Primocane-fruiting Blackberries: Potential for Extending Harvest Season and Production Regions

Strik, Bernadine C.; Thompson, E. G.

doi:10.21273/hortsci.44.1.23

Cited by 8 publications

(7 citation statements)

References 11 publications

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“…The majority of the culled fruit was considered unmarketable (too soft to ship) and therefore unsuitable for commercial production. Strik and Thompson (2009) report that quality of fruit harvested from the floricane crop of 'Prime-JimÒ' and 'Prime-JanÒ' is lower than that of fruit harvested from other floricane-fruiting cultivars. Although no formal postharvest assessments of the ''NC'' experimental cultivars were conducted, notes from harvest indicate that the majority of the culled fruit was soft and therefore not marketable.…”

Section: Resultsmentioning

confidence: 99%

“…Season extension techniques are used to advance or delay the fruiting season of many small fruit crops including raspberry (Rubus idaeus) and blackberry (Pritts, 2008;Pritts et al, 1992;Strik and Thompson, 2009;Strik et al, 2008). When rowcovers were applied over the rows of primocanefruiting raspberries in the early spring before primocane emergence, fruit production occurred up to 3 weeks earlier than in rows without rowcovers.…”

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confidence: 99%

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Performance of Primocane-fruiting Experimental Blackberry Cultivars in the Southern Appalachian Mountains

Fernandez¹,

Ballington²

2010

hortte

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Yield performance of primocane-fruiting experimental blackberry (Rubus spp.) cultivars from two breeding programs were evaluated in the southern Appalachian Mountains. The trial consisted of the nine experimental cultivars: NC 533, NC 534, NC 535, NC 537, NC 538, NC 539, APF-27, APF-46, and Prime-Jim®. In addition, rowcovers were applied to split plots in the spring to determine if harvest dates could be advanced. In 2007, five experimental cultivars had comparable high total yields (APF-27, APF-46, NC 535, NC 537, and NC 539), yet only three of these had comparable marketable yields (APF 27, APF-46, and NC 537). In 2008, APF-27 and APF-46 had significantly higher total yield (2234.5 and 2257.3 g/plant, respectively) and marketable yield (1611.2 and 1654.2 g/plant, respectively) than all other experimental cultivars. Rowcover treatments did not increase or decrease either total or marketable yield in any of the experimental cultivars in either year. In addition, rowcovers did not advance the date of 5% or 50% harvest in either year. On the basis of the conditions imposed in these studies, we determined that “APF” selections evaluated in this trial have higher second-year yield than “NC” selections, primocane-fruiting experimental cultivar yields are lower than yields commonly found with floricane-fruiting blackberries, and rowcovers as applied in this study are not a viable option for advancing harvest season of primocane-fruiting blackberries in the southern Appalachian Mountains.

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Section: Resultsmentioning

confidence: 99%

mentioning

confidence: 99%

Performance of Primocane-fruiting Experimental Blackberry Cultivars in the Southern Appalachian Mountains

Fernandez¹,

Ballington²

2010

hortte

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“…Primocane-fruiting blackberries may offer the advantage of extending the harvest into the fall and winter months, particularly in milder climates (average annual minimum temperature -12°C or greater; Strik and Thompson, 2009). Oliveira et al (1996Oliveira et al ( , 1998Oliveira et al ( , 2004 and Jordan and Ince (1986) have shown that harvest of primocane-fruiting raspberry can easily be delayed in production systems that include summer pruning of primocanes, tipping, and tunnel protection.…”

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confidence: 99%

High Tunnel versus Open Field: Management of Primocane-fruiting Blackberry Using Pruning and Tipping to Increase Yield and Extend the Fruiting Season

Thompson¹,

Strik²,

Finn³

et al. 2009

horts

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Primocane-fruiting blackberries (Rubus subgenus Rubus Watson) may offer opportunities for season extension and off-season fruit production, particularly in mild climates with protected culture. In May 2005, plants of ‘Prime-Jan’® were established at the Oregon State University–North Willamette Research and Extension Center, Aurora, OR. Half of the planting was established under a high tunnel and the remainder planted in an adjacent open field. In 2006 to 2007, primocanes were subjected to four treatments to promote branching and/or delay harvest: 1) all primocanes within the plot were cut to the ground when averaging 0.25 m tall, then later emerging canes soft-tipped when reaching 0.5 m tall (C0.25m/T0.5m); 2) all primocanes within the plot were cut to the ground when averaging 0.5 m tall, then later emerging canes soft-tipped when reaching 0.5 m (C0.5m/T0.5m); 3) primocanes double-tipped: all primocanes within the plot were soft-tipped when averaging 0.5 m tall with subsequent lateral branches then soft-tipped when reaching 0.5 m long (T0.5m/Tb0.5m); and 4) primocanes were soft-tipped when averaging 0.5 m tall (T0.5m; control). The tunnel was covered with plastic from 5 Sept. 2006 and 31 Aug. 2007, ≈1 to 2 weeks before harvest until the end of harvest to protect fruit from inclement weather. On average, fruit harvest began on 12 Sept. in the open field and tunnel, but lasted ≈3 weeks longer in the tunnel, ending on 16 Nov., on average. Primocanes that were double-tipped had nearly twice the flowers and fruit than canes that were soft-tipped only once (T0.5m; control). In the tunnel, cumulative yield of double-tipped primocanes averaged 10.7 t·ha−1 in 2006 and 19.3 t·ha−1 in 2007, a 267% and 159% increase compared with the control, respectively. On average, cumulative yield for all treatments was less in the open field than in the tunnel, although cultural systems could not be compared statistically. Harvest was not delayed in the C0.25m/T0.5m treatment in 2006 compared with the control and the double-tipped treatments; however, in 2007, harvest was delayed by 2 weeks in C0.25m/T0.5m. In contrast, harvest was delayed by ≈4 weeks when primocanes were cut to the ground at 0.5 m (C0.5m/T0.5m). Primocanes that were double-tipped produced heavier fruit than other treatments (33% heavier than the control, on average). Double-tipped primocanes did not have more ovules per flower, but had significantly more drupelets set compared with the control. In addition, plants growing under the tunnel tended to produce heavier fruit (32%, on average) than those grown in the open field. Harvest date affected fruit pH in 2006, but not in 2007. In 2006, fruit pH was highest in the early season. All other differences in fruit chemistry were not significant. The pruning and tipping systems used here increased yield and offered options for season extension.

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“…The parameters of TSS, TTA and pH were determined by macerating 10 g of fruit per site to obtain juice. The TSS In view of the situation described above, several alternative crops have been evaluated which, in addition to having lower water and cold winter requirements (Strik and Thompson, 2009;Segantini et al, 2015;Cera-Campos et al, 2019), allow the producer maintain and/or acquire an adequate economic income for their families (Parra-Quezada et al, 2008;El Yaacoubi et al, 2016), with the consequent generation of jobs and economic benefits as part of the implementation of the systems of production (Clark and Finn, 2014;Frias-Moreno et al, 2019). Among these alternatives are the blackberry (Rubus sp.…”

Section: Floweringmentioning

confidence: 99%

Vegetative Growth, Flowering and Attributes of Physicochemical Quality in Blackberry ‘Tupy’ Fruits Grown in Chihuahua, Mexico

Moreno-Robles

Jacobo-Cuellar

Pérez-Leal

et al. 2019

Not Bot Horti Agrobo

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The aim of this research was to evaluate the vegetative growth, flowering and some attributes of physicochemical quality in blackberry ‘Tupy’ fruits cultivated in Chihuahua, Mexico. The study was carried out in San Juanito and La Finca with twenty-five replications per site. The length and number of sprouts, flowering, total soluble solids (TSS), total titratable acidity (TTA), pH, colour, ascorbic acid (AA), total anthocyanins (TA), total phenols (TP) and antioxidant capacity (AC) were evaluated. San Juanito presented the blackberry plants with the longest sprout length (169.71 cm), but their number was similar to La Finca, which also showed statistical significance with respect to the minimum temperature range (-2.9 and -1.2 °C), which manifested itself in less accumulation of cold units (658) and degree days (886). The flowering event started at 108 Julian days (April 19) for San Juanito completely evading the occurrence of late frosts, while La Finca maintained a 10% risk. The fruits harvested in the Finca showed the highest content of TA (75.7 mg cyanid-3-glucosid 100 g-1), maintaining the fruit quality without changes for both sites. The results indicate that the environmental temperature conditions of San Juanito are suitable for vegetative growth and floral development, by completely avoiding the occurrence of late frosts and obtaining fruits with quality similar to that harvested in orchards with commercial production.

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Primocane-fruiting Blackberries: Potential for Extending Harvest Season and Production Regions

Cited by 8 publications

References 11 publications

Performance of Primocane-fruiting Experimental Blackberry Cultivars in the Southern Appalachian Mountains

Performance of Primocane-fruiting Experimental Blackberry Cultivars in the Southern Appalachian Mountains

High Tunnel versus Open Field: Management of Primocane-fruiting Blackberry Using Pruning and Tipping to Increase Yield and Extend the Fruiting Season

Vegetative Growth, Flowering and Attributes of Physicochemical Quality in Blackberry ‘Tupy’ Fruits Grown in Chihuahua, Mexico

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