Ulster Prince is an early maturing potato with a semi-erect to erect growth habit and white flowers. The tubers are long to oval with white to yellow skin and white to light yellow flesh, featuring shallow eyes. It has high yield potential with very large tubers but is susceptible to late blight and low resistance to common scab.
This variety is best for firm cooking (salad type) and has poor suitability for crisping and French fries. Ulster Prince is highly resistant to Potato Virus A but has low resistance to several pests and diseases.
Plant Characteristics
- Maturity: Early to very early
- Growth habit: Semi-erect to erect
- Foliage cover: Moderate to good
- Flower colour: White
- Flower frequency: Occasional to frequent
- Berries: Very rare
- Light sprout colour: Blue
Tuber Characteristics
- Tuber skin colour: White to yellow
- Tuber eye colour: Blue
- Primary tuber flesh colour: White to light yellow
- Tuber shape: Long to oval
- Tuber eye depth: Shallow
- Tuber skin texture: Smooth to very smooth
Tubering Characteristics
- Yield potential: High
- Tubers per plant: Few to many
- Tuber size: Very large
- Tuber shape uniformity: Uniform
- Internal rust spot: Very frequent
- Resistance to external damage: Susceptible
- Dormancy period: Short to medium
Utilisation Characteristics
- Cooking type: Firm (salad type)
- After cooking blackening: Little to none
- Taste: Moderate
- Crisp suitability: Poor
- French fry suitability: Poor
- Dry matter content: Low to high
- Starch content: Very low to medium
Resistance to Fungal Diseases
- Late blight on tubers: Low
- Late blight on foliage: Low
- Powdery scab (Spongospora subterranea): Low
- Wart (Synchytrium endobioticum): Field immune (Race 1)
- Gangrene (Phoma foveata): Low
- Dry rot (Fusarium spp.): Low
Resistance to Bacterial Diseases
- Common scab (Streptomyces scabies): Medium to high
- Blackleg (Erwinia spp.): Very low to low
- Potato virus A: Very high
- Potato virus X: Very low to low
- Potato virus Y (strain not specified): Low to high
- Potato leaf roll virus: Low to medium
- Tobacco rattle virus: Very low