Splitting of nitrogen in medium-high rainfall canola

2013

Research organisaton
Funding source

Trial details

Researcher(s) Mark Seymour
Year(s) 2013
Contributor Department of Agriculture and Food WA
Trial location(s) Eradu, WA
Splitting of nitrogen in medium-high 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

In this 2013 trial:

  • Increasing nitrogen fertiliser, over 100 kg N/ha, increased canola yields.
  • Nitrogen had no significant effect on oil%.
  • Splitting nitrogen applications had no effect on canola yield, oil or gross margins.
  • Hyola 404RR had a higher gross margin of $506/ha, compared with $436 for ATR Stingray (TT), in spite of the higher seed costs.
  • To get $2 for every $1 spent on nitrogen the economic optimum rates of nitrogen at this site in 2013    were:                                                                                                                                                                # 45 kg N/ha for ATR Stingray (TT OP).

                                       # 70 kg N/ha for Hyola 4040RR (RR hybrid).

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”.  Thanks to the Smart family for hosting the trials and to the Geraldton RSU for trial management.  Jo Walker (DAFWA. Geraldton) kindly 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 Replicated

Eradu 2013

Sow rate or Target density 40 Plants/m²
Sow date 6 May 2013 6th May 2013
Harvest date Not specified
Plot size Not specified
Plot replication 3
Fertiliser

Fertiliser (kg/ha):  80 kg/h of Bigphos + Mn at seeding, 120 kg/ha of Muriate of Potash and 400 kg/ha of gypsum (17% Ca, 14% S) topdressed over whole site 4 weeks after seeding.

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 Loamy 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
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 2013


Observed climate information

Rainfall avg gsr (mm) 301mm

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 12:01pm AEST