1999 Washington Red Regional Trial Postharvest Evaluation
Boiling
Clone After cooking Tuber  Average 
Sloughing Darkening Texture Flavor Center Rating
1 DARK RED NORLAND 2.0 4.7 3.3 3.7 5.0 18.7
2 RED LASODA 2.0 4.7 4.3 4.3 4.7 20.0
3 A79543-4R 2.0 4.7 3.3 3.7 4.3 18.0
4 AO92657-3R 1.3 4.7 3.0 3.7 4.0 16.7
5 CO89097-2 2.0 4.7 2.3 4.0 4.3 17.3
6 ND3196-1R 2.7 4.3 2.7 3.0 4.0 16.7
7 ND3574-5R 2.7 4.7 2.3 4.0 3.0 16.7
8 ND5084-3R 3.3 4.7 2.3 3.3 3.7 17.3
9 NDC4655-1 2.3 4.7 4.3 4.3 5.0 20.7
10 NDO2686-4R 3.7 4.7 2.7 3.0 4.7 18.7
11 NDO4300-1R 2.7 4.7 3.0 3.0 4.7 18.0
12 NDO4588-5R 2.7 4.7 4.0 3.3 4.3 19.0
13 NDO4592-3R 3.0 4.7 3.3 3.3 4.7 19.0
LSD .05 0.9 NS 1.8 NS 1.3 3.4
Average 2.5 4.6 3.2 3.6 4.3 18.2
Oven Baking
Clone After cooking Tuber  Skin Average 
Darkening Texture Flavor Center Rating Rating
1 DARK RED NORLAND 4.7 3.0 3.7 5.0 4.7 21.0
2 RED LASODA 5.0 3.7 4.3 4.7 4.7 22.3
3 A79543-4R 4.7 3.0 4.3 4.7 4.0 20.7
4 AO92657-3R 4.7 4.0 3.7 5.0 4.7 22.0
5 CO89097-2 4.7 2.3 2.3 4.3 4.3 18.0
6 ND3196-1R 4.0 2.3 3.0 3.0 4.7 17.0
7 ND3574-5R 4.7 3.0 2.0 5.0 4.7 19.3
8 ND5084-3R 4.7 4.0 4.3 5.0 4.7 22.7
9 NDC4655-1 4.7 2.7 2.7 4.7 3.7 18.3
10 NDO2686-4R 4.7 3.3 3.7 4.7 3.7 20.0
11 NDO4300-1R 4.3 3.0 3.3 4.3 4.7 19.7
12 NDO4588-5R 4.7 3.0 3.3 4.7 4.7 20.3
13 NDO4592-3R 4.7 4.3 3.3 5.0 4.7 22.0
LSD .05 NS 1.5 1.3 1.2 NS 2.9
Average 4.6 3.2 3.4 4.6 4.4 20.3
Microwave
Clone After cooking Tuber  Skin Average 
Darkening Texture Flavor Center Rating Rating
1 DARK RED NORLAND 4.5 3.0 4.0 5.0 5.0 21.5
2 RED LASODA 4.5 3.0 3.0 1.5 5.0 17.0
3 A79543-4R 4.5 4.5 4.5 1.5 5.0 20.0
4 AO92657-3R 4.5 4.0 3.5 5.0 5.0 22.0
5 CO89097-2 4.5 4.0 4.0 2.0 5.0 19.5
6 ND3196-1R 4.5 4.5 4.5 5.0 5.0 23.5
7 ND3574-5R 4.0 2.5 2.5 4.0 5.0 18.0
8 ND5084-3R 4.5 2.5 4.0 5.0 5.0 21.0
9 NDC4655-1 4.5 4.0 4.5 5.0 5.0 23.0
10 NDO2686-4R 4.5 4.0 3.0 3.5 5.0 20.0
11 NDO4300-1R 5.0 3.0 3.0 4.5 5.0 20.5
12 NDO4588-5R 5.0 4.5 3.5 5.0 5.0 23.0
13 NDO4592-3R 5.0 4.5 4.5 5.0 5.0 24.0
LSD .05 NS 2.0 1.1 1.4 NS 4.8
Average 4.6 3.7 3.7 4.0 5.0 21.0
NS= No Significant difference
Differences between clones that are equal to or greater than the LSD0.05 are considered significant
Planted: March 18
Harvested: July 22
Boiled: July 27
Baked: July 26
Microwaved: July 28