Aim and objectives On average about one third of applied nitrogen is lost which costs the cotton industry $32 million each year.

Drip irrigation/fertigation (“advanced fertigation”, “open hydroponics”) is being adopted by

the Australian citrus industry. Hardware sophistication and the complexity of management

Fertigation is being increasingly adopted by citrus producers as an alternative to traditional approaches to supplying fertilisers to trees.

An open hydroponics system aims to increase productivity by high frequency application of irrigation water and nutrients to the soil. Such a system is sometimes also called advanced fertigation.

The delivery of dissolved mineral fertilisers to the roots of crops in the field using irrigation water is known as 'fertigation'.