sample was stored in the Dorman Farms storage for late season removal and fry color evaluation.

RESULTS The Atlantic and FL-X grower standard were the high producers in the 2005 SFA trial in Maine. The combination of delayed planting due to heavy rainfall throughout May resulted in a much shortened growing season. All cultivars produced much lower solids and specific gravity levels indicating physiological maturity has not been reached before vines had to be desiccated to facilitate harvest. A droughty August also tended to limit yields on those cultivars that require more uniform soil moisture to achieve maximum yield potential. Culls tubers were primarily sunburn and an occasional pitted scab. MSJ461 produced a lower percentage of marketable tubers than other cultivars with 40 percent of production below 2 inches in diameter. Field samples were transferred to the Frit-Lay, Inc. plant in Dayville, CT and were processed two days following harvest. Field delivery chip fry Agtron Color scores were exceptional for all cultivars. The cultivar NY132 is very susceptible to shatter bruise and had the highest defect score at the processing plant. AF2211-9 continues to produce acceptable yields and solids and scores well in processing recovery. Long-term storage samples were placed in commercial storage at Dorman Farms and at the University of Maine Potato Breeding Project at Aroostook Farm with Dr. Zenida Ganga and results will be reported at a later date. The cooperation of John Dorman at Double D. Farms in Exeter, Maine, and Dennis Derey, Operations Manager at the Frito-Lay plant in Dayville, CT is sincerely appreciated. Dorman Farms have been the host of the Maine SFA trial for 20 consecutive years as has the participation of Dennis Derey at Frito-Lay.

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.4

0

7

ND

5822

C-7

2

21.3

23

3.8

9

4.6

2.1

3.3

1

0.7

77

.0

7.

0

1.0

74

6

9.5

-1.0

7

1

8.3

6

0

N

Y13

2

207

.5

220.

0

94.

3

0

5

.7

12.

5

76.1

5.7

1

.063

69.

7

-2

.21

16.

1 6

10*

W12

01

201

.9

204.

4

98.

8

0

0.2

5 1

0.4

84

.4

4.

0

1.0

72

68.0

-1.0

1

1

7.9

1

2

A

9181

4-5

200

.0

217.

5

92.

0

1.

7 6

.3

13.

8

78.2

0

1

.076

70

.5

-1

.1

18.

7 1

5

SNO

WD

EN

1

96.3

21

1.3

9

3.0

1.8

5.4

1

8.9

73

.9

0

1.0

66

69.5

-2.5

2

1

6.7

0

5

*

= Sh

atte

r Bru

ise

Spe

cific

gra

vity

mea

sure

d by

SFA

hyd

rom

eter

. 16

17

Michigan Regional Trial

Local Coordinators: Cooperating Grower: Cooperating Chip Processor: Chris Long Greg Perkins Herr Foods, Inc. Dave Douches V & G Farms Nottingham, PA Michigan State University Stanton, MI East Lansing, MI Trial Data: Planting Date: May 25, 2005 Vine Kill Date: Unknown Harvest Date: October 10, 2005 (139 DAP) Row & Plant Spacing: 34″ x 10″; irrigated Plots: Single rows for each entry approximately 300′ long Trial Procedure: Seed was mechanically cut on May 3, 2005 and delivered to the grower’s storage the following day. No seed treatments were applied at the time of seed cutting. The seed of A91814-5 contained, what appeared to be, severe infections of blackleg and dry rot in 50% of the tubers. Consequently, there was limited seed available to plant the plot, but we were able to harvest all three replications in this variety. At harvest, three plot areas of 23 feet were harvested from each entry and were used to determine yields, size distribution, specific gravity and internal defects. A 40 lb. storage sample was collected from each entry and was placed in the grower’s commercial storage for evaluation in spring 2006. Twenty-five tuber samples were also collected at harvest and stored at the Michigan Potato Industry Commission’s Cargill Demonstration Storage Facility at approximately 48ºF and 55ºF for both a February and May evaluation. Two out of the field chip samples were taken for each variety at harvest. One was sent to Herr Foods for processing and the additional sample was processed at Michigan State University. A plant growth and vigor observation was made on June 29th. Dakota Diamond (ND5822C-7) appeared to be the most vigorous vine type followed by Megachip (W1201) and A91814-5. The MSJ316-A appeared to have the slowest rate of vine growth on this date.

18

Growing Season Weather: Weather conditions during the 2005 growing season were warm and dry. September was the wettest month, receiving just 3.9” of rainfall. Total rainfall, April through September, was 15.05” averaging 2.5” per month over this same period. Rainfall for 2005 was under the 15 year average of 20.66” by approximately 5.5”. Daytime temperatures were elevated June through August, with temperatures being 2 to 5 degrees higher than the 15 year average during this period. There were three days in June and one in August where daytime temperatures exceeded 90ºF. Also, nighttime temperatures during the month of June were slightly higher than the 15 year average. One day in June the nighttime temperature reached 72.6ºF. The average nighttime lows for June, July and August were 60ºF, 58ºF and 58ºF, respectively. Results: Table 1 summarizes the yield, size distribution, and specific gravity data at harvest. Dakota Diamond (ND5822C-7) occupies the top yield spot for the third year running. This variety exhibits excellent gravity and a good marketable yield. NY132 and AF2211-9 fell below the yield expectations for this trial at 260 and 184 cwt. respectively. A91814-5, AF2211-9 and MSJ461-1 have specific gravity levels below the industry standard of 1.080. Table 1. Yield ,Size Distribution*, Specific Gravity

SpecificEntry US#1 TOTAL US#1 Small Mid-Size Large Culls Gravity

ND5822C-7 621 648 95 3 72 23 2 1.089MSJ461-1 404 474 85 15 84 1 0 1.073MSJ316-A 380 420 91 7 82 9 2 1.079SNOWDEN 375 403 94 6 89 5 0 1.082Megachip 368 399 92 6 83 9 2 1.083W2133-1 304 336 91 8 83 8 1 1.084A91814-5 301 407 74 21 72 2 5 1.067ATLANTIC 275 318 87 9 85 2 4 1.081NY132 260 300 87 11 81 6 2 1.080AF2211-9 184 226 83 12 75 7 5 1.070

Average 380 413 88 1.079*small <1 7/8"; mid-size 1 7/8"-3 1/4"; large >3 1/4"

Yield (cwt/A) Percent Size Distribution

19

Table 2 summarizes the at-harvest tuber quality. Dakota Diamond had a higher than average incidence of hollow heart with 7 out of 30 cut showing the defect. The hollow heart that appeared in AF2211-9 appeared to be significant given the small yield and size profile of the variety. The following comments regarding scab susceptibility are observations from the field trial during grading. The Dakota Diamond variety had excellent field resistance to common scab. On the contrary, the A91814-5 and the AF2211-9 exhibited the highest level of susceptibility. These varieties contained significant surface and pitted scab. Table 2. At Harvest Tuber Quality. V & G Farms, Michigan.

Scab2

Entry HH VD IBS BC Total Cut ToleranceND5822C-7 7 0 0 0 30 0.5MSJ461-1 1 0 0 0 30 2.0MSJ316-A 2 0 0 0 30 1.5SNOWDEN 2 1 0 0 30 3.5Megachip 4 1 0 0 30 2.0W2133-1 2 0 0 0 30 3.0A91814-5 0 0 0 0 30 3.5ATLANTIC 1 0 0 0 30 3.5NY132 2 0 0 0 30 1.5AF2211-9 5 0 0 0 30 3.5

1Internal Defects. HH = hollow heart, VD = vascular discoloration, IBS = internal brown spot, BC = brown center.2Scab reading October 10, 2005. 0 = no infection, 1 = low infection < 5%, 3 = intermediate, 5 = highly susceptible.

Internal Defects1

20

Table 3 shows the post harvest chip quality based on samples collected at harvest on October 10th and processed at Herr Foods Inc. on October 18th, 9 days after harvest. Chip colors were generally good, with Megachip, ND5822C-7, W2133-1 and MSJ461-1 having the best overall appearance. Some varieties had a significant amount of total chip defects primarily A91814-5, AF2211-7 and MSJ316-A. Table 3. 2005 Post-Harvest Chip Quality1.

Agtron SFA2 Specific Entry Color Color Gravity Internal External Total

ND5822C-7 64.1 2.0 1.085 21 1 22MSJ461-1 61.7 2.0 1.063 19 17 36MSJ316-A 59.5 3.0 1.079 50 2 52SNOWDEN 67.8 2.0 1.075 14 22 36Megachip 61.7 2.0 1.078 32 12 44W2133-1 59.1 2.0 1.076 23 10 33A91814-5 58.2 4.0 1.073 28 37 65ATLANTIC 63.1 3.0 1.075 20 27 47NY132 64.1 3.0 1.075 28 12 40AF2211-9 57.2 4.0 1.066 37 16 53

1 Samples collected at harvest October 10th and processed by Herr Foods Inc., Nottingham, PA on October 18, 2005 (9 days).

Chip defects are included in Agtron and SFA samples.2 SFA Color: 1 = lightest, 5 = darkest 3 Percent Chip Defects are a percentage by weight of the total sample; comprised of undesirable color, greening, internal defects and external defects.

Percent Chip Defects3

21

Table 4 summarizes the results of the samples collected for black spot bruise. Two-25 tuber samples were collected at harvest. One sample served as a check and the second sample was stored for at least 12 hours at 50ºF, then placed in a 6 sided plywood drum and rotated 10 times to produce a simulated bruise. Two to three weeks later, all samples were abrasively peeled and scored for black spot bruise. All entries had a high percentage of bruise free potatoes among the check samples except NY132 and W2133-1. Among the “Simulated Bruise” samples, the best entries were Megachip, MSJ316-A and A91814-5. NY132, Snowden and AF2211-9 showed the lowest percent bruise free. Table 4. Black spot Bruise Test

Percent Average Percent AverageTotal Bruise Bruises Per Total Bruise Bruises Per

Entry 0 1 2 3 4 5 Tubers Free Tuber 0 1 2 3 4 5 Tubers Free TuberND5822C-7 24 1 25 96 0.0 17 5 2 1 25 68 0.5MSJ461-1 25 25 100 0.0 15 9 1 25 60 0.4MSJ316-A 25 25 100 0.0 19 5 1 25 76 0.3SNOWDEN 25 25 100 0.0 10 12 2 1 25 40 0.8Megachip 25 25 100 0.0 19 6 25 76 0.2W2133-1 20 5 25 80 0.2 16 5 2 1 1 25 64 0.7A91814-5 25 25 100 0.0 20 3 1 1 25 80 0.3ATLANTIC 25 25 100 0.0 17 8 25 68 0.3NY132 22 3 25 88 0.1 5 11 1 5 3 25 20 1.6AF2211-9 25 25 100 0.0 12 12 1 25 48 0.6

1Tuber samples collected at harvest and held at room temperature for later abrasive peeling and scoring.2Tuber samples collected at harvest, held at 50ºF for at least 12 hours, then placed in a 6 sided plywood drum and rotated 10 times to produce simulated bruising. They were then held at room temperature for later abrasive peeling and scoring.

A. Check Samples1 B. Simulated Bruise Samples2

Variety Comments: DAKOTA DIAMOND (ND5822C-7): Emergence and plant vigor were noted as above average. This clone has tremendous plant vigor with very large vines. Tuber type was nice, but hollow heart continues to be a factor in the cut oversize tubers. Scab tolerance seems to be strong. Chip color was nice with an Agtron score of 64.1. Concerns still remain in regard to elevated total glycoalkoloides in this variety, as well as masking of PVY symptoms. This variety exhibited a slight susceptibility to black spot bruise. MSJ461-1: This variety exhibited an above average yield of uniform round tubers. Internal defects in the tubers were low. The number of “B” sized tubers was higher than average at 15%. The Agtron score was excellent at 61.7. The recorded specific gravities at harvest and at Herr Foods, Inc. were below the minimum processing stand of 1.080. This variety was one of the least susceptible to black spot bruise in this trial. MSJ316-A: US#1’s yield was above average at 380 cwt/A. Specific gravity was acceptable given the growing season. Internal defects were low and the scab rating was acceptable. The variety emerged slowly after planting and appeared to be later maturing than the other varieties. Chip color was below average, with the highest percent of internal defects overall. The internal defects were the result of poor internal color. Susceptibility to black spot was slight.

22

SNOWDEN: An above average yield at 375 cwt/A and an average specific gravity of 1.082. Snowden posted the highest Agtron score of 67.8 with a lower percent of total defects on average than many of the other varieties. The percent of bruise free potatoes were below average at 40%. Surface and pitted scab was moderate at harvest. MEGACHIP (W1201): This variety was seen to have good plant vigor on June 29th and produced a strong yield of good size potatoes. A consistent, strong specific gravity continues to be noted in this variety, generally in the 1.083 to 1.089 range. A slight amount of hollow heart was noted in the oversize tubers. Megachip appears to be a later maturing variety that bulks early with some scab tolerance. Chip quality was excellent, with only a trace of black spot bruise this year. W2133-1: The US#1 yield for this variety was average at 304 cwt/A. The specific gravity was above average at 1.084. Internal quality was good, with moderate susceptibility to pitted scab noted. Chip quality was very good overall, placing W2133-1 with the top chip performers in this trial. Susceptibility to black spot was medium. A91814-5: Yield was below average at 301 cwt/A. This variety recorded the highest percent of “small” potatoes at 21% with an unacceptable specific gravity. The tubers appeared to be very susceptible to surface and pitted scab. Chip quality was poor recording the highest level of total chip defects at 65%. Black spot bruise susceptibility was slight. ATLANTIC: Below average yield for this trial with a moderate specific gravity at 1.081. The variety exhibited a high level of susceptibility to common scab. Chip quality was average. NY132: This variety had a marginal yield at 260cwt/A. The specific gravity was acceptable at 1.080. Internal quality was good with moderate scab tolerance. Overall, chip quality was good with an Agtron reading of 64.1 and a moderate total chip defect score of 40%. This variety appeared to be very susceptible to black spot bruise at 1.6 bruises per tuber. AF2211-9: This variety recorded the lowest yield in this year’s trial again with a large percent of “small” size tubers. The specific gravity was unacceptable at 1.070. Five tubers exhibited hollow out of the thirty cut. Given the smaller size profile of this variety this level of hollow heart is significant. This variety also appears to be very susceptible to common scab. The chips recorded a 57.2 Agtron score, the lowest in the trial. Black spot bruise susceptibility was slight to moderate this season.

North Carolina Regional Trial

Local Coordinators: Cooperating Grower: Cooperating Chip Processor: Dr. Craig Yencho Chris Hopkins Utz Quality Foods North Carolina State University Black Gold Farms Hanover, PA 214A Kilgore Hall 2815 N Gum Neck Road Raleigh NC, 27695 Columbia, NC 27925 Mr. Mark Clough North Carolina State University 207 Research Station Rd. Plymouth NC 27962 Trial Data: Planting Site: Black Gold Farms, Gum Neck, Tyrrell County, NC Planting Date: March 10, 2005 Harvest Date: July 7, 2005 (119 days) Growing Conditions: Planting started on time, with rains occurring during the middle and later parts of March after

planting. Because of the timing of rains in late March and early April per-emergence herbicides were sprayed late and sensitivity was noted in several clones (discussed in clone summaries below). Temperatures throughout the majority of the season were favorable for growth. Rains this year came in large doses at a time or none at all, still overall quantities were adequate during the growing season. Early vine decline occurred as a result of severe ozone injury. Rains at harvest delayed digging two weeks resulting in higher than normal levels of soft rot.

Weather Data: Jan Feb Mar Apr May Jun July

Mean Temp 41 40 60 60 63 75 80 Max Temp 70 45 63 84 81 90 90 Min Temp 17 24 26 36 44 55 66 Precip 2.78 0.61 4.12 2.28 6.00 7.66 3.89 30yr Avg 3.95 3.64 4.08 3.43 4.41 4.67 6.39 Precip Dev. -1.17 -3.03 0.04 -1.15 1.59 2.99 -2.50

Soil Type: Perquimans loam Experimental Design: Randomized complete block design with 4 replications. Row Spacing: 28 hills, 9 inches apart, 34” row width. Fertilizer: 149 lbs N, 50 lbs P, 159 lbs K Broadcast 48 lbs N (spray, post-emergence) Weed Control: Roundup Original Max 19.34 fl oz/A (pre-plant) Weedar 16.52 fl oz/A (pre-plant) Dual Magnum 1.42 pts/A Sencor DF .51 lbs/A Matrix .57 oz/A Insect Control: Baythroid 2 oz/A Actara 1.5 oz/A Disease Control: Amistar 9.6 oz/A Manzate 75DF 2lbs/A Curzate 60 DF 3.2 oz/A

23

Tabl

e 1.

Nor

th C

arol

ina:

Tot

al a

nd m

arke

tabl

e yi

eld,

per

cent

age

of to

tal y

ield

by

size

cla

ss, s

peci

fic g

ravi

ty a

nd c

hip

scor

es.

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

___

To

tal Y

ield

M

arke

tabl

e Y

ield

% S

ize

Dis

tribu

tion

by C

lass

1

17 / 8 21 / 2

Spec

ific

Chi

p

Clo

ne

cwt/A

cw

t/A

1 2

3 4

5 C

ulls

to

4"

to 4

" G

ravi

ty2

Col

or3

A91

814-

5

421

264

19

47

16

0 0

17

63

16

1.07

5 2

AF2

211-

9

398

298

11

40

34

1 0

15

75

35

1.08

0 2

AT

LA

NT

IC

416

349

9 41

43

0

0 7

84

43

1.07

9 3

MSJ

316-

A

416

293

18

57

13

0 0

12

71

14

1.06

7 3

MSJ

461-

1

386

259

25

50

17

0 0

8 67

17

1.

067

3 N

D58

22C

-7

486

380

14

45

33

0 0

8 78

33

1.

085

3 N

Y13

2

452

373

9 49

33

1

0 8

82

34

1.08

0 3

SNO

WD

EN

39

7 28

3 22

54

17

0

0 7

71

17

1.07

9 1

W12

01(M

egac

hip)

38

0 28

6 12

44

31

0

0 13

76

31

1.

078

3 W

2133

-1

408

320

14

45

32

1 0

7 78

33

1.

077

2 G

rand

Mea

n 41

6 31

0 C

V(%

) 8

11

LSD

(K=1

00)

53.5

49

.9

1 Siz

e C

lass

es:

1's <

1 7

/8";

2's

1 7/

8 to

2 1

/2";

3's

2 1/

2 to

3 1

/4";

4's

3 1/

4 to

4";

5's ≥

4"; C

ulls

= a

ll de

fect

ive

pota

toes

. 2 S

peci

fic G

ravi

ty

Det

erm

ined

by

wei

ght i

n ai

r/wat

er m

etho

d.

3 Chi

p C

olor

R

atin

gs c

ondu

cted

by

the

NC

SU P

otat

o B

reed

ing

Prog

ram

at t

he T

RS/

VG

JREC

with

in 9

6 hr

s afte

r har

vest

: 1 =

no

defe

cts,

exce

ptio

nally

brig

ht; 2

= e

xcel

lent

, br

ight

; 3 =

goo

d, li

ght o

r gol

den;

4 =

dar

k de

fect

s, m

argi

nal;

5 =

not a

ccep

tabl

e.

24

Tabl

e 2.

Nor

th C

arol

ina:

Pla

nt v

ine

type

, dis

ease

and

air

pollu

tion

scor

es, m

atur

ity a

t ca.

3 w

eeks

prio

r to

harv

est,

and

exte

rnal

an

d in

tern

al tu

ber a

ttrib

utes

. __

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

_

Pla

nt D

ata1

Tube

r Dat

a2

% In

tern

al D

efec

ts3

C

lone

TY

PE D

IS

POLL

MA

T

CLR

TX

T TC

X T

SS

SHP

EYE

SIZE

D

IS

APP

HN

H

NR

H

H V

R

BC

SR

A

9181

4-5

5

8 8

4 9

7 4

5 5

7 5

5 3

5 8.

3 15

0

3 10

A

F221

1-9

9

9 8

5 7

6 7

6 2

7 6

5 5

3 8.

5 8

0 13

8

AT

LA

NT

IC

6 9

8 4

6 5

7 7

2 6

7 7

6 25

7.

0 18

0

15

5 M

SJ31

6-A

5

9 8

6 6

7 5

4 5

8 5

. 4

53

6.8

18

0 15

13

M

SJ46

1-1

6

8 8

6 6

6 5

5 3

7 5

. 5

5 8.

5 0

0 0

0 N

D58

22C

-7

9 9

9 7

9 8

6 5

2 7

6 .

5 3

8.8

15

0 33

8

NY

132

6

9 8

5 6

7 6

7 5

8 7

. 7

0 9

3 0

3 8

SNO

WD

EN

9

9 8

5 5

5 7

6 2

6 5

. 6

3 8.

8 0

0 0

5 W

1201

(Meg

achi

p)

9 9

8 4

6 6

7 6

3 6

6 .

5 0

9 3

0 0

28

W21

33-1

6

9 8

4 5

6 4

5 2

7 6

. 5

0 9

0 0

3 0

1 Pla

nt D

ata:

V

ine

Typ

e: 1

= d

ecum

bent

–po

or c

anop

y, 2

= d

ecum

bent

– fa

ir ca

nopy

, 3 =

dec

umbe

nt –

goo

d ca

nopy

, 4 =

spre

adin

g –

poor

can

opy,

5 =

spre

adin

g –

fair

cano

py,

6 =

spre

adin

g - g

ood

cano

py, 7

= u

prig

ht –

poo

r can

opy,

8 =

upr

ight

– fa

ir ca

nopy

, 9 =

upr

ight

goo

d ca

nopy

. V

ine

Dis

ease

: 1 =

ver

y se

vere

, 5 =

mod

erat

e, 9

= n

one.

V

ine

Pollu

tion:

1 =

ver

y se

vere

, 5 =

mod

erat

e, 9

= n

one.

V

ine

Mat

urity

: 1=

very

ear

ly, 5

= m

id-s

easo

n, 9

= v

ery

late

. 2 T

uber

Dat

a:

Skin

Col

or: 1

= p

urpl

e, 2

= re

d, 3

= p

ink,

4 =

dar

k br

own,

5 =

bro

wn,

6 =

tan

to li

ght b

row

n, 7

= b

uff,

8 =

whi

te, 9

= c

ream

. Sk

in T

extu

re: 1

= pa

rtial

russ

et, 2

= h

eavy

russ

et, 3

= m

oder

ate

russ

et, 4

= li

ght r

usse

t, 5

= ne

tted,

6 =

slig

ht n

et, 7

= m

oder

atel

y sm

ooth

, 8

= sm

ooth

, 9 =

ver

y sm

ooth

. C

ross

Sec

tion:

1 =

ver

y fla

t, 3

= fla

t, 5

= in

term

edia

te to

ova

l, 7

= m

ostly

roun

d, 9

= v

ery

roun

d.

Skin

Set

: 1 =

ver

y po

or, 5

= fa

ir, 9

= e

xcel

lent

. Sh

ape:

1 =

ver

y ro

und,

2 =

mos

tly ro

und,

3 =

roun

d to

obl

ong,

4 =

mos

tly o

blon

g, 5

= o

blon

g, 6

= o

blon

g to

long

, 7 =

mos

tly lo

ng, 8

= lo

ng,

9 =

cylin

dric

al.

Eye

Dep

th: 1

= ve

ry d

eep,

5 =

med

ium

, 9 =

ver

y sh

allo

w.

Size

: 1 =

smal

l, 5

= m

ediu

m, 9

= la

rge.

T

uber

Dis

ease

: 1 =

ver

y se

vere

, 5 =

mod

erat

e, 9

= n

one.

O

vera

ll A

ppea

ranc

e: 1

= v

ery

poor

, 5 =

fair,

9 =

exc

elle

nt.

3 Inte

rnal

Def

ects

: Pe

rcen

tage

det

erm

ined

from

10

rand

omly

sele

cted

pot

atoe

s /re

p (4

0 to

tal)

in si

ze c

lass

es 3

and

4.

HN

=hea

t nec

rosi

s; H

NR

=ave

rage

hea

t nec

rosi

s rat

ing

(Rat

ing

Scal

e: 1

= ve

ry se

vere

to 9

= a

bsen

t); H

H=h

ollo

w h

eart;

VR

=vas

cula

r rin

g di

scol

orat

ion;

BC

=bro

wn

cent

er; S

R=s

oft r

ot

25

Table 3. North Carolina: UTZ Quality Foods Chip Data. ____________________________________________________________________________________________________ % Defects %Total Specific Defect Descriptions1 Chip Clone Internal External Defects Gravity Internal External Color2 A91814-5 23 0 23 1.076 VB,ID . 2 AF2211-9 9 0 9 1.079 ID,SB . 2 ATLANTIC 13 2 15 1.077 ID,SB ED 1 MSJ316-A 26 0 26 1.070 RR,ID . 3 MSJ461-1 3 0 3 1.073 SB . 2 ND5822C-7 3 0 3 1.080 ID,VB . 1 NY132 2 0 2 1.084 VB . 1 SNOWDEN 7 0 7 1.082 SB . 1 W1201(Megachip) 8 0 6 1.076 ID,VB . 2 W2133-1 3 0 3 1.078 SB . 2 1 Defect Descriptions:

ED = External Discoloration; ID = Internal Discoloration; RR = Ring Rot; SB = Stem End Browning; VB = Vascular Browning.

2 Chip Color: Ratings conducted by the UTZ Quality Foods Inc. in Hanover PA with in 24 hrs of harvest: 1 = no defects, exceptionally bright; 2 = excellent, bright; 3 = good, light or golden; 4 = dark defects, marginal; 5 = not acceptable. Agtron was not available at the time of chipping.

26

North Carolina 2005: Clone Summaries A91814-5: This was a mid-maturing clone, stands were 97% and vigor was better than fair. Shapes tended to be oblong, size was medium and appearance was poor. Marketable yield averaged 76% of Atlantic, gravity was 1.075 and chip color was good. At grading, high levels of soft rot were noted as well as misshapes, sunscald, and secondary growth. AF2211-9: This clone was mid-maturing, stands were 100% and vigor was better than fair. Shapes were mostly round, size was medium to large and overall appearance was fair. Marketable yield was 85% of Atlantic, gravity was 1.080, and chip color was good. Internally 13% brown center was noted, external defects included soft rot, sunscald, misshapes, and growth cracks. MSJ316-A: Stands were 99% for this slightly later than mid-maturing clone, and vigor was fair. This clone showed sensitivity to metribuzin in two of the four replicated plots. Tuber shapes were oblong, size was medium, and overall appearance was less than fair. Marketable yield was 85% of Atlantic, gravity was 1.067 and chip color was acceptable. Internally 53% IHN was expressed with a severity rating of 6.75, hollow heart was rated at 18%, brown center was recorded at 15% and soft rot was noted at 13%. External defects included soft rot, growth cracks, scab, Fusarium, infected lenticels, and sunscald. MSJ461-1: This was a slightly later than mid-maturing clone with 100% stands, and better than fair vigor. Sensitivity to metribuzin was noted in this clone in two out of four replicated plots. Shapes were round to oblong, size was medium, and overall appearance was fair. Marketable yield was 74% of Atlantic, gravity was 1.067 and chip color was fair. No significant internal defects were recorded, external defects included scab, soft rot, sunscald, and high levels of skin blemishes due to Rhizoctonia. ND5822C-7 (DAKOTA DIAMOND): This late maturing clone had 100% stands and good vigor. Shapes were mostly round, size was medium to large, and overall appearance was fair. Marketable yield was 109% of Atlantic, gravity was 1.085, and chip color was acceptable. Internal defects included 15% hollow heart, and 33% brown center. External defects included misshapes, soft rot, sunscald, Fusarium, enlarged lenticels, infected lenticels, growth cracks, and skin blemishes due to Rhizoctonia. NY132: Stands were 96% for this mid-maturing clone with fair vigor. This clone showed sensitivity to metribuzin in two of four replicated plots. Shapes were oblong, size was medium-large, and overall appearance was good. Marketable yield was 107% of Atlantic, gravity was 1.080, and chip color was acceptable. No significant internal defects were recorded. External defects were mishapes, soft rot, growth cracks, sunscald, and skin blemishes due to Rhizoctonia. W1201 (MEGACHIP): This was an earlier than mid maturing clone with better than fair vigor. Metribuzin sensitivity was noted in two of four plots. Shapes were round to oblong, size was larger than medium, and overall appearance was fair. Marketable yield was 82% of Atlantic, gravity was 1.078, and chip color was acceptable. Internal defects included 28% soft rot, external defects were high levels of soft rot, Fusarium, infected lenticels, sunscald, and skin blemishes due to Rhizoctonia. W2133-1: Stands were 89% for this earlier than mid-maturing clone with fair vigor. Shapes tended to be mostly round with an almost flat cross-section, size was slightly larger than medium, and overall appearance was fair. Marketable yield was 91% of Atlantic, gravity was 1.077, and chip color was good. No significant internal defects were recorded. External defects included soft rot, sunscald, misshapes, and infected lenticels.

27

28

Local Coordinator: Cooperative Grower: Cooperating Chip Processor:Dr. Bill Lamont James Hite Snyder of BerlinPenn State Univ. Patton, PA 16668 John BloughDepartment of Horticulture Berlin, PA 15530University Park, PA 16802

Trial Data:Planting Date: 16-May-01 Soil Temperature: 64ºFVine Kill Date: 14-Sep-01 (Reglone)Harvest Date: 17-Oct-01 (154 days) Soil Temperature: 60ºF

Row and plant spacing: 34 inches between rows, 10.5 inches between plantsPlot length 25 feet, 4 replications

Growing Season Weather: the growing season was cool, sunny and dry, with about1/2 inch rain from May 1 through October 31, 2005.

*Avg. High ºF *Avg. Low ºF *Rain (inches)May 64 43 0.03June 80 59 0.12July 82 61 0.15August NA NA 0.04September NA NA 0.04October 61 45 0.10*Pennsylvania State Climatologist 0.48As reported at Altoona, PA

Trial Procedure:Previous crop: OatsFertilizer: 13-13-13 1,250 poundsIrrigation: Plot was not irrigated. Rainfall 0.48 inches for growing season.Herbicides: Roundup followed by Sencor/Dual according to labelInsecticides: 16 oz. / A Admire at planting

1.3 pints ACA+/AcreFungicides: Manzate®, Bravo® according to labelVine Kill: Reglone according to labelSoil Type: Shaley loam

Pennsylvania Regional Trial

Tabl

e 1.

Yie

ld, S

ize

Dis

trib

utio

n, S

pecf

ic G

ravi

ty o

f 200

5 U

SPB

-SFA

var

ietie

s at

Pat

ton,

PA.

Yiel

d (c

wt/A

)Pe

rcen

t Siz

e D

istr

ibut

ion

Entr

yN

o. 1

Tota

lN

o. 1

Smal

l*M

id-S

ize

Larg

eC

ulls

S. G

.

SNO

WD

EN25

232

677

677

413

1.08

4

MS

J316

-19

224

274

827

824

71.

095

NY1

3221

228

175

575

812

1.08

0

ND

5822

C-7

193

285

6816

686

91.

095

ATLA

NTI

C19

126

173

373

915

1.08

4

MS

J461

-116

225

065

2565

010

1.08

6

W21

33-1

160

226

719

712

191.

077

A918

14-5

150

227

6624

660

101.

085

ME

GAC

HIP

148

206

729

721

191.

086

AF22

11-9

144

231

623

6215

191.

087

Aver

age

184

257

711.

086

* sm

all <

2"; m

idsi

ze 2

to 3

-1/4

"; la

rge

>3-1

/4".

29

Agtr

on a

Spec

ific

aM

atur

ity b

Entr

yC

olor

Gra

vity

Rat

ing

Not

es

A918

14-5

651.

089

2flo

wer

ing

ND

5822

C-7

611.

095

2flo

wer

ing

AF22

11-9

631.

079

8N

Y132

651.

084

7SN

OW

DEN

651.

084

6M

egac

hip

631.

088

6C

PB

MS

J461

-164

1.08

23

CP

BM

SJ3

16-1

963

1.08

82

flow

erin

g, C

PBAT

LAN

TIC

611.

081

7W

2133

-163

1.07

75

Aver

age

631.

085

5

Sam

ple

colle

cted

18-

Oct

-05

Sam

ple

proc

esse

d 20

-Oct

-05

Hol

ding

tem

pera

ture

54º

Fa:

Coo

pera

ting

Chi

p Pr

oces

sor S

nyde

r of B

erlin

, Ber

lin, P

A.

b: P

enn

Stat

e U

nive

rsity

, Dep

artm

ent o

f Hor

ticul

ture

, Uni

vers

ity P

ark,

PA

.R

atin

g Sc

ale:

1 =

Gre

en a

nd g

row

ing,

10

= N

early

Dea

dC

PB =

Col

orad

o Po

tato

Bee

tle in

hig

hly

visi

ble

num

bers

Tabl

e 2.

Mat

urity

ratin

g, a

t-har

vest

chi

p co

lor a

nd s

peci

fic g

ravi

ty o

f 200

5 U

SPB

-SFA

var

ietie

s at

Pat

ton,

PA.

30

Red River Valley Regional Trial LOCAL COOPERATOR: Duane Preston, UMN/NDSU Cooperator: Oberg Farms, Hoople, North Dakota Chip Cooperator: Barrel O Fun, Perham, Minnesota Seed: Hand cut and Douglas Fir Bark applied on May 13, 2005 Planted: with 2 row plot planter on May 20, 2005 Fungicide in Furrow: Ultraflourish 11.56 Oz/Ac Amistar 1.7 Oz/Ac Fertilizer: 130-110-150-3 ZN- Fall Applied Herbicide: Matrix 1 Oz. /Ac. Fungicides: Echo Zn 1.5 pints/Ac applied 6 times Insecticides: Leverage 3.75 Oz/Ac applied 2 times Plot: Non-Irrigated Harvested: September 20, 2005 Specific Gravity and Sucrose Rating Analysis: USDA Potato Processing Lab

September 21, 2005 Weighed and Graded: October 6, 2005 Chipped: Barrel O Fun, Perham, MN. September 26, 2005 Barrel O Fun, Perham, MN. November 22, 2005 Storage Samples: Placed in storage at USDA Potato Processing Lab, East Grand Forks, MN. October 6, 2005 Placed larger bag samples in storage at Windsor Farms, East Grand Forks, MN. October 7, 2005 Placed three additional bag samples in mesh bags, weighed into storage and will be weighed out in the following months to evaluate weight loss (shrinkage and quality differences). October 7, 2005

31

Tab

le 1

. R

RV

USP

B-S

FA T

rial

- 20

05 -

yie

ld, s

ize

dist

ribu

tion,

pla

nt v

igor

, hol

low

hea

rt, a

nd sp

ecifi

c gr

avity

.H

ollo

wS p

ecifi

cC

lone

US

#1T

otal

US

#1<

2 in

2-3

1/2

in>

3 1/

2 in

Cul

ls28

-Jun

6-Ju

lH

eart

Gra

vity

ND

5822

C-7

358

402

893

7023

42

20

1.08

8

A91

814-

528

534

184

788

05

13

01.

099

W21

33-1

279

328

857

854

42

31

of 1

01.

099

MEG

AC

HIP

277

318

875

874

42

30

1.10

7

MSJ

461-

126

931

685

1486

01

23

01.

099

MSJ

316-

A24

230

280

1880

11

24

01.

090

AT

LA

NT

IC22

733

284

576

135

33

6 of

10

1.08

5

SNO

WD

EN

217

262

8310

825

42

21

of 1

01.

104

NY

132

182

209

8710

872

22

31

of 3

1.10

1

AF2

211-

918

020

986

485

65

23

5 of

10

1.09

9

* Pla

nt v

igor

(gro

wth

) rat

ings

: 1

= be

st;

5 =

wea

kest

Yie

ld (c

wt/a

cre)

Perc

ent S

ize

Dis

trib

utio

n

OB

ER

G F

AR

MS-

RE

D R

IVE

R V

AL

LE

Y-N

OR

TH

DA

KO

TA

Plan

t Vig

or *

32

Tab

le 2

. R

RV

USP

B-S

FA T

rial

- 20

05 -

Shr

ink,

sucr

ose,

glu

cose

, spe

cific

gra

vity

and

agt

ron

read

ings

. BO

F - F

eb 8

, 06

Perc

ent

Spec

ific

Sucr

ose

Glu

cose

Spec

ific

Agt

ron

Spec

ific

Agt

ron

Spec

ific

Agt

ron

Clo

neSh

rink

Gra

vity

(mg/

g)(m

g/g)

Gra

vity

Gra

vity

Gra

vity

ND

5822

C-7

1.57

1.08

81.

0033

0.00

411.

087

691.

087

541.

085

65

A91

814-

51.

191.

099

1.12

150.

0028

1.09

765

1.09

340

1.08

654

W21

33-1

1.88

1.09

91.

3315

0.00

001.

103

641.

101

551.

098

61

MEG

AC

HIP

1.07

1.10

70.

8099

0.00

001.

104

611.

104

601.

099

63

MSJ

461-

11.

401.

099

0.88

920.

0000

1.09

760

1.09

856

1.09

62

MSJ

316-

A1.

131.

090

0.94

970.

0000

1.10

470

1.09

156

1.08

755

AT

LA

NT

IC1.

831.

085

0.67

100.

0000

1.10

361

1.10

542

1.08

748

SNO

WD

EN

1.40

1.10

41.

3512

0.00

001.

104

721.

104

621.

092

65

NY

132

1.12

1.10

11.

2196

0.00

001.

106

681.

108

591.

104

63

AF2

211-

92.

121.

099

0.99

550.

0000

1.09

866

1.10

154

1.08

960

Perc

ent s

hrin

k be

twee

n 7-

Oct

-05

and

18-N

ov-0

5 (s

ampl

es p

lace

d in

stor

age

7-O

ct, s

tore

d 50

F fo

r 2 m

onth

s, th

en 4

8F).

Spec

ific

grav

ity a

nd su

cros

e an

alys

is:

USD

A P

otat

o Pr

oces

sing

Lab

, Eas

t Gra

nd F

orks

, MN

, Sep

21.

Spec

ific

grav

ity a

nd A

gtro

n ch

ip re

adin

gs:

Bar

rel o

f Fun

, Per

ham

, MN

, Sep

26

and

Nov

22

of 2

005

and

Feb

8, 2

006.

USD

A L

ab -

Sep

21, 0

5B

OF

- Sep

26,

05

BO

F - N

ov 2

2, 0

5

33

RRV Agtron Comparison by Date

65

66

61

61

70

60

69

68

72

64

40

54

42

60

56

56

54

59

62

55

0

10

20

30

40

50

60

70

80

A 91814-5

AF 2211-9

ATLANTIC

MEGACHIP

MSJ 316A

MSJ 461-1ND 5822C-7

NY 132

SNOWDEN

W 2133-1

9/26/2005

11/22/2005

34

RRV Specific Gravity Comparison by Date

1.097

1.097

1.106

1.103

1.093

1.101

1.105

1.091

1.098

1.087

1.108

1.101

1.098

1.103

1.104

1.104

1.087

1.104

1.104

1.104

1.075

1.08

1.085

1.09

1.095

1.1

1.105

1.11

A 91814-5

AF 2211-9

ATLANTIC

MEGACHIP

MSJ 316A

MSJ 461-1

ND 5822C-

7NY 132

SNOWDEN

W 2133-1

9/26/2005

11/22/2005

35

Tabl

e 3.

Ove

rall

aver

age

yiel

d, p

erce

nt s

ize

dist

ribut

ion

and

culls

, spe

cific

gra

vity

and

out

of f

ield

chi

pco

lor f

or e

ight

line

s an

d tw

o st

anda

rds

grow

n in

FL,

ID, M

E, M

I, N

C, P

A a

nd R

RV

in 2

005.

Spec

ific

Stat

eC

lone

No.

1To

tal

No.

1Sm

all

Mid

-Siz

eLa

rge

Cul

lsG

ravi

tyA

gtro

nSF

A

FLA

9181

4-5

315

405

7818

810

51.

086

IDA

9181

4-5

388

531

7323

685

41.

099

1.5

ME

A91

814-

520

021

892

692

02

1.07

670

.5M

IA

9181

4-5

301

407

7421

722

51.

067

58.2

4.0

NC

A91

814-

526

442

163

1963

017

1.07

52.

0P

AA

9181

4-5

150

227

6624

660

101.

085

65.0

RR

VA

9181

4-5

285

341

847

880

51.

099

65.0

aver

age

272

364

7617

761

71.

084

64.7

2.5

FLA

F221

1-9

285

335

857

902

71.

085

IDA

F221

1-9

222

288

7720

752

31.

092

1.5

ME

AF2

211-

927

628

597

390

70

1.07

369

.1M

IA

F221

1-9

184

226

8312

757

51.

070

57.2

4.0

NC

AF2

211-

929

839

875

1174

115

1.08

02.

0P

AA

F221

1-9

144

231

623

6215

191.

087

63.0

RR

VA

F221

1-9

180

209

864

856

51.

099

66.0

aver

age

227

282

819

796

81.

084

63.8

2.5

FLA

TLA

NTI

C30

735

487

891

15

1.08

7ID

ATL

AN

TIC

259

329

7918

6613

41.

097

2.2

ME

ATL

AN

TIC

345

369

942

5737

41.

071

70.3

MI

ATL

AN

TIC

275

318

879

852

41.

081

63.1

3.0

NC

ATL

AN

TIC

349

416

849

840

71.

079

1.0

PA

ATL

AN

TIC

191

261

733

739

151.

084

61.0

RR

VA

TLA

NTI

C27

733

284

576

135

1.08

561

.0av

erag

e28

634

084

876

116

1.08

363

.92.

1

Fiel

d C

hip

Col

orYi

eld

(cw

t/acr

e)Pe

rcen

t Gra

de a

nd S

ize

Dis

trib

utio

n

36

Tabl

e 3.

Con

tinue

d:Sp

ecifi

cSt

ate

Clo

neN

o. 1

Tota

lN

o. 1

Smal

lM

id-S

ize

Larg

eC

ulls

Gra

vity

Agt

ron

SFA

FLD

AK

OTA

DIA

MO

ND

319

396

8118

810

11.

086

IDD

AK

OTA

DIA

MO

ND

552

657

8414

796

21.

090

1.3

ME

DA

KO

TA D

IAM

ON

D22

123

495

388

72

1.07

469

.5M

ID

AK

OTA

DIA

MO

ND

621

648

953

7223

21.

089

64.1

2.0

NC

DA

KO

TA D

IAM

ON

D38

048

678

1478

08

1.08

51.

0P

AD

AK

OTA

DIA

MO

ND

193

285

6816

686

91.

095

61.0

RR

VD

AK

OTA

DIA

MO

ND

358

402

893

7023

41.

088

69.0

aver

age

378

444

8410

779

41.

087

65.9

1.4

FLM

EG

AC

HIP

302

348

878

911

51.

090

IDM

EG

AC

HIP

423

486

877

6819

61.

101

1.3

ME

ME

GA

CH

IP20

220

499

094

40

1.07

268

.0M

IM

EG

AC

HIP

368

399

926

839

21.

083

61.7

2.0

NC

ME

GA

CH

IP28

638

075

1275

013

1.07

82.

0P

AM

EG

AC

HIP

148

206

729

721

191.

086

63.0

RR

VM

EG

AC

HIP

277

318

875

874

41.

107

61.0

aver

age

287

335

867

815

71.

088

63.4

1.8

FLM

SJ3

16-A

334

429

7819

791

31.

086

IDM

SJ3

16-A

349

470

7425

731

11.

097

1.2

ME

MS

J316

-A26

828

594

593

11

1.06

568

.3M

IM

SJ3

16-A

380

420

917

829

21.

079

59.5

3.0

NC

MS

J316

-A29

341

670

1870

012

1.06

73.

0P

AM

SJ3

16-A

224

274

827

824

71.

095

63.0

RR

VM

SJ3

16-A

242

302

8018

801

11.

090

70.0

aver

age

299

371

8114

802

41.

083

65.2

2.4

FLM

SJ4

61-1

154

299

5244

520

21.

070

IDM

SJ4

61-1

354

482

7323

686

31.

090

1.5

ME

MS

J461

-128

434

582

1881

10

1.06

369

.5M

IM

SJ4

61-1

404

474

8515

841

01.

073

61.7

2.0

NC

MS

J461

-125

938

667

2567

08

1.06

72.

0P

AM

SJ4

61-1

162

250

6525

650

101.

086

64.0

RR

VM

SJ4

61-1

269

316

8514

860

11.

099

60.0

aver

age

269

365

7323

721

31.

078

63.8

1.8

Yiel

d (c

wt/a

cre)

Perc

ent G

rade

and

Siz

e D

istr

ibut

ion

Fiel

d C

hip

Col

or

37

Tabl

e 3.

Con

tinue

d:Sp

ecifi

cSt

ate

Clo

neN

o. 1

Tota

lN

o. 1

Smal

lM

id-S

ize

Larg

eC

ulls

Gra

vity

Agt

ron

SFA

FLN

Y13

228

734

982

1583

01

1.09

1ID

NY

132

352

431

8217

757

21.

099

1.3

ME

NY

132

208

220

946

896

01.

063

69.7

MI

NY

132

260

300

8711

816

21.

080

64.1

3.0

NC

NY

132

373

452

839

821

81.

080

1.0

PA

NY

132

212

281

755

758

121.

080

65.0

RR

VN

Y13

218

220

987

1087

22

1.10

168

.0av

erag

e26

832

084

1082

44

1.08

566

.71.

8

FLS

NO

WD

EN

193

268

7224

730

21.

079

IDS

NO

WD

EN

319

439

7327

702

01.

089

1.5

ME

SN

OW

DE

N19

621

193

593

02

1.06

669

.5M

IS

NO

WD

EN

375

403

946

895

01.

082

67.8

2.0

NC

SN

OW

DE

N28

339

771

2271

07

1.07

91.

0P

AS

NO

WD

EN

252

326

776

774

131.

084

65.0

RR

VS

NO

WD

EN

217

262

8310

825

41.

104

72.0

aver

age

262

329

8014

792

41.

083

68.6

1.5

FLW

2133

-125

529

886

1286

12

1.08

1ID

W21

33-1

339

486

7029

663

11.

090

1.2

ME

W21

33-1

230

251

928

884

11.

066

71.1

MI

W21

33-1

304

336

918

838

11.

084

59.1

2.0

NC

W21

33-1

320

408

7814

771

71.

077

2.0

PA

W21

33-1

160

226

719

712

191.

077

63.0

RR

VW

2133

-127

932

885

785

44

1.09

964

.0av

erag

e27

033

382

1279

35

1.08

264

.31.

7

Siz

e ca

tego

ries:

Sm

all i

s un

der 1

7/8

inch

dia

.; M

id-S

ize

1 7/

8 to

3 1

/2 in

ch d

ia.;

and

Larg

e is

ove

r 3 1

/2 in

ch d

ia.

Yiel

d (c

wt/a

cre)

Perc

ent G

rade

and

Siz

e D

istr

ibut

ion

Fiel

d C

hip

Col

or

38

Tabl

e 4.

Thr

ee y

ear a

vera

ges

over

eig

ht re

gion

al tr

ial s

ites

for D

akot

a D

iam

ond

(ND

5822

C-7

) fro

m 2

003

to 2

005.

Spec

ific

Reg

iona

l Loc

atio

nYe

arN

o. 1

Tota

lN

o. 1

Smal

lM

id-S

ize

Larg

eC

ulls

Gra

vity

Cal

iforn

ia *

2003

211

267

7847

320

211.

088

Flor

ida

2005

319

396

8118

810

11.

086

Flor

ida

2004

257

401

6415

650

21.

085

Flor

ida

2003

188

293

649

679

151.

063

Flor

ida

aver

age

255

363

7014

713

61.

078

Idah

o20

0555

265

784

1479

62

1.09

0Id

aho

2004

543

683

8018

6713

21.

091

Idah

o20

0347

249

196

496

00

1.08

5Id

aho

aver

age

522

610

8712

816

11.

089

Mai

ne20

0522

123

495

388

72

1.07

4M

aine

2004

294

463

643

4618

151.

080

Mai

ne20

0331

534

392

373

196

1.08

6M

aine

aver

age

277

346

843

6915

81.

080

Mic

higa

n20

0562

164

895

372

232

1.08

9M

ichi

gan

2004

673

705

953

7025

21.

085

Mic

higa

n20

0356

760

194

366

283

1.08

9M

ichi

gan

aver

age

620

651

953

6925

21.

088

Nor

th C

arol

ina

*20

0538

048

678

1478

08

1.08

5

Pen

nsyl

vani

a20

0519

328

568

1668

69

1.09

5P

enns

ylva

nia

2004

320

454

705

702

221.

084

Pen

nsyl

vani

a20

0315

929

753

353

638

1.08

8Pe

nnsy

lvan

iaav

erag

e22

434

564

864

523

1.08

9

Red

Riv

er V

alle

y20

0535

840

289

370

234

1.08

8R

ed R

iver

Val

ley

2004

374

416

904

903

31.

091

Red

Riv

er V

alle

y20

0334

439

088

1089

12

1.10

2R

ed R

iver

Val

ley

aver

age

359

403

896

839

31.

094

over

all a

vera

ge36

844

681

1071

98

1.08

6S

ize

cate

gorie

s: S

mal

l is

unde

r 1 7

/8 in

ch d

ia.;

Mid

-Siz

e 1

7/8

to 3

1/2

inch

dia

.; an

d La

rge

is o

ver 3

1/2

inch

dia

.*

Cal

iforn

ia w

ith o

ne tr

ial i

n 20

03 a

nd N

orth

Car

olin

a w

ith o

ne tr

ial i

n 20

05.

Yiel

d (c

wt/a

cre)

Perc

ent G

rade

and

Siz

e D

istr

ibut

ion

39

2004 USPB-SFA Trial Grown at Aberdeen, Idaho.

Chip Chip Undesirable Internal Exterior Total CLONE 40 50 color Blackspot Green defects defects defects

ND5822C-7 3.6 1.4 0 3 0 0 5 8A91790-13 1.3 1.0 0 12 3 0 0 15B1240-1 3.8 1.9 0 13 11 6 0 30MSJ461-1 4.6 1.5 0 10 0 5 0 15W1201 4.0 1.8 0 0 5 0 9 14ATLANTIC 4.4 1.7 0 6 0 0 8 14ND2470-27 3.9 1.9 9 0 0 0 0 9NY132 2.6 1.0 0 9 13 2 0 24AF2211-9 4.1 1.7 0 13 11 0 5 29W1773-7 4.9 2.3 11 0 0 0 0 11MSF099-3 3.5 1.5 0 0 0 3 6 9SNOWDEN 4.3 1.0 0 0 0 0 4 4

Samples harvested September 25 and gradually cooled to 50F.Samples stored at 40F and 50F for 6 weeks.Samples rated on Feburary 10, 2005.

2004 USPB-SFA Trial Grown at Exeter, Maine.SFA Chip Color Rating (55°F) **

Entry 4-Nov 5-Jan A91790-13 3 3 AF2211-9 2 3 ATLANTIC 3 3 B1240-1 3 2 MSF099-3 2 3 MSJ461-1 3 3 ND2470-27 3 3 ND5822C-7 3 3 NY132 2 3 SNOWDEN 1 1 W1201 3 3 W1773-7 2 3

** Storage chip color rated using SFA Chart Rating 1 to 3 scale.

Out of Storage Quality Report

6 week cool down 6 weeks storage

R&G Potato Company Ratings (0-15 15=Frito Lay rejection std)

2004-2005 OUT-OF-STORAGE EVALUATIONS

40

Tabl

e 5.

Thr

ee y

ear a

vera

ges

over

eig

ht re

gion

al tr

ial s

ites

for M

egac

hip

(W12

01)

from

200

3 to

200

5.Sp

ecifi

cR

egio

nal L

ocat

ion

Year

No.

1To

tal

No.

1Sm

all

Mid

-Siz

eLa

rge

Cul

lsG

ravi

ty

Cal

iforn

ia *

2003

489

506

9714

758

31.

095

Flor

ida

2005

302

348

878

911

51.

09Fl

orid

a20

0431

436

782

686

12

1.09

1Fl

orid

a20

0327

834

082

577

107

1.07

9Fl

orid

aav

erag

e29

835

284

685

45

1.08

7

Idah

o20

0542

348

687

768

196

1.10

1Id

aho

2004

419

493

859

7114

61.

096

Idah

o20

0343

043

998

297

10

1.09

2Id

aho

aver

age

424

473

906

7911

41.

096

Mai

ne20

0520

220

499

094

40

1.07

2M

aine

2004

210

326

645

577

311.

083

Mai

ne20

0323

526

688

676

126

1.08

9M

aine

aver

age

216

266

844

768

121.

081

Mic

higa

n20

0536

839

992

683

92

1.08

3M

ichi

gan

2004

488

504

973

8017

01.

091

Mic

higa

n20

0342

243

896

385

111

1.08

5M

ichi

gan

aver

age

426

447

954

8312

11.

086

Nor

th C

arol

ina

*20

0528

638

075

1275

013

1.07

8

Pen

nsyl

vani

a20

0514

820

672

972

119

1.08

6P

enns

ylva

nia

2004

227

307

742

746

181.

098

Pen

nsyl

vani

a20

0325

034

972

372

1114

1.09

7Pe

nnsy

lvan

iaav

erag

e20

828

773

573

617

1.09

4

Red

Riv

er V

alle

y20

0527

731

887

587

44

1.10

7R

ed R

iver

Val

ley

2004

271

323

843

849

51.

099

Red

Riv

er V

alle

y20

0327

730

890

792

13

1.09

8R

ed R

iver

Val

ley

aver

age

275

316

875

885

41.

101

over

all a

vera

ge31

636

585

680

77

1.09

1S

ize

cate

gorie

s: S

mal

l is

unde

r 1 7

/8 in

ch d

ia.;

Mid

-Siz

e 1

7/8

to 3

1/2

inch

dia

.; an

d La

rge

is o

ver 3

1/2

inch

dia

.*

Cal

iforn

ia w

ith o

ne tr

ial i

n 20

03 a

nd N

orth

Car

olin

a w

ith o

ne tr

ial i

n 20

05.

Yiel

d (c

wt/a

cre)

Perc

ent G

rade

and

Siz

e D

istr

ibut

ion

41

OUT-OF-STORAGE CHIP QUALITY 2004-2005 MICHIGAN REGIONAL REPORT

Chris Long, Michigan State University

Procedure: The 2004 USPB - SFA Chip Trial was harvested on October 4, 2004 at V & G Farms in Stanton, MI. Several chip storage samples were collected at harvest. A 40 pound sample was collected from each entry and placed in the cooperating grower’s commercial storage for later evaluation. Four 25 tuber samples were also collected from each entry at harvest and stored in cold storages at the Michigan Potato Industries (MPIC), Cargill Potato Demonstration Storage Facility. Two samples were stored at 55ºF for a January and March evaluation. The remaining two, 25 tuber samples were stored at 48ºF to be evaluated in January and March as well. Results: The 40 pound tuber samples placed in the grower’s commercial storage were removed in early April 2005. The storage temperature was maintained at 48 ºF. For sprout control, CIPC was applied in the storage in late November 2004. Table 1 summarizes the chip quality of these 40 pound samples after being processed at Herr Foods, Inc. in early April 2005. The varieties are listed in yield order from top to bottom, highest to lowest. Table 2 summarizes the chip quality of the 25 tuber samples collected at harvest from each entry and stored at the MPIC demonstration storage in the fall of 2004. The samples were stored at 48ºF and 55ºF and were chipped on January 27th and March 24th, 2005. All samples were treated with CIPC in mid November. Table 1 shows A91790-13 exhibiting the best overall quality chip from Herr Foods in April. MSJ461-1 also performed nicely with only 17% total defects noted, but the specific gravity was not acceptable. From Table 2, A91790-13 appears to have the best quality chip color and internal defect scores. W1773-7 performed well into March with good chip color and no internal defects. All the varieties were acceptable in March, but with a variable amount of internal defects.

42

43

Table 1. 2004-2005 Out of Storage Chip Quality, V & G Farms1.Agtron SFA2 Specific

Entry Color Color Gravity Internal External TotalND5822C-7 46.1 4.0 1.088 75 9 84A91790-13 61.5 1.0 1.089 5 7 12W1201 58.9 2.5 1.087 17 12 29B01240-1 55.7 2.5 1.080 18 11 29MSJ461-1 58.7 1.5 1.071 9 8 17SNOWDEN 59.1 1.5 1.080 6 6 12ATLANTIC 55.0 4.0 1.086 33 42 75ND2470-27 57.4 1.5 1.073 19 19 38MSF099-3 56.6 2.5 1.080 15 7 22W1773-7 59.5 2.0 1.086 8 8 16NY132 59.2 1.5 1.089 14 11 25AF2211-9 40.9 4.0 1.083 37 1 38

1 Samples removed from 48F storage in early April 2005 and processed by Herr Foods Inc., Nottingham, PA in early April 2005.

Chip defects are included in Agtron and SFA samples.2 SFA Color: 1 = lightest, 5 = darkest 3 Percent Chip Defects are a percentage by weight of the total sample; comprised of undesirable color, greening, internal defects and external defects.

Percent Chip Defects3

Table 2. 2004-2005 Out of Storage Chip Quality Samples, Cargill Storage1.

SFA2 SFA2 SFA2 SFA2

ENTRY COLOR COLOR COLOR COLORND5822C-7 1.5 4% IBS 1.0 Black Spot Bruise 1.0 Brown Edges, Silver Scurf 1.0 4% HHA91790-13 1.0 1.0 1.0 1.0W1201 1.0 1.0 4% IBS, 8% SED 1.0 4% HH 1.0B01240-1 2.0 1.0 4% HH 1.0 4% HH 1.0 4% HH, 4% SEDMSJ461-1 1.0 1.5 Black Spot Bruise 1.0 1.0SNOWDEN 1.0 1.0 1.0 4% BC 1.0 4% HHATLANTIC 1.5 1.5 4% IBS 1.5 4% HH, 8% SED 1.5 4% BC, 8% VDND2470-27 1.0 4% IBS 1.0 1.0 4% VD 1.0 4% VDMSF099-3 1.0 12% SED 1.0 1.5 16% SED 1.5 12% SEDW1773-7 1.5 1.0 1.0 1.0NY132 1.0 4% HH, Black Spot Bruise 1.5 4% HH 1.5 4% HH 1.0 4% HHAF2211-9 1.0 4% HH, Heat Necrosis 1.0 Heat Necrosis 1.0 1.0

1 Samples Stored at the Michigan Potato Industry Commission's Cargill Potato Demonstration Storage

2 SFA 1-5 Color Score; 1 = lighest, 5 = darkest

3 HH = hollow heart; VD = vascular discoloration; SED = stem end discoloration; IBS = internal brown spot.

CHIP3

DEFECTSCHIP3

DEFECTSCHIP3

DEFECTSCHIP3

DEFECTS

48ºF January 27, 2005 55ºF January 27, 2005 48ºF March 24, 2005 55ºF March 24, 2005

Penn

sylv

ania

Reg

iona

l Tria

l

Tabl

e 1.

200

4 U

SPB

- SF

A c

hip

tria

l var

ietie

s st

orag

e in

form

atio

n.A

vera

ge s

prou

t len

gth

in in

ches

.En

try

31-J

an-0

528

-Feb

-05

31-M

ar-0

5Sp

ecifi

cA

gtro

45ºF

note

s45

ºFno

tes

45ºF

note

sG

ravi

tye

Col

or S

ATL

AN

TIC

0.7

1.5

2.0

b, d

1.09

563

SNO

WD

EN0.

51.

23.

0b

1.09

965

B12

40-1

0.0

0.7

3.2

b1.

081

57

NY

132

0.0

0.2

1.0

1.08

465

ND

2470

-27

0.7

1.2

1.8

b1.

083

65N

D58

22C

-70.

00.

01.

01.

093

64

W17

73-7

0.5

1.0

1.8

1.08

265

W12

010.

71.

02.

71.

094

63A

F221

1-9

0.0

0.7

0.8

1.09

664

MS

J-46

1-1

0.0

1.0

3.3

1.07

563

MS

F-09

9-3

0.8

1.7

3.0

b1.

088

65A

9179

0-13

0.0

0.2

1.5

d1.

085

65

a =

sam

ples

less

than

0.5

" wer

e re

porte

d as

0.5

"b

= m

inor

tube

r shr

inka

ge

c =

maj

or tu

ber s

hrin

kage

d =

FDR

is F

usar

ium

Dry

Rot

e =

Dat

a pr

ovid

ed b

y S

nyde

r's o

f Ber

lin. S

ampl

e da

te: J

anua

ry 2

7, 2

005.

f = v

ascu

lar b

row

ning

44

Tab

le 1

. A

gtro

n ch

ip v

alue

s and

spec

ific

grav

ity fr

om fo

ur c

hip

date

s.

Var

iety

Agt

ron

SR.

GL

U.

Sp. G

r.A

gtro

nSp

. Gr.

Agt

ron

Sp. G

r.A

gtro

nSp

. Gr.

A91

790-

1367

1.50

0.00

01.

079

651.

093

681.

090

671.

098

AF2

211-

968

1.67

0.00

91.

097

591.

105

641.

106

681.

104

AT

LA

NT

IC67

1.72

0.05

51.

088

411.

107

361.

104

571.

110

B12

40-1

662.

190.

012

1.07

757

1.09

137

1.09

359

1.09

5

MSF

099-

368

1.33

0.00

01.

093

591.

099

581.

103

671.

095

MSJ

461-

167

1.39

0.00

01.

086

651.

095

551.

096

641.

970

ND

2470

-27

681.

030.

000

1.08

671.

100

591.

092

641.

094

ND

5822

C-7

671.

980.

000

1.08

862

1.09

750

1.10

454

1.10

2

NY

132

661.

580.

000

1.08

958

1.10

159

1.10

568

1.10

6SN

OW

DE

N68

1.46

0.03

41.

094

631.

100

631.

105

691.

100

W12

0166

1.32

0.00

01.

088

611.

099

521.

107

631.

102

W17

73-7

660.

960.

000

1.08

660

1.09

656

1.10

464

1.10

0

Tria

l har

vest

ed S

ep 1

6, 2

004.

U

SDA

Pot

ato

Proc

essi

ng L

ab, E

ast G

rand

For

ks, M

N c

ondu

cted

Agt

ron,

sucr

ose,

glu

cose

and

spec

ific

grav

ity -

9/17

/200

4.Sa

mpl

es C

hipp

ed a

t Bar

rel O

Fun

, Per

ham

, Min

neso

ta, o

n 9/

21/2

004,

12/

29/2

004

and

4/13

/200

5.

2004

-200

5

USP

B-S

FA T

rial

-Red

Riv

er V

alle

y

13-A

pr17

-Sep

Sep

21D

ec 2

9

45

Atlantic and Snowden as Standards NDO1496-1 (Ivory Crisp), 1993-1995WNC672-2, 1985-1987 ND2417-6 (NorValley), 1994-1996WNC521-12, 1985-1986 ND2471-8, 1994-1996W879, 1985-1986 AF875-15, 1994-1996W833, 1985 NY87 (Reba), 1991TXA17-1, 1985-1986 NY95, 1993A70369-2, 1985-1986 NY102 (Monticello), 1994-1995ND860-2, 1985-1986 NY103 (Eva), 1995-1997G670-11, 1985 BCO894-2, 1995-1997BR7093-24 (Gemchip), 1986-1988 ATX85404-8, 1996-1998W848 (Niska), 1986-1987 AF1433-4, 1996-1998NY71 (Kanona), 1986-1988 ND2676-10 (Dakota Pearl), 1997-1999NY81 (Steuben), 1986-1988 B0564-8 (Harley Blackwell), 1997-1999NY72 (Allegany), 1987-1989 B0564-9, 1997-1999AF236-1 (Somerset), 1987-1989 NY115, 1997-1999MS700-70, 1987-1989 W1313, 1999AC80545-1 (Chipeta), 1987-1989 NY112 (Marcy), 1998-2000LA01-38 (LaBelle), 1988-1990 AF1668-60, 1998-2000MS716-15, 1988-1990 MSNT-1, 1998-2000MS700-83 (Spartan Pearl), 1988-1990 MSA091-1 (Liberator), 1999-2001W855 (Snowden), 1988-1990 B0766-3, 2000-2002Saginaw Gold, 1988-1990 AF1775-2, 2000-2002AF875-16 (Mainechip), 1989-1991 W1431, 2000-2002D195-24, 1989 NY120, 2000-2002ND2008-2, 1990 AF1424-7, 2001-2003Coastal Chip, 1990 MSG227-2, 2001-2003CS7232-4, 1990-1992 W1355-1 (White Pearl), 2001-2003Pike, 1991-1993 NDTX4930-5W, 2001-2003Andover, 1991-1993 ND2470-27 (Dakota Crisp), 1999, 2003-2004W887, 1991-1993 A91790-13, 2002-2004W870, 1991-1993 MSF099-3, 2002-2004A80559-2, 1991-1993 B1240-1, 2004NDA2031-2, 1992-1994 W1773-7, 2004Suncrisp, 1992-1994 ND5822C-7 (Dakota Diamond), 2003-2005B0178-34, 1992-1994 W1201( Megachip), 2003-2005

Table 6. USPB-SFA Chip Trial Entry Summary: 1985 - 2005

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