Ostara

Plant: Medium size, semi-spreading habit, leafy type.

Stem: No pigmentation, with developed, wavy wings.

Leaf: Bright green, slightly divided, closed; large, oval leaflet (I = 1.82); semi-blistered leaf blade.

Flowering: Rarely abundant.

Fruiting: Very rare.

Yield of Ostara potato plant: 96% of Bintje

Sizing: Proportion of large tubers: high to very high

Leaf blight: susceptible

Tuber blight: slightly susceptible

Warty gall: not affected

Common scab: slightly susceptible

Virus X: N/A

Virus A: resistant

Virus Y: slightly susceptible

Curling: fairly susceptible

RO 1-4 nematode: no reports

Internal defects in Ostara potato tubers: Slightly susceptible to rust spots and hollow heart, fairly slightly susceptible to ash spots.

Sensitivity to sprouting: Moderately sensitive

Vegetative rest: Medium

Culinary quality: Fairly good cooking quality, culinary group B, slight blackening after cooking

Colouring when fried: Medium to fairly strong.

Dry matter content: Low

Storage capacity: Average

Early variety, productive, good tuberisation precocity. The skin becomes rough and scaly when mature.

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