Volume 53 Number 3 Article 24
Year 1999 Month 7
Title: Highbush Blueberry Crops in a Trial in Norway, 1988-1998
Authors: J. Oydvin and B. Oydvin
Abstract:
Two Vaccinium corymbosum cultivars, 'Northland' and 'Patriot,' were evaluated at As (60 degree
N) over the 11 years from 1988-98 after planting bushes spring 1983. All plants survived a minimum
temperature of -30°C during winter per year 1984/85. On average, earliest fruit was harvested August
20 and the number of harvests averaged 3.0. Starting in 1993, biennial bearing was more pronounced
for 'Northland' than for 'Patriot.' This trend for alternate bearing was broken in 1998 after an unusually warm July-September 1997. Based on one plant per square m, the total yield per year averaged
about 0.9 kg fruit per square m during the first 10 years of the trial for both cultivars.
However, in the
eleventh year 'Northland' produced 3.4 kg per square m, exceeding 'Patriot' by almost 50% in total
fruit yield.
Fruit size varied from year to year in a similar manner for both cultivars with 'Patriot' having an average of 2.38 g per fruit, while 'Northland fruit averaged 1.19 g.
Both cultivars were judged
to produce fresh fruit of acceptable quality.
These results are the first records of successful highbush
blueberry culture in Norway.
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