Role of Nutrients by Growth Phase in Stone Fruit


  • Nitrogen and Potassium – promote strong early growth of new plant tissues and maximum tree productivity
  • Phosphorus – maximize root development
  • Calcium - boost root and leaf growth and ensure high yields
  • Boron* and Zinc* – maximize bud burst and strong flower development
  • Manganese*, Magnesium and Iron – to optimize leaf condition

  • Nitrogen – to maintain leaf development
  • Potassium – maximize amounts in early fruit
  • Phosphorus – fruit set and development
  • Calcium – improve fruit quality and minimize fruit disorders
  • Magnesium, Sulfur and Micronutrients* – for good leaf quality and reduced fruit drop
  • Boron* and Zinc* – maximize growth of young fruit tissues

  • Nitrogen – in reduced amounts to maintain growth and sugar accumulation – excess can lead to rots and quality deterioration
  • Potassium – improve fruit weight, color and TSS levels in the fruit – but at levels that don’t compete with calcium
  • Calcium* – maintain fruit firmness, TSS and storage quality with minimal splitting
  • Phosphorus* – improve fruit color and reduce storage disorders
  • Magnesium* – maintain fruit firmness
  • Boron* alongside Copper* reduces splitting risks

  • Nitrogen and Potassium – boost reserves for next season’s early growth
  • Phosphorus – maximize bud development, early rooting and new tissue growth in the following spring
  • Calcium – maintain high levels in the tree and stimulate new root development after the harvest
  • Magnesium* Boron* and Zinc* – replenish reserves to maximize spring bud burst