USDA ACCESSION No.: 21285

SELECTION: selected at Parma, ID by Dr. Bob Romanko. No specific information available but the hop is believed to be an open-pollinated seedling of Hallertaur mittelfrueh

GENUS: Humulus

SPECIES: lupulus

CULTIVAR: BOR 704, named after the location in the "Bone Yard" at Prosser, WA (row 7, plant Nr. 04) where it was planted after being transferred from Parma, ID

PEDIGREE: no specific information available

PRIMARY SITE: USDA/OSU Hop Research Farm, Corvallis, OR

ORIGIN: SW Irrigated Agriculture Research Center, Parma, ID

DATE RECEIVED: Spring 1981

METHOD RECEIVED: rhizomes

AVAILBILITY: no restrictions

REFERENCES: 1981 Annual Report of Hop Research, USDA/ARS (pages 29 - 30), and later years

MATURITY: early

LEAF COLOR: light green

SEX: female

DISEASES: Downy mildew: moderately susceptible

Powdery mildew: no information

Verticillium wilt: tolerant

Viruses: no information

VIGOR: fair to good

YIELD: fair to poor ( 900 to 1600 lbs/acre, but very variable)

SIDE ARM LENGTH: 12 to 30 inches, poor clustering

ALPHA ACIDS: 2 - 3 %

BETA ACIDS: 3 - 4 %

COHUMULONE: 16 - 20 %

STORAGE STABILITY: fair ; retained 67% of original alpha acids after 6 months room temperature storage

OIL: 0.65 ml/100 g. Humulene 46%; caryophyllene 13%; myrcene 21% farnesene trace.

MAJOR TRAITS: very low co-humulone content (sometimes as low as 14%); pleasant European aroma characteristics; ratio of Humulene:Caryophyllene 3.5, sometimes even higher

OTHER INFORMATION: low yield potential, low alpha acids content. This hop was used at Prosser, WA (Dr. Steve Kenny) in crosses to incoporate low cohumulone content into new progeny. A one acre commercial trial in the Yakima Valley gave unsatisfactory results and brewing trials were inconclusive.



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