Nutrients required in each apple growth stage
Nutrients required in each apple 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 – increduced 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
Fertilizer suggestion
Base manure-NPK 15-15-15+Mg,Mn,Zn,B
Drip irrigation-NPK 19-19-19 or 20-20-20+Mg,Mn,Zn,B
