Copper deficiency on orange-Citrus

Change crop

Nutrients

Citrus - Deformation

Symptoms
Copper deficient plants show dark green and enlarged leaves. Sterns are more slender than normal and appear flat and angular. Limbs die back and gumming may occur under new bark or on fruits. Symptoms are more prominent in young citrus.

Reasons
Copper deficiency on citrus Symptoms of copper deficiency are rarely seen where copper based fungicides are applied.

Citrus - Deformation

Symptoms
Stems of copper deficient plants are more slender than normal and appear flat and angular. Limbs die back and gumming may occur under new bark or on fruits. Symptoms are more prominent in young citrus.

Reasons
Copper deficiency on citrus Symptoms of copper deficiency are rarely seen where copper based fungicides are applied.

Copper deficiency on orange made worse by

Organic soils
Chalky soils
Sandy soils
Reclaimed heathland
High nitrogen applications

Copper is important for

Young trees come into production more rapidly
Vegetative growth is more even
Large foliage area (leaf number) maintained
Fruit mature better (flavour and juice levels enhanced)
Premature fruit drop prevented
Fruit skin-quality is much improved

Yara recommended fertilizers for Copper

YaraVita COPTRAC

Citrus: 200 mls / 100 litres water to give a maximum of 2 l/ha / application post harvest. Not to be used when either flowers or fruit are on the tree. Alternatively, 0.5 l/ha applied to both spring and autumn flushes. Water rate: 500 to 2000 l/ha.

YaraVita GRAMITREL

Citrus: 3 to 5 l/ha applied during spring flush and also during summer / autumn flush. Water rate: 500 to 1000 l/ha.