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PEDIGREE A diploid hybrid between Northern Brewer and TG seedling of unknown origin
YIELD 1300 to 3500 kg/ha
OTHER INFORMATION: Released in 1979, an aroma hop variety with high yield
  • To downy mildew - Medium
  • Rootstock to downy mildew - Weak
  • To powdery mildew - Good
BREWING QUALITY Aroma hop variety of high quality with excellent bitterness and aroma
BREEDING PROPERTIES Bobek is a diploid hybrid between Northern Brewer and TG seedling of unknown origin. It is a medium late variety, its optimal picking time in Slovenia being between August 28 and September 5. The plants have form of a dense cylinder or basket, thin and markedly branched lateral shoots, with characteristically short internodes, so that the bloom set can be well over the average. The vines are thin, rough, of green - purple - grayish color. The leaves are small, of deep green color, with typically dense venation. The rootstock is susceptible to downy mildew, the leaves are resistant, the cones slightly susceptible. The expected yield is about 3500 kg/ha. It has a well developed root system. It is grown on moderately deep and deep clay soil. It is grown in Slovenia. Large planting distance is required. The recommended pruning time in Slovenia is between April 1 and 10. An average cone is 20 mm long, the average weight of 100 dry cones is 12 g. They are small, of round shape, dense, of green color and do not get shattered when picked by picking machine. The drying temperature does not exceed 65 C.
CHARACTERISTICAL INGREDIENTS AND BREWING QUALITY Bobek has an intense and pleasant hoppy aroma. It contains 2.5 - 7 % of Alpha-acids (28 - 34 %of Cohumulone). The ratio between Alpha and Beta is about 1. The essential oil content varies from 0.7 to 4.0 % of dry hops. The ratio between Alpha-Humulene and Beta-Caryophyllene in the essential oil is about 3. Bobek has good storage stability. Beer prepared with this variety has good organoleptical scores for its bitterness and aroma. It is worth mentioning that among all the hop varieties in Slovenia this one has the highest content of Beta-acids.
Bitter substances* Aroma substances*
Alpha acids 3.5-7 %
Beta acids 4.0-6.1%
Cohumulone1 28-34 %
Colupulone1 48-53 %
Total Oil2 0.7-4.0 %
Mycrene3 49-57 %
Alpha-Humulene3 13-19 %
Beta-Caryophyllene3 4-6 %
Farnesene3 4-7%
1 Cohumulone and Colupulone in % of Alpha and Beta Acids  2 Total oil in % of dry matter
3 Single components of total oil in relative % of total oil 
* Actual number varies by crop year due to weather patterns and a little by the farm also (based on micro-climate). Contact for specific numbers for a given year/order.
  Bobek Flavor Pentagram
      Older USDA Report on Bobek CAUTION: Accuracy of variety tested or data not verified.