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Cultivar Characteristics

Potato cultivars

Avalanche

Physical properties

Avalanche potatoes has a very uniform tuber shape. They are round/oval shaped with a slightly russet skin that washes white with shallow eyes. The flesh of Avalanche tubers are white. The tubers, which are numerous and of even size, are produced deep in the ground with the result that no greening occurs.

The flower

The flower is distinctive and reminiscent of new potatoes in times past with a red violet colour.

Dormancy

Tubers of Avalanche are resistant to bruising and stores well due to the medium to long dormancy period.

Growth period

Avalanche is grown commercially in Europe, South Africa, and North America and is a high yielding early main crop variety with even sized tubers that set deep, resulting in no greening.

Avalanche tubers has a medium to long growth period (90 - 110 days from emergence to natural foliage die-back).

Resistance

Avalanche tubers has medium resistance to leafroll virus, medium to high resistance to Fusarium dry rot and resistance to bruising and splitting.

Susceptible

Avalanche tubers are susceptible to Blackleg/soft rot, potato virus X and Y and powdery scab. It has medium to low susceptability to Late Blight.

Variety owned

Licensee in South Africa – Tubertek (Pty) Ltd.

Most common use

The Avalanche’s maturity is mid-season and as a harvested crop, is very suitable for all round cooking and making fries. The principal culinary use of Avalanche is as a boiling potato for the fresh market. The texture is waxy and has little to no disintegration and discolouring when boiled.

BP1

Physical properties

The tubers of BP1 are oval and slightly flat shaped with shallow eyes and have white flesh and skin.

The flower

BP1 forms many flowers that are blue with snow-white edges.

Dormancy

The tuber rest period of the BP1 is short (50-70 days at room temperature from natural foliage death until sprouting). The rest period of progeny tubers are shortened considerably if the mother plants are exposed to heat and/or water strain during the growth season.

Growth period

BP1 is a strong upright grower that develops quickly and provides good foliage. The growth period is medium to long (90 - 110 days from emergence to natural foliage die-back).

BP1 tubers are sensitive to low temperatures and damage may occur during cold storage. Therefore, BP1 should preferably not be planted at temperatures lower than 4ºC and stored away from any air inlets.

Resistance

Immune to wart diseases.

Susceptible

Late Blight and Early Blight susceptible, controllable with spray program. Moderate susceptible to virus diseases and very susceptible common scab.

Variety owned

Open variety.

Most common use

BP1 potatoes are of a good eating quality and solid cooking type, however, tends to turn blue-grey to black after cooking. Due to the discoloration, this potato is not recommended for the use of chips and frozen chips. It is best used as a table potato with an average relative density (SG).

Buffelspoort (BP13)

Physical properties

Buffelspoort has round to oval tubers with shallow eyes and white skin and flesh.

The flower

Buffelspoort forms a considerable amount of flowers that are blue with white edges.

Dormancy

The tubers of the Buffelspoort have a medium dormancy period of 60-80 days at room temperature from natural foliage death until sprouting. The rest period of progeny tubers are shortened considerably if the mother plants are exposed to heat and or water strain during the growth season.

Growth period

Buffelspoort is a strong upright grower that develops quickly and provides good foliage. Its rest period is medium to short with 80-100 days from emergence to natural foliage die-back.

Susceptible

Highly susceptible to Late Blight and Early Blight. Highly susceptible to corky scab and moderatley susceptible to viral diseases.

Variety owned

Open variety.

Most common use

Buffelspoort potatoes are of good eating quality, not powdery/mealy and are a solid cooking type. It is a lovely table potato with an average relative density (SG) and is suitable for processing to chips while fresh. The quality weakens after 60-80 days after foliage death.

Fianna

Physical properties

Fianna potatoes are oval-shaped with a smooth to medium smooth skin that is pale yellow in colour. It has white flesh with shallow eyes.

The flower

Fianna plants have white flowers.

Dormancy

Fianna has a medium to long dormancy period. The tuber rest period is long – 70 - 90 days from natural foliage death until sprouting.

Growth period

Fianna is a fairly strong grower with good to dense foliage coverage. The plants are tall and stems erect with a medium to long growth period of 100 - 120 days from emergence to natural foliage die-back.

Resistance

Fianna has good resistance against Mosaic Virus.

Susceptible

Fianna is midly susceptible to Early Blight, Late Blight and Common scab.

Variety owned

Licensee in South Africa– First Potato Dynamics.

Most common use

Fianna potatoes are fairly firm to floury. With a high relative density (SG) it is suitable for processing to chips and frozen chips. The big advantage of this variety is that it can be used for the fresh market and processing. The good internal quality of the tubers weakens gradually after natural foliage death.

Hertha

Physical properties

Hertha plants are tall and semi-erect to spreading. They have weakly pigmented stems, prominent wings and very slightly swollen nodes.

The leaves are medium green and open with midribs and petioles that are not pigmented. The tubers are round/oval to round shaped with a smooth, yellow skin and a light yellow flesh. They have shallow eyes that are few to intermediate in number, predominantly apical and have very slightly prominent eyebrows.

The flower

Hertha has numerous, medium to large corolla that are white with a medium to very prominent star, has a yellow-orange anther and non-pigmented flower buds.

Dormancy

With a good storability, Hertha has a medium dormancy period of 40 – 50 days.

Growth period

Hertha potatoes have a medium to long growth period of about 90 - 110 days from emergence to natural foliage die-back.

This high-yielding variety is suitable for all types of soil. The foliage development is rather quick and gives good soil cover.

Resistance

Hertha has a moderate resistance to virus diseases and common scab.

Susceptible

Hertha is moderately susceptible for bruising and internal black spot (warm tubers before grading to prevent internal black spot). Late Blight and Early Blight susceptibility is medium but it is controllable with a spray program. Careful harvesting is desirable and good skin set is necessary.

Variety owned

Open variety.

Most common use

Hertha potatoes are good for boiling, baking, chipping and especially French-frying with its high dry matter. No trace of discoloration.

Mnandi

Physical properties

Mnandi plants are tall, have erect stems, develop rapidly and give good to dense foliage cover. The tubers are oval with a smooth, pale-yellow skin and flesh, and have shallow eyes.

The flower

Mnandi plants carry many snow-white flowers.

Dormancy

The tubers of the Mnandi are good all-rounders with a medium to long dormancy period of about 70 days from burn off.

Growth period

Mnandi has a medium to long growth period of 90-110 days from emergence to natural foliage die-back. It has a high yield potential and is very stable over various locations and seasons.

Resistance

Mnandi shows good resistance against Early Blight , Late Blight, Potato leaf roll Virus and PVY and medium resistant to Common scab.

Susceptible

Mnandi has low susceptibility to Blackleg due to environmental conditions.

Variety owned

Open variety.

Most common use

Mnandi potatoes are a floury cooking type of good eating quality. It has poor dry matter content and is not well suited for processing.

Up To Date (UTD)

Physical properties

Up To Date potatoes are oval, slightly flat tubers with shallow eyes. The skin is white and the flesh is cream in colour.

Up To Date plants are tall, the stems semi-erect, develop rapidly and give good foliage coverage.

The flower

The plants of the Up to Date cultivar have a fair amount of flowers, depending on the season. The flower colour is a light purple-pink blush.

Dormancy

The Up to Date's tuber rest period is short (50-70 days from natural foliage death until sprouting). The rest period of progeny tubers are shortened considerably if the mother plants are exposed to heat and or water strain during the growth season.

Growth period

Up to date is a strong spreading grower. It develops quickly, provides good foliage and has a medium to long growth period of 90-110 days from emergence to natural foliage die-back.

Resistance

Low resistance to viral diseases and common scab. Moderate resistance to external damage.

Susceptible

Very susceptible to Early and Late Blight. Susceptible to wart diseases.

Variety owned

Open variety.

Most common use

Up to date potatoes are a powdery cooking type, good for all round use and a favourite amongst homemakers. It does not normally discolour after cooking and is wonderful for making French fries. The internal quality weakens within 30 days after natural foliage death.

Valor

Physical properties

Valor is a main crop variety producing high yields of large uniform oval to round shaped tubers with white to yellow skins and white to cream flesh.

The flower

The flowers of the Valor are a red violet colour.

Dormancy

Valor potatoes have medium term storability and a medium to long dormancy.

Growth period

Valor tubers have a medium to long growth period (90 - 110 days from emergence to natural foliage die-back).

Resistance

Valor is an ideal variety for organic production due to outstanding resistance to Blight and potato cyst Nematodes. It also has medium to good resistance to Viral diseases and good resistance to Common scab.

The variety exhibits good resistance to drought and is very tolerant to heat stress, which makes the it very suitable for growing in the desert lands throughout the world.

Susceptible

Susceptible to Potato virus Yo and Potato cyst Nematode: Globodera pallida Ps2/3,1.

Variety owned

Licensee in South Africa – RSA Potato Seed Exchange.

Most common use

Valor potatoes are excellent for baking and pre-packing quality and boasts with versatile cooking qualities.

Van Der Plank

Physical properties

Van Der Plank potatoes are oval, long to pear-shaped with shallow eyes. Both its skin and flesh are white in colour.

The flower

Few flowers are formed and the colour is pure white.

Dormancy

Van Der Plank has a long dormancy with its tuber rest period of 90-110 days from natural foliage death until sprouting. The rest period of progeny tubers are shortened considerably if the mother plants are exposed to heat and or water strain during the growth season.

Growth period

Van Der Plank is a fairly strong, upright grower that develops relatively quickly to medium height. It usually has a low number of stems per plant but provides good foliage and has a short to medium growth period (70 - 90 days from emergence to natural foliage die-back).

Sensitive to cold soil, Van Der Plank is not suitable for winter and early spring plantings except in areas with warmer winter months, like the Northern Province and parts of Mpumalanga and Kwazulu-Natal. Van Der Plank provides the best yield on heavier fertile soil.

Resistance

Moderate resistance to Late Blight, Leaf Roll and Mosaic virus.

Susceptible

Susceptible to Common Scab and Fusarium dry rot and very susceptible to Fusarium wilt.

Variety owned

Open variety.

Most common use

Van Der Plank potatoes are of a good eating quality with a solid cooking type that does not quench or discolour after cooking. With an average to low relative density (SG) and very low reducing sugar content, the potatoes are suitable for processing to fried chips and frozen chip products.

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