USDA ACCESSION NO.: 21532

SELECTION: Clonal selection by Professor F. Osvald, Hop Research Institute Zatec (Saaz), Czechoslovakia in the 1950's

GENUS: Humulus

SPECIES: lupulus

CULTIVAR: Saazer Osvald clone 72C, probably identical to the original Saazer (USDA 21077)

PEDIGREE: Unknown, Czechoslovakian landrace grown in that country since the Middle Ages

PRIMARY SITE: USDA-ARS World Hop Cultivar Collection, OSU East Farm, Corvallis

ORIGIN: Czechoslovakia

DATE RECEIVED: Spring 1988 (from Ing. Robert Kellner, Zatec, Czechoslovakia)

METHOD RECEIVED: Rhizomes

AVAILABILITY: No restrictions, commercial cultivar

REFERENCES: USDA Annual Report and Data Summary of Hop Investigations 1988, p. 33 (Table 3).

Rybacek, Vaclav. Hop Production. Developments in Crop Science 16. Elsevier Publishing Company, Amsterdam/New York/Tokyo. 1991. p. 77.

Neve, R.A. Hops. Chapman and Hall Publishing Co. London, New York. 1991. p. 201.

MATURITY: Early

LEAF COLOR: Medium green

SEX: Female

DISEASES: Downy Mildew: tolerant to moderately resistant

Verticillium wilt: unknown, probably tolerant

Viruses: infected with Prunus Necrotic Ring spot, Apple Mosaic, Hop Mosaic and Hop Latent Virus

VIGOR: Poor, especially in early spring when sleepers (lack of re growth) are common

YIELD: Poor, less than 800 lbs/acre under commercial conditions

SIDEARM LENGTH: 6-10 inches; plants frequently fail to reach the top of the trellis (18 ft)

ALPHA ACIDS: 3-4%

BETA ACIDS: 4-5%

COHUMULONE: 21-24%

STORAGE STABILITY: Fair to good

OIL: 0.5-0.8 ml/100 g

MAJOR TRAITS: Pleasant "noble" aroma suited for production of super premium beers.

OTHER INFORMATION: Major export hop for Czechoslovakia; well regarded on world hop markets and traded at very high prices, probably related to availability. Imported to the United States for production of super premium beers; probably identical to USDA 21525 and other Saazer clones that are grown commercially in Czechoslovakia, such as Aromat, Sirem, Lucan, Blato, Zlatan, and others. A heat-treated clone (USDA 21538) is grown commercially in northern Idaho.

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