Fertigation involves applying fertilizer through irrigation systems like drip lines or sprinklers to deliver nutrients to crops. The use of fertigation has expanded to more crops as drip and micro-irrigation methods have advanced technologically. Treated wastewater can be used for fertigation to reduce dependence on freshwater and provide a constant water source, but should have secondary treatment to limit health risks.

3. • Fertigation means irrigation plus fertilization which can be
done through buried or surface drip-lines or through
sprinklers.
• Recent technological developments in the drip and micro-
irrigation methods have accelerated the adoption of
fertigation for a wider range of crops, including fruit trees.
• “To reduce dependence on freshwater and maintain a
constant source of irrigation water throughout the year,
waste waters of varying qualities can be used in agriculture.
• Generally, only waters that have had secondary treatment
(i.e. physical and biological treatment) should be used to
limit the risk of crop contamination and the health risk to
workers.