USDA ACCESSION NO.: 21525
SELECTION: Made by Prof. F. Osvald from a commercial Saazer hop (USDA 21077) near Destnice, Czechoslovakia, in the 1950's.
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.
LEAF COLOR: Medium green
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%
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.