USDA ACCESSION: 21527
SELECTION: Originated from the regional variety Ustecky krajovy by mass-selection and was registered in 1952.
PEDIGREE: Unknown, probably related to Saazer
PRIMARY SITE: USDA-ARS World Hop Cultivar Collection, OSU East Farm
DATE RECEIVED: Spring 1988
METHOD RECEIVED: Rhizomes
AVAILABILITY: No restrictions
REFERENCES: USDA Annual Report of Hop Investigations for 1988, pp. 33, 35, 36.
Rybacek, Vaclav. Hop Production (Developments in Crop Science 16). Elsevier Publishing Company, Amsterdam, New York. 1991. p.75, 76.
LEAF COLOR: Dark green
DISEASES: Downy Mildew: moderately susceptible
Verticillium wilt: unknown
Viruses: infected with all 5 major hop viruses
YIELD: Poor, under 600 lbs/acre in Corvallis test plots, probably higher in Czechoslovakia
SIDEARM LENGTH: 6-10 inches; plants frequently failed to reach the top of the trellis (18 ft).
ALPHA ACIDS: 4.5%
BETA ACIDS: 3.5%
COHUMULONE: 21%, colupulone 44%
STORAGE STABILITY: Unknown, probably similar to Saazer
OIL: Not yet analyzed, probably similar to Saazer
MAJOR TRAITS: Pleasant noble aroma, suitable for production of super-premium beers, mild bitterness, particularly suited for production of Pilsener beer; reddish stems.
OTHER INFORMATION: Grown commercially in Czechoslovakia; is believed to be a mixture of different biotypes, all originating from Saazer. Handled in the trade collectively under the trade name Saazer or Bohemian Early Red hop. According to Rybacek (1991) Blato is "one of the oldest authorized hopvarieties"in the Czech Republic (formerly Czechoslovakia).