US Liberty
Pedigree Cross between colchicine-induced tetraploid female hop cultivar Hallertau Mittelfrüh and aphid/downy mildew resistant male.
Maturity Early - midseason
Yield 1100 - 1900 kg./ha. or 1000 - 1700 lb./ac.
Growth Habit Columnar and quite vigorous
Disease Reaction Moderately resistant to downy mildew - no Verticillium wilt symptoms observed in test plots
Pickability Care needed when picking light fluffy cones
Drying/Baling Normal
Cone Structure Smallish, plump, quite dense cones
Quality
Luplin Moderate amounts, dark yellow in color
Aroma Mild and pleasant, quite fine, has a slightly spicy character
Alpha Acids 3.0 - 5.0% w/w
Beta Acids 3.0 - 4.0% w/w
Co-Humulone 24 - 30% of alpha acids
Storageability 35 - 55% alpha acids remaining after six (6) months stroage at 20ºC.
Total Oil 0.6 - 1.2 mls/100 grams
Myrcene 25 - 35% of whole oil
Humulene 35 - 40% of whole oil
Caryphyllene 9 - 12% of whole oil
Farnesene <1% of whole oil
General Trade Perception Aroma variety with close similarities to imported German aroma varieties, especially Hallertau
Possible Substitutions U.S. or German Hallertau, Tradition, Ultra, Mt. Hood
Beer Styles Lager, Pilsner, Bock, Wheat
Other Information Released in the U.S. in 1991. Of the four triploid Hallertau varieties released, Liberty most closely resembles the Hallertau cultivar