Rubus subgenus Rubus Watson 'Prime-Ark Traveler'
Originated from a cross of APF-49T x A-2293T
Variety denomination - 'APF-190T'
Plants are thornless
Bushes have erect canes
Fruit weight is 7 g
Berries have a oblong shape
Fruiting habit - primocane-fruiting (everbearing)
Begins to bloom in the first week of May
Harvest season starts in the second week of June
Secondary blooming in the third week of June
Second harvest season in the first week of August
Productivity is 2,6 kg per plant
Soluble solids - 11%
Acidity - 0.85%
Cold hardiness is moderate
Heat tolerance is low
Country of origin - United States
Patent US PP28,598 P3 dated November 06, 2017
Current status - cultivated (actual)
This blackberry fruits on current-season canes (primocanes) and on second-season canes (floricanes), potentially providing for two cropping seasons. In addition to having thornless canes, Prime-Ark Traveler produces high-quality berries of medium-large size with good flavor, and potential for shipping and postharvest storage.
Prime-Ark Freedom, a previous primocane-fruiting cultivar from Arkansas, combined thornlessness and primocane fruiting, but did not have shipping-quality fruit characteristics. Floricane yields of Prime-Ark Traveler are statistically similar to Prime-Ark 45, but the floricane yields of Prime-Ark Traveler are generally less.
Floricane mean first harvest date for Prime-Ark Traveler is the beginning of June, similar to Prime-Ark 45. Primocane first ripe fruit date ranged from the end of July to the beginning of August, that is earlier than Prime-Ark 45. Canes of Prime-Ark Traveler are erect, however, the plants should be grown with supporting trellis wires placed on either side of the plant row at ~ 1.3 m height to help support the canes, as the primocane crop can be produced on the more distal portion of the canes.
Fruits of Prime-Ark Traveler is elongated in shape and attractive with a glossy, black finish. Berry shape is usually uniform with fewer double and (or) misshapen fruits than that seen on Prime-Ark 45 and Prime-Ark Freedom, an occurrence thought to be related to summer heat on primocane bud and flower differentiation.
Average floricane berry weight of Prime-Ark Traveler ranges from 7 to 9 g, similar to Prime-Ark 45, Ouachita and Osage.
It will be very important in management of Prime-Ark Traveler that canes be double tipped to maximize yield and maintain primocane height (double-tip the primocanes first at 50 cm and then subsequent branches tipped at ~ 50 cm).
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2. Annual pre-emergence and postemergence herbicide applications;
3. Annual spring nitrogen fertilization (56 kg/ha) using ammonium nitrate;
4. Additional fertilization (23 kg/ha) after the floricane crop production is completed in July;
5. Tipping primocanes at 42 inch height two times each season usually in mid-June and late July or early August;
6. Dormant pruning of primocane-fruiting plants must include removing dead floricanes and removing primocane tissue to a point below the fruiting (flowering) area on the primocanes;
7. Dormant pruning of floricane-fruiting plants must include removing dead floricanes and pruning lateral branches to ~ 0.4 m in length;
8. Use drip irrigation;
9. A single application of iron sulfate in late fall (October) and lime sulfur (94 L/ha) at budbreak in early spring;
10. Plant spacing at least 0.6 m.