YC Hop Varieties

ULTRA

Origin/History
Ultra is a triploid aroma-type cultivar, originated in 1983 from a cross between the colchicine-induced tetraploid Hallertau mf (USDA 21397) and the diploid Saazer-derived male genotype (USDA 21237m). Ultra is the half-sister to Mt. Hood, Liberty and Crystal. Its genetic composition is 4/6 Hallertau mf, 1/6 Saazer, and 1/6 unknown. This cultivar was released for commercial production in March, 1995.

Agronomics
Moderately tolerant to downy mildew, Peronospera, with good pickability of a small cone.

Maturity:	Medium
Yield:	1800-2000 kgs. per ha.
	1600-1800 lbs. per acre

Brewing Quality
Used for its aromatic properties similar to Hallertau.

Alpha acids:	4.5-5%
Beta acids:	3.6-4.7%
Alpha:Beta Ratio:	1.1

Cohumulone (% of alpha acids):	25-30%


Total Oil (Mls. per 100 grams):	0.8-1.2
Caryophyllene (as % of total oils):	10-15%
Farnesene (as % of total oils):	0%
Humulene (as % of total oils):	30-40%
Myrcene (as % of total oils):	25-35%

Storability is poor to fair.