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

  • New growth is healthy
  • Cold hardiness is improved
  • Flower number increases
  • Fruit are longer and are generally more intensely coloured
  • Fruit may mature earlier and have improved flavour
  • Yields are increased

Yara recommended fertilizers for Potassium



Apple: 5 l/ha at bud burst. Also, two to three applications of 2 to 3 l/ha at 10 to 14 day intervals starting at petal fall. A further application of 5 l/ha may also be applied post-harvest before leaf fall. Water rate: 500 l/ha.

Read more about YaraVita FOLIAR POTASH