Nutrients

P Phosphorus
Mg Magnesium
Ca Calcium
S Sulphur
B Boron
Cu Copper
Fe Iron
Zn Zinc

Onions - Chlorosis

Symptoms
Under extreme deficiencies, leaves become completely chlorotic and bleached.

Reasons
Iron Deficiency Onions seem to be not susceptible to Fe deficiency.

Iron deficiency made worse by

  • High pH
  • Water logged soils
  • Calcareous soils
  • High copper, manganese or zinc soils

Iron is important for

  • Chlorophyll formation and photosynthesis
  • Improved yield and quality
  • High requirement