U.S. Patent PP21,374
Southern Highbush Blueberry Variety
Raven is a late-flowering, early leafing cultivar with good large fruit of good quality and flavor.
Cultivar name: (selection code FL05-627)
Recommended for Florida: no, too late for the Florida season
FL region best adapted to: none
Production system: deciduous
Hydrogen cyanamide: no data available
Machine Harvestability: no data yet
Per plant yields (Density 1,452-1,742 plants/acre):
o North-central FL (2019): 6.2 lbs/plant
Known disease susceptibility: none observed to date
Known insect damage susceptibility: none observed to date
Fruit quality data:
o Fruit firmness: 284 – 314 g/mm, average 310 g/mm, much higher than Emerald
o Berry Weight: 3.2 – 3.5 grams, average 3.4 grams, higher than Emerald
o Berry Diameter: 19.8 – 20.4 mm, average 20.0 mm, larger than Emerald
o Brix: 11.4 – 12.7, average 11.8, similar to Emerald
o Brix/Acid Ratio: 65.2 – 83.7, average 70.7, much higher than Emerald
o Fruit scar: medium and dry
o Wax/bloom: medium, similar to Emerald Fruit defects: none observed
o Flavor Score: 27.5 – reference Emerald (19.9), Kestrel (29.2)
o Aroma: low
Cultivars with overlapping timing of flowering: San Joaquin, Emerald, Farthing
Other information: Flowers later than many Florida blueberry cultivars. Early leafing pattern coincides well with its flowering time. Large berries cluster loosely on the plant, have low acidity and a mild flavor, with good texture and some aromatic characteristics, and maintain good firmness on the bush for a long time after maturity.
License availability: For a list of current nursery licensees in the USA, click here
Performance 2018-2019 Season
Fruit Quality and Yield
The following plots show the most important fruit quality traits and yield, across the season.
The vertical lines in the yield plots indicate when 10%, 50% and 90% of the harvest was achieved during the season.
Dotted lines indicate the desired values for new cultivars:
Berry weight greater than 2g
Fruit Diameter greater than 14mm
Firmness higher than 150g/mm
Brix higher than 10%
TTA less than 1%
Brix/TTA higher than 14 units
Warning: Yield plot coming from harvesting of two bushes. Values may seem overestimated as all the fruit from the bush is harvested, and because this is harvest yield and no packed yield. Use this data to compare among cultivars and no to predict potential yield on your farm.
Measurements are in grams (g). To convert from grams to pounds (lb) use the following formula:
lb of fruit per bush = (g of fruit) x (0.002204)