Zinc deficiency on orange-Citrus

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Nutrients

Citrus - Chlorosis

Symptoms
Symptoms of zinc deficiency appear on young leaves first. They show yellow patches in the interveinal areas (mottle leaf). Along the veins, an irregular green border remains. The youngest leaves look small and trim (little leaf) and are often upright.

Reasons
Zinc deficiency on leaves of orange Manganese deficiency causes similar symptoms.

Citrus - Chlorosis

Symptoms
Symptoms of zinc deficiency appear on young leaves first. They show yellow patches in the interveinal areas (mottle leaf). New leaves are significantly stunted and often occur in rosettes because the twig internodes are shortened. Twigs die back.

Reasons
Zinc deficiency on branches of orange Zinc deficiency is a widespread nutritional disorder of citrus.

Zinc deficiency on orange made worse by

Organic soils
High pH soils
Soils rich in phosphorus
Soils receiving high phosphorus application
Cold wet conditions

Zinc is important for

Combats chlorosis
Prevents premature leaf fall
Gives healthier greener trees
Improves resistance to cold weather and late frosts
Improves bud development, flowering and fruit set

Yara recommended fertilizers for Zinc

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.

YaraVita ZINTRAC

Citrus: 1-2 l/ha applied during spring flush and again during autumn flush. In both instances, repeat 10-14 days later where moderate to severe deficiency exists. NB: Maximum 0.5 l/ha on Grapefruit. Water Rate: 500-1000 l/ha.

YaraMila COMPLEX

Citrus: Apply 550-750 kg/ha in multiple applications from growth stage; new flush to fruit bulking/maturity. Refer to Yara crop program as a guide or contact your local Yara sales agronomist for advice.