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

YaraTera CHELATE 1089

Citrus: Apply 3 - 5 kg/ha during the growing season through the irrigation water.

YaraTera CHELATE 1090

Citrus: Apply 3 - 5 kg/ha during the growing season through the irrigation water.

YaraVita CALTRAC BZ

Citrus: 5 l/ha from fruit set until 6 weeks before harvest at 10 to 14 day intervals. Water rate: 500 l/ha minimum. Alternatively, 150 mls / 100 l from fruit set until 6 weeks before harvest at 10 to 14 day intervals, based on a typical TRV of 2500 l/ha and a maximum TRV of 4000 l/ha.

YaraVita CROP BOOST

Citrus: 5 l/ha applied at 10 to 14 day intervals following fruit set. Water rate: 500 l/ha minimum. Alternatively, 125ml/100 litres applied at 10 to 14 day intervals following fruit set, based on a typical TRV of 2500 l/ha and a maximum TRV of 4000 l/ha.

YaraVita TRI-PHOLATE

Citrus: Apply 2 - 4 kg/ha during the growing season through the irrigation water. Alternatively, apply 0.5 kg/ha as a foliar spray. Repeat at 10 to 14 day intervals as necessary, with a maximum of six applications per season. Water rate: 200 l/ha.

YaraVita ZINTRAC 700

Citrus: 1 to 2 l/ha during spring flush and again during autumn flush. In both instances a repeat application 10-14 days later may be required where moderate to severe deficiency exists. Water rate: 500 l/ha minimum. Alternatively, 50 mls / 100 l during spring flush and again during autumn flush. In both instances a repeat application 10-14 days later may be required where moderate to severe deficiency exists, based on a typical TRV of 2500 l/ha and a maximum TRV of 4000 l/ha.