Role of nutrients by banana growth stages

Find out which nutrients are most important at different growth stages.


  • Nitrogen and Potassium – promote early growth of new plant tissue 
  • Phosphorus – maximize root development and provide a strong soil reserve for crop development 
  • Calcium – boost root and leaf growth and ensure high yields 
  • Magnesium – fuel energy transfer within the developing tissues 
  • Sulfur – maximize growth through protein formation 
  • Macronutrients – to ensure tissue growth is not limited

Vegetative growth

  • Nitrogen and potassium – maintain plant growth in the built up to flowering (80% of all potassium should be applied before flowering) 
  • Calcium – maximize reserves in the build up to reproductive development to provide good fruit firmness, peel integrity and transport and storage quality with minimal disease 
  • Sulfur – maximize growth through protein formation 
  • Magnesium – boost chlorophyll activity and N-uptake 
  • Micronutrients – maximum requirements for growth peak at this time


  • Nitrogen and potassium - to maintain growth during this critical phase 
  • Phosphorus – for strong flower production 
  • Calcium – in reduced amounts to maximize supplies to the fruit as it starts to form 
  • Boron and Zinc – to ensure good flowering with minimal disorders 
  • Micronutrients – when tissue analysis confirms deficiencies

Fruit fill - harvest

  • Nitrogen – in reduced amounts to maintain growth and fruit fill 
  • Potassium – for good sugar to starch conversion and to maximize pulp weight, fruit size, TSS levels and vitamin C content 
  • Calcium – for good skin finish and fruit quality 
  • Magnesium – for high yields and bunch weights