USDA ACCESSION: 21527

CULTIVAR: Blato

SELECTION: Originated from the regional variety Ustecky krajovy by mass-selection and was registered in 1952.

GENUS: Humulus

SPECIES: lupulus

PEDIGREE: Unknown, probably related to Saazer

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

ORIGIN: Czechoslovakia

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.

MATURITY: Early

LEAF COLOR: Dark green

SEX: Female

DISEASES: Downy Mildew: moderately susceptible

Verticillium wilt: unknown

Viruses: infected with all 5 major hop viruses

VIGOR: Poor

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).

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