Iron deficiency

Constraint – Iron 

Plant use

  • Iron is a micronutrient 

  • Iron is associated with the production of chlorophyll and helps to carry oxygen

  • Iron is also involved in reactions that convert nitrates to ammonia 


  • Youngest leaves affected first

  • Chlorosis of leaves, with tips and margins yellowing last

  • Affected leaves curve upwards

  • Stunting and abnormal growth also occurs


Yield penalties can occur if left untreated


A soil test or a plant tissue test should be used to confirm iron deficiency. Managing soil pH so that pH is below 7 will increase the pool of available iron in the soil.

Links and Resources

DAFWA - Iron deficiency

General information on iron, what to look for in the paddock and the plant, what else it could be, where it occcurs, treatment, and monitoring.

DEPI VIC - What nutrients do plants require? Iron

6.4.5. Plant uses, deficiency symptoms, and soils at risk of iron deficiency. Page last updated 2013.