Copper deficiency-Cauliflower

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Nutrients

Cauliflower - Deformation

Symptoms
Copper deficiency occurs very seldom. Affected plants show chlorosis on expanding and mature leaves. Heart necrosis might also be caused by Cu undersupply.

Reasons
Copper deficiency (Photo: Chinese cabbage)

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 COPTRAC

Cauliflower: 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.