Copper deficiency - Cabbage

Symptoms
Leaves are rather elongated in shape and bent down. Their color is pale with broad white leaf veins. Plant habitus is loose, headforming inhibited.

Reasons
Copper deficiency Copper deficiencies are more common on organic or sandy soils and where excessive nitrogen rates have been applied.

Cabbage - Deformation

Symptoms
Leaves are rather elongated in shape and bent down. Their color is pale with broad white leaf veins. Plant habitus is loose, headforming inhibited.

Reasons
Copper deficiency Copper deficiencies are more common on organic or sandy soils and where excessive nitrogen rates have been applied.

Cabbage - Growth retardation

Symptoms
Stunted growth caused by Cu deficiency.

Reasons
Copper deficiency (right) Copper deficiencies are more common on organic or sandy soils and where excessive nitrogen rates have been applied.

Cabbage - Deformation

Symptoms
Leaves are rather elongated in shape and bent down. Their color is pale with broad white leaf veins. Plant habitus is loose, headforming inhibited.

Reasons
Copper deficiency (right) Copper deficiencies are more common on organic or sandy soils and where excessive nitrogen rates have been applied.

Copper deficiency made worse by

Organic soils
Chalky soils
Sandy soils
Reclaimed heathland
High nitrogen applications

Copper is important for

Lignin formation, chlorophyll performance and regulation of superoxide radicals
Necessary for blue pigment plastocyanin, seen in broccoli florets

Yara recommended fertilizers for Copper

YaraVita COPTREL 500

Cabbage: 0.5 l/ha applied at the 4 to 6 leaf stage. For moderate to severe deficiency, one or two repeat applications should be made at 10 to 14 day intervals. Water rate: 200 l/ha.