Potassium deficiency made worse by

  • Acidic soils (low pH)
  • Sandy or light soils (leaching)
  • Drought conditions
  • High rainfall (leaching)
  • or heavy irrigation
  • Heavy clay (illite) soils
  • Soils with low K reserves
  • Magnesium rich soils

Potassium is important for

  • Improved yield and quality
  • Increased tuber size
  • Improved disease resistance

Yara recommended fertilisers for Potassium

YaraVita FOLIAR POTASH

YaraVita FOLIAR POTASH

Potatoes: One application of 10 l/ha or two applications of 5 l/ha during tuber bulking (as soon as first-formed tubers are 10mm in diameter). Allow 10 to 14 days between applications. A further application of 5 l/ha may be made following petiole analysis, during tuber bulking. Water rate: 200 l/ha.

Read more about YaraVita FOLIAR POTASH

YaraVita MAGPHOS K

YaraVita MAGPHOS K

Potatoes: To increase tuber number, 10 l/ha at tuber initiation (when 50% of the tip swellings are twice the diameter of the rest of the stolon). To increase tuber size a minimum of 2 applications of 5 l/ha or 1 to 2 applications of 10 l/ha during tuber bulking (as soon as first formed tubers are 10 mm in diameter). Allow 10-14 days between applications. Water rate: 200 l/ha

Read more about YaraVita MAGPHOS K