Timing of nitrogen in low rainfall canola

2014

Research organisaton
Funding source

Trial details

Researcher(s) Martin Harries
Mark Seymour
Sally Sprigg
Year(s) 2014
Contributor Department of Agriculture and Food WA
Trial location(s) Eradu, WA
Timing of nitrogen in low rainfall canola locations
Aims

To investigate the response to changing the nitrogen rate and changing the time of application.  Canola yield and oil will be measured and RR hybrids will be compared with open-pollinated TT types (OP TT).

Key messages
  • Grain yield responded to applied nitrogen up to 70 kg/ha.
  • Oil did not decrease as nitrogen rate increased, unlike what we have observed at other trials – probably a reflection of the continued grain yield response to N.
  • Positive gross margin returns were seen at 40-70 kg/ha of applied nitrogen.
  • Overall when nitrogen was applied did not alter the response to nitrogen – but avoid putting the majority of N at 12 weeks.
Lead research organisation Department of Agriculture and Food WA
Host research organisation N/A
Trial funding source GRDC DAW00227
Related program N/A
Acknowledgments

This trial is one of a series conducted throughout WA as part of the GRDC/DAFWA co-funded project “Tactical Break Crop Agronomy in Western Australia”.  Thanks to the Merredin RSU for trial management.  Laurie Maiolo provided technical assistance to ensure all treatments and measurements occurred in a timely and accurate fashion.


Other trial partners Not specified
Download the trial report to view additional trial information

Method

Crop type Oilseed: Canola
Treatment type(s)
  • Fertiliser: Rate
  • Fertiliser: Timing
Trial type Experimental
Trial design Randomised,Replicated,Blocked

Eradu 2014

Sow rate or Target density 30 plants/m²
Sow date 29 April 2014
Harvest date Not specified
Plot size Not specified
Plot replication 3
Download the trial report to view additional method/treatment information
Trial source data and summary not available
Check the trial report PDF for trial results.
Observed trial site soil information
Trial site soil testing
Not specified
Soil conditions
Trial site Soil texture
Eradu, WA Brown deep sand
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Eradu, WA Sodosol
Soil Moisture Source: BOM/ANU
Average amount of water stored in the soil profile during the year, estimated by the OzWALD model-data fusion system.
Year Eradu WA
2014 242.7mm
2013 249.3mm
2012 259.0mm
2011 304.2mm
2010 267.4mm
2009 294.2mm
2008 276.6mm
2007 194.8mm
2006 237.3mm
2005 262.6mm
2004 248.2mm
2003 203.8mm
2002 174.2mm
2001 198.9mm
2000 310.0mm
National soil grid Source: CSIRO/TERN
NOTE: National Soil Grid data is aggregated information for background information on the wider area
Actual soil values can vary significantly in a small area and the trial soil tests are the most relevant data where available

Soil properties

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Climate

Eradu WA 2014


Observed climate information

Rainfall avg gsr (mm) 255mm

Derived climate information

Eradu WA

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Some data on this site is sourced from the Bureau of Meteorology

SILO weather estimates sourced from https://www.longpaddock.qld.gov.au/silo/
Jeffrey, S.J., Carter, J.O., Moodie, K.B. and Beswick, A.R. (2001). Using spatial interpolation to construct a comprehensive archive of Australian climate data , Environmental Modelling and Software, Vol 16/4, pp 309-330. DOI: 10.1016/S1364-8152(01)00008-1.



Trial last modified: 28-05-2019 12:07pm AEST