Rubus subgenus Rubus Watson 'Columbia Sunrise'
Originated from a cross of NZ 9629-1 x ORUS 1350-2
Variety denomination - 'Columbia Sunrise', tested as ORUS 3448-2
Plants are thornless
Bushes have trailing canes
Fruit weight is 6 g
Berries have a conical shape
Fruiting habit - floricane fruiting (summer-bearing)
Flowering on floricanes starts in the first week of May
Ripening date (regular) - third week of June
Productivity is 5 kg per plant
Soluble solids - 13%
Acidity - 1.83%
Cold hardiness is good
Heat tolerance is low
Country of origin - United States
Patent US PP29,367 P3 dated June 11, 2018
Current status - modern or widely used
The harvest season is identical to Columbia Star cultivar. Fruits are large, weight is about 8 g. Shape is conic. Drupelets are fairly uniformly sized, shaped and arranged, drupelet fertility excellent. Fresh fruit flavor is very good, sweet. Aroma is good, sweet-acidic balanced, typical of western blackberries. Yield is about 5 kg per plant. Very early ripening, thornless trailing blackberry with large, firm fruit with a very good sweet flavor and good yields.
The primocanes of Columbia Sunrise were as vigorous as those of Marion and Black Diamond varieties but were less vigorous than those of Columbia Star or Chester Thornless. Columbia Sunrise fruits are well suited for processing or local fresh market sales. When eaten, Columbia Sunrise fruit texture was rated very good but poorer than Columbia Star and Marion varieties, and much more desirable than Chester Thornless cultivar.
Winter hardiness and disease resistant is good. Also Columbia Star has low tolerance to heat and ultraviolet damage.
|Cultivar||Berry weight, g||Yield, kg/plant|
|Cultivar||Columbia Sunrise||Black Diamond||Marion||Columbia Star|
|Cultivar||Soluble solids, %||Titratable acidity, %||pH|
|First (5%)||Peak (50%)||Last (95%)|
|Columbia Sunrise||June 11||June 18||July 2|
|Black Diamond||June 18||June 29||July 3|
|Chester Thornless||July 18||August 3||August 24|
|Marion||June 23||July 2||July 12|
|Prime-Ark Freedom||August 20||August 27||Sept. 19|
|Prime-Ark Traveler||August 24||Sept. 3||Sept. 24|
2. Include annual spring nitrogen (N) fertilization (about 78 kg/ha) using ammonium nitrate (NH4NO3);
3. Postharvest removal of floricanes;
4. Sprinkler irrigation apply weekly during the growing season;
5. Training of primocanes to a two-wire-trellis;
6. A single application of liquid lime sulfur (94 L/ha) each spring at budbreak for control of anthracnose and copper hydroxide to control leaf and cane spot
7. Use sun shelters.