YC Hop Varieties

CRYSTAL

Origin/History
Crystal is a triploid aroma-type cultivar, released for commercial production in 1993. It originates from a seedling selection (No. 8309-37) made at Corvallis in 1983 between the colchicine - induced tetraploid "Hallertau mf” (USDA 21397) and the diploid male downy mildew resistant aroma hop, USDA 21381M. Crystal is a half-sister of Mt. Hood and Liberty.

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

Maturity:	Medium-late
Yield:	1400 - 1700 kgs. per ha.
	1200 - 1500 lbs. per acre

Brewing Quality
Used for its aromatic properties.

Alpha acids:	4.0-6.0%
Beta acids:	5.0-6.7%
Alpha:Beta Ratio:	0.8

Cohumulone (% of alpha acids):	20-22%


Total Oil (Mls. per 100 grams):	0.8-2.1
Caryophyllene (as % of total oils):	4-8%
Farnesene (as % of total oils):	0.1%
Humulene (as % of total oils):	18-24%
Myrcene (as % of total oils):	40-65%

Storability is poor.