YC Hop Varieties | Sterling

STERLING

Origin/History
Sterling is an aroma cultivar, a diploid seedling made in 1990 with a 21522 female plant and a 21361 male plant. Its parentage is 1/2 Saazer, 1/4 Cascade, 1/8 64035M (unknown German aroma X open pollination),1/16 Brewers Gold, 1/32 Early Green, and 1/32 unknown.

Agronomics
Sterling is resistant or at least tolerant to the current race of Powdery Mildew. No aphid or mite infestation was observed on Sterling test plots.

Maturity:	Early
Yield:	1650-1860 kgs. per ha.
	1400-1600 lbs. per acre

Brewing Quality
Used for its aromatic properties, similar to Saaz.

Alpha acids:	4.5-5.0%
Beta acids:	5.0-6.0%
Alpha:Beta Ratio:	0.8

Cohumulone (% of alpha acids):	21-23%


Total Oil (Mls. per 100 grams):	0.6-1.0
Caryophyllene (as % of total oils):	20-22%
Farnesene (as % of total oils):	13-15%
Humulene (as % of total oils):	6-8%
Myrcene (as % of total oils):	44-48%

Storability is fair to good.