Prime-Ark Freedom
Fecha: 2022-03-18, actualizado: 2024-02-02
La primera mora comercial sin espinas de maduración temprana con bayas grandes y buen sabor
Rubus subgenus Rubus Watson 'Prime-Ark Freedom'
Derivado del cruce entre A-2301T x APF-49T
Denominación de la variedad 'APF-153T'
Las plantas son sin espinas
Los arbustos tienen estancado tallos
El peso del fruto es 10 gramo
Las bayas tienen un oblongo forma
Sólidos solubles - 10.2%
Acidez - 0.74%
Hábito de fructificación fructificación primocana (perenne)
La floración en los floricanes comienza en el cuarta semana del mes de Abril
Fecha de maduración (regular) - segunda semana del mes de Junio
La floración en los primocanes comienza en el tercera seman del mes de Junio
Fecha de maduración (remontante) - primera semana del mes de Agosto
La productividad es 2 kg por planta
La rusticidad al frío es bueno
País de origen Estados Unidos
La patente US PP26,990 P3 con fecha July 30, 2016
Situación actual - moderno o muy utilizado
Prime-Ark Freedom (también conocida como APF-153T) es la primera zarzamora de fructificación primocánica sin espinas lanzada comercialmente en el mundo. Es la cuarta de la línea de cultivares de mora de fruta primocánica de la marca Prime-Ark de la Universidad de Arkansas, tras el lanzamiento de Prime-Jan y Prime-Jim en 2004 y de Prime-Ark 45 en 2009. Todos los cultivares de fructificación de primocano lanzados anteriormente son espinosos.
Este tipo de mora fructifica en cañas de la temporada actual (primocanes) y en cañas de la segunda temporada (floricanes), proporcionando potencialmente dos temporadas de cultivo, tanto de frutas tradicionales de verano como de producción de finales de verano a otoño. Además de tener cañas sin espinas, esta variedad produce bayas muy grandes con buen sabor y es de maduración muy temprana en floricanes.
La fruta de Prime-Ark Freedom (Primer-Arco Libertad) no presenta un potencial de almacenamiento poscosecha excepcional, pero no se recomienda para el mercado de transporte debido a que las bayas tienen poca firmeza.
La longitud media de los primocanes es de unos 2-2,5 m. Los primocanes son poco vigorosos, sin espinas, muy erguidos. Las bayas de Prime-Ark Freedom son de gran tamaño, el peso medio de la baya es de unos 9-12 g. El color es negro brillante.
Cada planta produce grupos de bayas, como un racimo de uvas. La primera cosecha comienza a formarse en los primocanales a principios de junio y continúa de tres a cuatro semanas. Durante esta primera temporada de cosecha, la Prime-Ark Freedom produce intensamente floricanes, que pronto comienzan a florecer. Los floricanes no tienen espinas. Esta es la segunda temporada de cosecha, que se prolonga hasta mediados de octubre.
Una vez finalizada la segunda temporada de cosecha, Prime-Ark Freedom requiere un refugio invernal contra el viento frío del invierno y otras condiciones desfavorables, ya que la resistencia al frío declarada de esta variedad de mora es moderada, de unos 13..17 C bajo cero, pero los numerosos cultivadores señalan que la resistencia real es de unos 18..20 bajo cero cuando se utiliza una cubierta.
A las plantas les gusta la colocación en el sol, pero se observa que a altas temperaturas del aire (más de 31..33 C) la polinización se reduce cardinalmente.
¿Cómo cultivar la mora Prime-Ark Freedom?
2. Annual pre-emergence and postemergence herbicide applications;
3. Annual spring nitrogen fertilization (56 kg/ha) using ammonium nitrate;
4. Tipping primocanes at 1.1 m height two times each season usually in mid-June and late July or early August;
5. 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;
6. Dormant pruning of floricane-fruiting plants must include removing dead floricanes and pruning lateral branches to ~0.4 m in length;
7. Use drip irrigation;
8. A single application of iron sulfate in late fall and lime sulfur in early spring.
Documentos relevantes
Reseñas de la variedad Prime-Ark Freedom
What is the best blackberry plant to grow in the south/southeast United States? Prime Ark Freedom blackberry is the answer. This blackberry produces large berries and you get first year growth on first year primocanes. This is the perfect addition to your garden, farm, or homestead.
This is the 3rd and final video of my GROW YOUR BERRIES in a CONTAINER series. We’ll also take a small tour of the different varieties of Berry Bushes/plants that I have already PLANTED in a CONTAINER.
BLACKBERRY featured in this video is a thornless, Prime Arkansas Freedom BLACKBERRY. Is the first thornless BLACKBERRY variety from the University of Arkansas. Berries are medium to large fruit with excellent flavor that ripens in July the first year and again in Fall. Attracts POLLINATORS, including birds and butterflies. (Information from plant addicts).
I found a local big box nursery that had pallets of the Prime Ark Freedom variety and was able to pick through some of the better ones.
I only bought two one gallon containers but was able to pull out 5 individual plants, so a solid buy 2 get 3 free!
I have been experimenting with container Hugelkultur methods for a few years now and applying the system in a half wine barrel seems to work out well for berries. This particular garden is located in San Diego, Ca. zone 10B.
The first video from last year's production can be seen here.
I may be randomly posting more updates from this past summer from video that I recorded but did not post.
Heavy pruning on these seems to force a lot of new blooms/fruit. They actually act a lot like the mulberries in my climate. One thing I’ve learned is that they don’t need support if properly pruned and they can bear fruit as low as you’d like. Once a primocane has finished fruiting, I clip it back to a healthy-looking node. At that time, some of the floricanes will have probably started growing already.
I have very wet and humid weather most of the year. Anthracnose can be a problem in these conditions. My Natchez has been affected many times, and for whatever reason, it has never fruited. I’ve seen it occasionally on my PAF, but so far it seems quite resilient.
I’m no expert, but I believe this variety is a gem. Prime Ark Traveler is very similar, but not quite as prolific. I’m starting a ton of new cuttings to plant a large patch of these for our local market.
2nd the weather is insane. 2016 It rained 3 days non stop during flowering so this reduced the yield.
We had a huge drought at the end of 2016 so that will affect the 2017 yield as many floricanes died.
2016 was the first floricane crop and was 46lb of good quality fruit from 12 plants.
Humans and birds feeding on early ripening fruit was probably another 2lb.
So yield was 4lb per plant.
Observations:
This is a really low chill hour blackberry, my guess is its under 100 chill hours.
So for tropical areas that could never grow blackberries they can grow this variety.
The fruit is large but has large seeds so for processing a lot of the weight is seeds.
Specific to our climate the primacane flowering is just a disease and insect vector and not a benefit.
We are a no spray operation so we are trying to crop the floricanes for early fruit thus missing insect damage.
How many lbs of lower yields is worth having no thorns?
If you are the one working in the crop NO thorns is very very nice.
These are starting to flower now so we may see fruit at the end of April 2017.
Thank you all for your interest, input and feedback on this blackberry variety.
Thanks also to the hard work of Dr. John Clark and University of Arkansas for some interesting fruit varieties.
The primocanes started ripening in July last year and continued until November but I didn’t have many at a time. Enough to munch on. The production on the floricanes has at least tripled this year. Two years ago this May these were two inch root cuttings…
The first pic is of a primocane that slipped up on me and I tipped it last weekend and it’s already sending out laterals…well, straight up laterals. They get top heavy very quick.