Research and trials on the real cost of N application

Several recent experiments at ACRI, Narrabri have illustrated the fate of N fertiliser in irrigated cotton cropping.

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

We measured the emission of nitrous oxide (N2O) from irrigated cotton that had been fertilised at four rates of N.

techniques. In response, this project was commissioned to investigate the potential of reducing nutrients in irrigation drainage systems using in-line wetland technology and batter stabilisation.