2007 - Potatoes at WSU - Washington State University

Yield and Economic Data
LRT
‣ Total and Market Yield
Highest: CO97138-7Ru had the highest total & market yields (692 CWT/A & 619 CWT/A,
respectively). CO95172-3Ru & TXA549-1Ru had total yields > 665 CWT/A.
Lowest: AC96052-1Ru had the lowest total and market yield (469 CWT/A & 331 CWT/A,
respectively).
‣ % Market Yield Greater Than 6 oz.
Highest: Ranger Russet, Russet Norkotah, and AO96164-1 (all > 78%).
Lowest: AC96052-1Ru, Russet Burbank, and AOA95154-1 (all < 53%).
‣ Carton Yield (100 to 50 Count (7 to 18 oz US#1 Tubers))
Highest: CO97138-7Ru, A95409-1, and AO96164-1 (all > 370 CWT/A).
(Compare to Russet Norkotah at 271 CWT/A).
Lowest: AC96052-1Ru and Russet Burbank (< 187 CWT/A).
‣ Gross Return ($/acre)
Fresh Market Highest: CO97138-7Ru, AO96164-1 & AOA95155-7.
Fresh Market Lowest: AC96052-1Ru and Russet Burbank.
Process Market Highest: AO96164-1, AOA95155-7, TXA549-1Ru, A96104-2.
Process Market Lowest: AOTX95265-2ARu, AOTX95265-4Ru, & AC96052-1Ru.
Tuber Defects (% out of 40 Tubers, 8-12 oz.)
‣ External Defects
Notable Defects: Most entries were free of external defects; the highest occurrence of any
external defect was 2% of the total yield.
‣ Internal Defects
Notable Defects: All new clones were free of internal defects; Russet Burbank had 13% hollow
heart and internal brown spot. Ranger Russet had 3% internal brown spot.
‣ Bruise
Highest Blackspot: A95409-1 (63%) and AO96164-1 (60%).
Lowest Blackspot: AOA95154-1 and AOA95155-7 (0%).
Highest Shatter: AC96052-1Ru (92%) and AOA95155-7 (90%).
Lowest Shatter: AOTX95265-2ARu, R. Burbank, and AO96141-3 (all < 39%).
2007 Potato Cultivar Evaluations 83 WSU Potato Research Group