Guideline Index

Chapter 11. Introducing Fertilisers

11.5 Summary

  • A fertiliser is any nutrient or substance that promotes plant growth.
  • There are many individual types of fertilisers produced.
  • Nutrient sources can be organic or inorganic.
  • Fertiliser product lists and labels are required to show the product’s NPKS percentages.
  • The NPKS system refers to the percentage of N, P, K, and S in fertiliser products.
  • Fertiliser nutrients are mixed in with varying proportions with other less plant available forms; usually oxides.
  • Fertilisers should be purchased on the basis of their nutrient analyses and ability to overcome a specific nutrient deficiency.

Exercises 7 and 8