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The role of nutrients in each citrus growth stage

Nutrients for citrus

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Flowering:
Nitrogen – boosts yield and tree productivity.
Phosphorus – maintain long-term productivity.
Potassium – establish good early growth.
Calcium – to aid leaf growth, pollination and fruit set.

 

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Fruit Set
Nitrogen – maintains leaf growth, flowering and strong fruit set.
Potassium and Magnesium – continued strong growth.
Calcium provides good fruit productivity and quality.
Sulphur improves fruit set and fruit retention.
Zinc, Manganese and Iron – to maintain fruit yield and quality
(Mn and Zn should be applied with each leaf flush)
Boron – minimize fruit drop, prevent fruit deformities or storage problems from peel breakdown.

 

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Fruit Enlargement and Maturation
Nitrogen – maintains yields and improve skin thickness and fruit acidity.
Nickel – To ensure that Nitrogen is converted to Carbohydrates and Energy.
Potassium – maximizes fruit fill and fruit size, productivity, skin
quality and vitamin C content and reduces granulation and fruit
splitting.
Calcium – boosts leaf growth and tree vigour and reduces skin
disorders including fruit splitting and albedo breakdown.
Magnesium – maintains fruit fill, fruit size and condition.
Zinc – maintains fruit quality Molybdenum – improves juice content, fruit quality and provides a
thicker skin. Copper – prevents fruit corking. Manganese and Boron – maintains fruit yield.

 

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Post Harvest
Nitrogen – to encourage active flushes of foliage.
Phosphorus and Potassium – To maintain long-term tree
productivity.
Calcium – to maintain tree root health and productivity and to
encourage leaf flushes
Iron, Manganese and Zinc – when needed for post-harvest foliage
flush.

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