SELECTION: no information
CULTIVAR: Hersbrucker E (obtained from England)
PEDIGREE: old German landrace
PRIMARY SITE: USDA/OSU Hop Research Farm, East Farm, Corvallis, OR
ORIGIN: Wye College, England
DATE RECEIVED: spring 1977
METHOD RECEIVED: rhizomes
AVAILBILITY: no restrictions
REFERENCES: Annual Report of Hop Research 1977, and later years
LEAF COLOR: dark green
DISEASES: Downy mildew: moderately susceptible
Powdery mildew: no information
Verticillium wilt: resdistant
Viruses: free of PNRV and ApMV at time of receipt
VIGOR: very good
YIELD: good to very good
SIDE ARM LENGTH: 20 to 40 inches, sometimes longer
ALPHA ACIDS: 4 - 6%
BETA ACIDS: 5 - 7%
COHUMULONE: 22 - 24%
STORAGE STABILITY: fair to poor, retained 58% of original alpha acids after 6 months room temperature storage
OIL: 0.63 ml/100 g. Humulene 29%; caryophyllene 9%; myrcene 46%; farnesene trace.
MAJOR TRAITS: high yield potential, pleasant European aroma characeristics, variable yield performance in Oregon commercial plots.
OTHER INFORMATION: Susceptible to downy mildew in Oregon commercial plots. Alpha acids variable and frequently on the low side. Poor storage stability of the soft resins. This hop , originally grown only in the Hersbruck mountains north of Munich, was planted extensively in the late 1970s in Germany to replace Hallertauer mittelfrueh, because of its higher resistance to verticillium wilt. The acreage has now (mid 1990s) dropped significantly because of newer German aroma hops with higher alpha acids potential.