Chinook Rhizome

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Hop Qualities

Chinook Rhizome Flavor

This green bine cultivar (W-421-38) was released in May 1985 in Washington State and Idaho from a cross between a Petham Golding and a USDA-selected male (63012M). Slightly spicy and very piney. Its alpha acid content ranges from 12 to 14%. Substitutes for bittering: Eroica, Galena, Nugget.(Reference)
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Hop Growers of America Information

Chinook was developed by the U.S.D.A. breeding program
in Washington State and released in 1985 as a high alpha
variety. It has a highly acceptable beer aroma profile with
smooth bitterness and full flavor.
Commercial Examples:
American style Pale Ales
Acid Range (Alpha %)
12–14% 12–14%
Beta Range
29–35% of alpha acids
Total Oils
1.7–2.7 Mls. per 100 grams dried hops
35–40% of total oils
9–11% of total oils
18–23% of total oils
Possible Substitutions
68% alpha acids remaining after 6 months storage at 20° C
1600–2000 kilos per hectare
1793.6–2242 kilos per hectare
lbs. per acre
Rhizome Growing Information
Good yielding, high alpha hop released through the USDA breeding program in 1985 by crossing a Petham Golding and a select US male. Matures mid to late season with good storage stability, reasonable tolerance to infection and mildew and highly tolerant to insects.

USDA Chinook Rhizome Information

SELECTION: Seedling selection from a cross made at Prosser, Wa, in 1974.
GENUS: Humulus
SPECIES: lupulus
PEDIGREE: Petham Golding x Brewer's Gold - Utah 526-4
68052 x 63012M
PRIMARY SITE: USDA World Hop Variety Collection, OSU East Farm
ORIGIN: Cross made by C. E. Zimmermann at Prosser, WA, in 1974
Selection tested as W421-38 and permanent USDA Accession No. assigned
in 1980.
DATE RECEIVED: Spring 1980
AVAILABILITY: Commercial cultivar, no restrictions
REFERENCES: Kenny, S. T., and C. E. Zimmermann. Registration of Chinook hop (Registration No. 15). Crop Sci. 26:196-197. 1986.
Romanko, R. R. In: Steiner's Guide to American Hops, 2nd. ed. 1986.
MATURITY: Medium to medium late
LEAF COLOR: Medium green
SEX: Female
DISEASES: Downy Mildew: moderately resistant
Verticillium wilt: resistant
Viruses: susceptible to hop mosaic virus
VIGOR: Very good
YIELD: 1800-2400 1bs/acre
moderately resistant
Verticillium wilt: resistant
Viruses: susceptible to hop mosaic virus
VIGOR: Very good
YIELD: 1800-2400 1bs/acre
SIDE ARM LENGTH: 24-40 inches
ALPHA ACIDS: 13.6 (5 year average: 13.9-15.3%)
BETA ACIDS: 3.9% (5-year average 3.6 to 4.5)
OIL: 1.83 ml/100 g (5-year range 1.24 to 2.63)
MAJOR TRAITS: High alpha-acids content, low beta, pleasant aroma
OTHER INFORMATION Hop is being used by a major brewer as a high-alpha/aroma hop primarily for bitterness addition. Adapted to Oregon, Washington and Idaho but grown now mostly in Washington. 1997 production: 3.69 million lbs..Considered to be a super-alpha hop by the trade.

Product Tags: • Good StorageHigh Insect ToleranceModerate Disease Resistance

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