USDA ACCESSION NO.: 21015
SELECTION: Selected in the German Tettnang area from an old land race
CULTIVAR: Tettnanger, Schwetzinger, Deutscher Fruehhopfen
PRIMARY SITE: USDA World Hop cultivar collection, OSU East farm
ORIGIN: obtained from Dr. R.R. Romanko, SW Idaho Agr. Expt. Station, Parma, ID who brought it to the US via Coors Brewing Co., Golden, CO.
DATE RECEIVED: 1970
METHOD RECEIVED: rhizomes
AVAILABILITY: no restrictions, commercial variety
REFERENCES: USDA annual report of Hop Investigations for 1970, pp 11-12
Romanko R.R., 1973. In: Steiner's Guide to American hops, S.S. Steiner Inc., New York, NY p 33.
Kohlmann, H., and A. Kastner. 1975: Der Hopfen, p 34. Hopfenverlag Wolnzach, Germany.
LEAF COLOR: dark green
DISEASES: downy mildew: moderately resistant
Verticillium wilt: resistant
VIGOR: fair to good
YIELD: low to medium (1000 to 1400 lbs/acre)
SIDEARM LENGTH: 12 - 36 inches
ALPHA ACIDS: 4.5% (10-year range: 3.0 to 5.8%)
BETA ACIDS: 3.8% (10-year range: 2.8 to 5.3%)
STORAGE STABILITY: fair to good (retains 61% of original alpha acids after 6 months room temperature storage
OIL: 0.56 ml/100 g. (12 year range: 0.36 to 1.07). Humulene 20.4%; caryophyllene 6.2%; myrcene 40.6%; farnesene 11.3%. H/C ratio = 3.39
MAJOR TRAITS: European "noble" aroma characteristics desired by brewers worldwide for producing super premium beers; reddish hue on main vine, particularly where sidearm branch off. Ratio of alpha: beta near 1.0.
OTHER INFORMATION: Tettnanger acreage has expanded significantly in the US in recent years -called US Tettnanger (which however is not a true Tettnanger but similar to Fuggle). German Tettnanger is grown primarily in the Tettnang area of SW Germany and on a few acres in Switzerland across from lake Konstanz. This hop is thought to belong to the Saaz group of varieties and it commands premium prices on world hop markets.