Copper Deficiency in Citrus | Yara United States

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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. 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
Calcareous 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® MANCOZIN™

Citrus: 1 to 2 pints/acre. During spring and autumn flushes. Water rate: 50 to 200 gallons/acre.