blackberry Variety
Prime-Ark 45®
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Overview
Primocane-fruiting blackberry (can be double-cropped), thorny
Breeder: University of Arkansas, USA
Prime-Ark® 45 offers primocane fruiting with the option to double-crop, combining very firm, sweet berries and strong post-harvest performance, supporting extended-season production for fresh and processing markets.
Prime-Ark 45® Key Features
Seasonality
Primocane crop late summer–autumn, can double-crop
Size
Medium to large berries (7.9 g)
Colour
Glossy black fruit, elongated to blocky shape
Flavour
Sweet, juicy berries with good flavour
Comparative results
Compare key commercial characteristics across our blackberry genetics, including chill type, yield performance, fruit firmness, flavour profile, and market suitability. Use the dropdown below to select a trait and compare performance across our blackberry varieties.
Chill Requirement
Prime-Ark 45®
300 hours
Juhas
400–800 hours
Maryna
400–800 hours
Growth Habit
Prime-Ark 45®
Erect canes; thorny; well displayed berries for easy picking
Juhas
Spinefree; primocane-fruiting (tunnel pot production referenced for Polish climate)
Maryna
Spinefree; primocane-fruiting (tunnel pot production referenced for Polish climate)
Seasonality
Prime-Ark 45®
Primocane crop late summer–autumn; can also be double-cropped for late spring/early summer floricane production
Juhas
In Polish climate (pot production under tunnels): ~12 July (floricanes) and ~1 September (primocanes)
Maryna
In Polish climate (pot production under tunnels): ~30 June (floricanes) and ~2 September (primocanes)
Yield
Prime-Ark 45®
High yielding; yield potential 28 t/ha (comparative results)
Juhas
Primocane yield 0.6 kg/cane; floricane yield 0.4 kg/cane (Polish tunnel pot production)
Maryna
Primocane yield 0.5 kg/cane; floricane yield 1.1 kg/cane (Polish tunnel pot production)
Fruit Size
Prime-Ark 45®
Medium to large (berry weight 7.9 g in comparative results)
Juhas
Average fruit weight 7.1 g
Maryna
Average fruit weight 7.1 g
Fruit Colour
Prime-Ark 45®
Glossy black finish; elongated to blocky berries
Juhas
Black
Maryna
Black
Firmness
Prime-Ark 45®
Very firm; described as the firmest fruit compared with other primocanes (berry firmness 8.1 in comparative results)
Juhas
4.5 (1–5 scale)
Maryna
4.5 (1–5 scale)
Flavour
Prime-Ark 45®
Very sweet and juicy; good flavour (11.0% soluble solids/Brix in comparative results)
Juhas
SSC 14.5% Brix; acidity 1.0; ‘tastiness’ 14.1
Maryna
SSC 13.0% Brix; acidity 1.25; ‘tastiness’ 10.40
Shelf Life
Prime-Ark 45®
Excellent post-harvest characteristics with very good shipping potential
Juhas
high quality and post-harvest durability
Maryna
The fruit has a long shelf life, with good post-harvest quality.
Use
Prime-Ark 45®
Fresh market; also adapted to processed fruit market
Juhas
Suitable for fresh market production, especially under tunnel and pot systems. Excellent firmness and taste profile.
Maryna
Suitable for fresh markets with excellent firmness and post-harvest durability, making it ideal for long-distance shipping.
Prime-Ark 45® Enquiry
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