Vanderplank

VANDERPLANK

  • Fairly strong, upright, develops quite rapidly to a medium height. Usually a low number of haulms per tuber, with good leaf coverage.
  • Few pure white flowers.
  • Oval-oblong to pear-shaped with shallow eyes. Skin and flesh are white
    Agronomical Properties
    Growing period: Short (70 to 90 days).
    Yield:
    Average yield potential. Low yield potential under dryland cultivation
    (particularly with water stress at the beginning of the growing season).
    Tuber size distribution:
    Mostly medium and large, with a low percentage of small tubers, even under
    Unfavourable conditions.
    Tuber appearance: Regular. Tuber malformation does occur under unfavourable conditions (heat
    and/or water stress), but secondary growth very seldom occurs.
    Tuber dormancy: Long (90 to 110 days). Dormancy of progeny tubers is shortened with periods
    of heat and/or water stress during the growing season.
    General:
    Sensitive to cold soil, not suitable for winter and early spring plantings, except
    in areas with warmer winter months (Northern Province and Parts of Mpumalanga and KwaZulu-Natal.

    Consumer Properties
    Eating quality: Very good. Firm cooking type which does not slough or discolour after cooking.
    Processing quality:
    Suitable for processing. Average to low relative density (SG) and low reducing
    sugar content.
    Keeping quality:
    Very good under all cultivation conditions. Quality deteriorates very gradually,
    Allowing storage of tubers directly in the soil or in cold storage for long periods.

    Diseases
    Late blight: Moderate resistance.
    Early blight:
    Moderately susceptible.
    Virus diseases:
    Moderate field resistance to leaf roll and mosaic virus.
    Common scab: Susceptible.
    Fusarium dry rot: Susceptible.
    Fusarium wilt:
    Very susceptible.
    Physiological disorders:
    Internal brown spot and hallow heart seldom occur, even under unfavourable
    growing conditions