2007 - Potatoes at WSU - Washington State University

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LTS Rick Knowles and crew harvesting a trial in late September. It is a group effort at harvest time. 2007 Potato Cultivar Evaluations 67 WSU Potato Research Group
ERT 2007 Early Harvest Regional Trial Location: WSU Research Center - Othello, WA Planting Date: April 4 Vine Kill Date: July 23 Harvest Date: Aug 6 Days Grown: 110 Fertility: 278-175-400 In-Row Spacing: 12 in. Regional trials are conducted throughout the western region of the United States, including Washington. Entries in the Regional Trial are chosen by a coordinating committee and are grown for both early (Early Regional) and full (Late Regional) season harvest. The 2007 early harvest trial compared 4 local reference varieties to 16 new clones on the WSU Othello Research Station. Overall, most clones had a nice, typy shape; the reference varieties were among the ugliest and had the most non-uniform shape. The following is a summary of the Washington field and post-harvest results. For additional information, see the grading comments and merit scores near front of book. Fresh Market Standouts: CO97138-7Ru, CO97138-3Ru, AOTX95265-3Ru Process Market Standouts: AO96141-3, AO96164-1, A95409-1 Suggested Discards: AC96052-1Ru, CO95172-3Ru Standcounts ‣ 40 Day Fast emergence: A95409-1, A96104-2, Ranger, Russet Burbank, Norkotah, (all > 97%) Slow emergence: AC96052-1Ru (15%), AOA95155-7 (32%), and A97287-6 (57%), all other entries were > 67%. ‣ 50 Day Full emergence: Most entries had > 95% of plants emerged at 50 DAP. Poor emergence: AC96052-1Ru (92%) and CO97138-3Ru (93%). Plant and Tuber Growth & Development ‣ Above Ground Stem Number Per Plant Most: TXA549-1Ru (2.4) and AO96141-3 (2.3) Least: A97287-6 (1.3). ‣ Average Tuber Number Per Plant Most: Norkotah (7.7), CO97087-2Ru, and TXA549-1Ru (7.0). Least: Shepody (4.5), AO96164-1 (4.7), and A95409-1 (4.8). ‣ Average Tuber Size (oz) Largest: AO96164-1 (9.8), Shepody (9.7), and A95409-1 (9.5). Smallest: AC96052-1Ru (4.5), AOA95155-7 (5.0), and AOA95154-1 (5.2). ‣ Undersized Tubers (< 4 oz) Most: AC96052-1Ru, AOA95154-1, and AOA95155-7. Fewest: A95409-1 and Shepody. 2007 Potato Cultivar Evaluations 68 WSU Potato Research Group
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2007 Potato Cultivar Yield and Post
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Table of Contents Introduction.....
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INTRODUCTION The 2007 Washington
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2007 Growing Season Temperatures Ap
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OVERALL CULTIVAR & CLONE PERFORMANC
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ADVANCED LINES - REGIONAL TRIAL Pro
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At-Harvest Grading Comments & Fresh
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Fresh Market Value - Methods Econom
Page 17 and 18: 2007 Postharvest Procedures Early H
Page 19 and 20: Calculation of Total Score - The ov
Page 21 and 22: ETS 2007 Early Harvest Tri-State Tr
Page 29 and 30: ETS Tubers Fries WA Early Harvest T
Page 31 and 32: ETS Tubers Fries WA Early Harvest T
Page 33 and 34: ETS Josh Rodriguez gives a new mean
Page 35 and 36: LTS 2007 Late Harvest Tri-State Tri
Page 45 and 46: LTS Tubers Ranger Russet WA Late Ha
Page 47 and 48: LTS Tubers A98345-1 WA Late Harvest
Page 49 and 50: LTS Tubers PA00N15-2 WA Late Harves
Page 51 and 52: LTS Tubers PA99N82-4 WA Late Harves
Page 55 and 56: LTS “A meeting of the minds” du
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Page 71 and 72: ERT 2007 Early Harvest Regional Tri
Page 77 and 78: ERT Tubers Fries WA Early Harvest R
Page 79 and 80: ERT Tubers Fries WA Early Harvest R
Page 83 and 84: LRT 2007 Late Harvest Regional Tria
Page 93 and 94: LRT Tubers Ranger Russet WA Late Ha
Page 95 and 96: LRT Tubers AC96052-1Ru WA Late Harv
Page 97 and 98: LRT Tubers AOTX95265-3Ru WA Late Ha
Page 113 and 114: LRT Late Harvest Fresh-Processing E
Page 115 and 116: RED & SPECIALTY 2007 Red and Specia
Page 117 and 118: RED & SPECIALTY ‣ For oven baked
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RED & SPECIALTY 2007 Regional Red a
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RED & SPECIALTY 2007 Regional Red a
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RED & SPECIALTY Tubers WA Red and S
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RED & SPECIALTY 2007 Washington Reg
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RED & SPECIALTY 2007 Washington Reg
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Index of Clones and Cultivars Early
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2007 - Potatoes at WSU - Washington State University

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