Can Applying Nitrogen Fertiliser In The Fallow Period Increase Fertiliser Efficiency In Wheat?

GRDC - Maurie Street and Ben O’Brien, Grain Orana Alliance

Type: Research Paper
Knowledge level: Advanced

Farm Table says:

The authors of this paper note in the conclusion: “Overall, applying N fertiliser in the fallow periods did not consistently result in improved N efficiencies in terms of improved yields or grain quality over that of more conventional timings. However, some situations were observed where fallow applications out yielded topdressing timings, however the improved efficiency was tempered by the higher protein levels in the topdressing timings. Conversely there were a small number of cases where fallow application at high rates resulted in poorer outcomes than those of later N application timings”. Please access the full paper via the link below if this research interests you.

The take home messages from this GRDC funded research are below. Please access the full paper via the link below for methodology, references, acknowledgements and discussion.

Take home messages from the paper include:

  • Applying nitrogen (N) during the fallow period did not consistently improve the efficiency of applied N when compared to in-crop applications.
  • Applying N during the fallow period often did not result in any penalty when compared to in-crop applications.
  • Overwhelmingly, the greatest response in yields and protein was to the rate of N applied.
  • Growers should primarily focus on applying the most appropriate rate of N, with the timing a secondary concern.

 

 

2018 - Australia - GRDC - Maurie Street and Ben O’Brien, Grain Orana Alliance
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