Nitrogen deficiency on orange made worse by

  • Low or high pH soils
  • Sandy or light soils (leaching
  • ) Low organic matter
  • Drought conditions
  • High rainfall (leaching) or heavy irrigation
  • Addition or high levels of non-decomposed organic matter/manure (eg straw)
  • Fast growing crops

Nitrogen is important for

  • Foliage lusher and greener
  • Shoot growth vigour increased
  • Fruit set/crop load increased
  • Yield is increased
  • Juice quantity and quality improved (acidity and soluble solids increased)