High Yielding Cereals and Canola – With a Good Start to the Season.

GRDC - Author: Tony Napier (NSW DPI)

Type: Research Paper
Knowledge level: Advanced

Farm Table says:

The authors of this paper note in the conclusion: “There has been a good start to the season so far, but it is very unlikely that there will be sufficient irrigation water during spring to fully irrigate crops. Nitrogen application rates and timing must be made in conjunction with how much water the crop is likely to get. Lower water allocations will mean lowering the target yield and lowering nitrogen topdressing rates. When high water allocations are available, growers can increase their nitrogen topdressing rates to achieve higher target yields. Growers can only target maximum yields in years of full irrigation allocations.”. Please access the full paper via the link below if this research interests you.

High Yielding Cereals and Canola – With a Good Start to the Season, What Management Practices Still Need to Be Considered?

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.

  • To develop a nitrogen topdressing strategy you need to have a target yield and get the timing right.
  • Allow approximately 40kg N/ha for every tonne of wheat grain yield and 75kg N/ha for every tonne of canola grain yield.
  • Stripe rust in wheat and sclerotinia in canola are significant diseases and growers will need to consider an appropriate fungicide strategy.

Table 1. An example nitrogen budget for a high yielding (8t/ha) irrigated wheat crop.

2020 - Australia - GRDC - Author: Tony Napier (NSW DPI)
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