Broad nutrition resources are outlined in the Agronomists Toolkit. Specific nutrient categories are listed below:

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Copper

Constraint - Copper

Plant use

  • Copper is a micronutrient

  • Copper is required for the formation of enzymes for chlorophyll production and nutrient processing, for water and oxygen exchange, and is essential for pollen formation

  • Plant deficiencies are rare

Symptoms 

  • Deficient plants tend to wilt easily, and are stunted

  • Interveinal paleness develops between veins of older leaves and progresses until the whole plant appears pale green

  • Fully expanded leaves are thin and disc shaped with few marginal serrations

  • The growing point dies on severely deficient plants

Damage

  •  Deficiency can cause grain abortion and high yield losses

Management

A soil test or a plant tissue test should be used to confirm copper deficiency. Application of a small amount of copper based fertiliser every 3-6 years is sufficient for deficient soils. A foliar spray can help to reduce symptoms in the deficient crop if diagnosed and treated before flowering.

 
 

Links and Resources

DAFWA - Diagnosing copper deficiency in canola

Diagnosis, what to look for in paddock and plant, what else it could be, where does it occur, management strategies, and monitoring. Page last updated 2014.

DEPI VIC - What nutrients do plants require? Copper

Section 6.4.2. Plant uses of copper, deficiency symptoms, and recommendations for managing deficient soils. Page last updated 2013.

GRDC - Micronutrients and trace elements. Copper

4 page PDF. Key points, general introduction, crop demand and uptake, tissue testing, soil testing, visual symptoms, soilmapp,effects of soil type, and treatment. Published 2013.

IPNI - Canola 4R Guide. Copper

Page 19 of 21. Description, impact, contributing factors, and management. Published 2013.