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Sterling


Cultivar Information

Flower type = Self-fertile
Berry color = Bronze
Year introduced = 1981
Variety protection = Unpatented

History

'Sterling' was released in 1981 by C. Williams, W. Nesbitt, and V. Underwood of the U.S.D.A. and N.C. State University. 'Sterling' was selected from the cross NC 50-55 x 'Magnolia'.


Comments

'Sterling' was notable in our trials for producing a very attractive light green colored grape with a smooth finish. Unfortunately, it was also notable for its very high fruit rot susceptibility. Berry size is not large enough for the fresh market, and disease susceptibility was too high to recommend it as a juice cultivar.


 


 

Average Berry Quality in Tifton, GA Trials

Cultivar

Berry weight (g)

Berry diameter (mm)

Soluble solids (%)

Sterling

8.4

24

13.3

Carlos

5.3

20

13.8

 

 


Cultivar Attributes in Tifton, GA Trials

Cultivar

Vine vigor

Leaf disease

Berry rot

% Full crop

Harvest period

Ripening

% Dry scar

Sterling

medium/high

moderate

high

100%

late

even

10%

Carlos

high

slight

high

90%

midseason

even

90%