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Key Facts

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Role of Nutrients by Top Fruit Growth Stage

Bud Burst - Start of Flowering

Nitrogen, Potassium and Magnesium – promote strong early growth of new plant tissues and maximum tree productivity
Phosphorus – maximize root development and flower cluster formation
Calcium – boost root and leaf growth and high yields
Boron – maximize pollination and strong flower development
Manganese – to maximize tissue growth
Zinc – to optimize bud burst and early leaf development

Fruit Set - Fruitlet

Nitrogen – in reduced amounts to maintain fruit fill
Potassium – minimize fruit disorders
Phosphorus – fruit set and development
Calcium – maintain good fruit quality and minimize fruit disorders
Magnesium – for reduced fruit drop
Boron – improve fruit set

Fruit Fill - Maturity

Nitrogen – in reduced amounts to maintain fruit fill and high sugars (excess can lead to rots and quality deterioration)
Potassium – maximize fruit weight, TSS levels in the fruit and minimize disorders and sunscald (but at levels that don’t compete with calcium)
Calcium – maintain good fruit firmness and storage quality
Manganese – alongside phosphorus will promote fruit coloration

Post Harvest

Nitrogen and Potassium – boost reserves for next season’s early growth
Phosphorus – maximize bud development and early rooting and new tissue growth in the following spring
Calcium – maintain high levels in the tree
Magnesium, Boron, and Zinc – replenish reserves and strengthen new buds

Top Fruit Nutrition

Select one of the links below to read more about improving this area of top fruit nutrition.

Top Fruit Yield
Top Fruit Quality
Top Fruit Health
Top Fruit Environment

Go to Top Fruit Nutrition

Top Fruit Crop Nutrition Programmes

Yara have developed recommended apple and pear crop nutrition programmes

Apple Crop Nutrition Programme
Pear Crop Nutrition Programme

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View Yara's Analytical Services Library for technical bulletins, advice and information on soil, leaf and other analyses

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