USDA ACCESSION NO.: 21525

SELECTION: Made by Prof. F. Osvald from a commercial Saazer hop (USDA 21077) near Destnice, Czechoslovakia, in the 1950's.

GENUS: Humulus

SPECIES: lupulus

CULTIVAR: Osvald Saazer Clone 72Y

PEDIGREE: unknown, probably a land race grown in certain areas of Czechoslovakia since the Middle Ages

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

ORIGIN: Hop Variety Collection at the Hop Research Institute Zalec, Yugoslavia

DATE RECEIVED: Spring 1988

METHOD RECEIVED: Rhizomes

AVAILABILITY: Commercial cultivar, no restrictions

REFERENCES: USDA Annual Report for Hop Research 1988, Table 3, p. 33.

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 London, New York 1991. p. 201.

MATURITY: Early

LEAF COLOR: Medium green

SEX: Female

DISEASES: Downy Mildew: tolerant to moderately resistant

Verticillium wilt: unknown

Viruses: infected with four hop viruses: Prunus Necrotic Ringspot, Apple Mosaic, Hop Mosaic, Hop Latent; free of American Hop Latent Virus.

VIGOR: Poor, especially in early spring when regrowth is sparse (sleepers)

YIELD: Poor to fair

SIDEARM LENGTH: 6-12 inches; hop frequently fails to reach the top of the trellis (18 ft)

ALPHA ACIDS: 3-4%

BETA ACIDS: 4-5%

COHUMULONE: 21-24%

STORAGE STABILITY: Fair

OIL: 0.5-0.8 ml/100 g; humulene 20-25%, H/C 3.36; contain about 10% farnesene

MAJOR TRAITS: Pleasant (noble) aroma suitable for production of super premium beers, mild bitterness, particularly suited for production of Pilsener type beers.

OTHER INFORMATION: Heat treatment and meristem tip culture by Dr. C.B. Skotland, Prosser, Washington in 1989 resulted in virus-free clones 72Y (USDA Accession No.21). Closely related to (perhaps identical) to USDA 21077.

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