WSU CAHNRS

Washington State University

Potatoes at WSU

Stored at 48°F After Arrival

  PHOTOVOLT READING DIFFUSDA % REDUCING SUGAR SPROUTING
Clonestembudaveragertg §COLORstembudrtg(%)length (in)
Washington
1Ranger Russet34.641.337.94+6.700.60.55933/4"
2Russet Burbank33.741.937.84+8.500.70.5571/4"
3A94053-55354.753.95+3.600.40.45671/8"
4A95074-648.945.947.45+4.800.40.550
5A95109-131.837.534.63+6.701.20.74931/4"
6A95409-144.647.746.15+6.800.50.551001/4"
7AO96160-350.153.751.95+5.100.50.551003/4"
8AO96164-149.146.747.95+2.400.50.651001"
9AOA95154-149.948.749.35+6.700.50.551001/2"
10AOA95155-744.447.545.95+4.300.50.551001"
LSD 0.053.33.714
Average4446.545.35.600.60.576
Idaho
1Ranger Russet30.74437.44-13.501.40.54731/8"
2Russet Burbank24.842.233.53-17.511.80.840
3A94053-544.251.8485+7.600.50.450
4A95074-64246445+500.60.550
5A95109-1264133.53-15.111.70.84131/8"
6A95409-130.647.939.34-17.201.60.74601/8"
7AO96160-345.24846.65-12.900.90.65871/4"
8AO96164-136.944.640.85-12.101.20.74531/4"
9AOA95154-146.155.750.95-9.500.60.551001/4"
10AOA95155-740.453.947.15-13.500.80.551001/8"
LSD 0.053.45.819
Average36.747.542.112.401.10.649
Oregon
1Ranger Russet24.142.333.23-19.222.30.831001"
2Russet Burbank16.84430.42-27.2330.8371/8"
3A94053-529.548.138.84-18.611.90.640
4A95074-63145.338.14-14.401.50.540
5A95109-12135.928.42-1523.71.61471/4"
6A95409-118.834.626.72-15.8341.81531/2"
7AO96160-327.851.339.64-23.5120.74731"
8AO96164-13041.639.14-18.812.40.63871"
9AOA95154-121.345.833.53-24.523.10.731001"
10AOA95155-727.551.339.44-23.812.50.731001 1/4"
LSD 0.053.7720
Average24.84434.720.122.60.957
Date test performed, days @ 48°F:
WashingtonDec. 1469Dec. 1469Dec. 29
IdahoDec. 1669Dec. 1669Dec. 29
OregonDec. 1869Dec. 1869Dec. 29
rtg=ratingDIFF= Absolute difference between bud and stem photovolt reading.
§ Stem to bud differences of nine or greater (-) lose one point and differences of less than 9 (+) gain one point in the accumulated total postharvest rating.
Potatoes at WSU, PO Box 646414, Washington State University, Pullman WA 99164-6414, 509-335-9502
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