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) Gibson, 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:

  1. Nitrogen applications at 12 weeks produced similar canola yield to earlier applications.
  2. OP TT and hybrid RR varieties had a similar response to nitrogen timing and rate.
  3. The OP TT variety ATR Stingray produced greater grain yields and returns than the hybrid RR variety Hyola 404R.
  4. Gross margins were maximised at lower rates of nitrogen than grain yield.
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 Chris Reichstein for hosting the trial and to the Esperance RSU for trial management.  Pam Burgess (DAFWA. Esperance) 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)
  • Crop: Variety
  • Fertiliser: Rate
Trial type Experimental
Trial design Replicated

Gibson 2013

Sow rate or Target density 40 plants/m²
Sow rate or Target density 40 plants/m²
Sow date 29 April 2013 29 April 2013
Harvest date Not specified
Plot size Not specified
Plot replication 3
Psuedoreplication Not specified
Fertiliser

Fertiliser (kg/ha):  100 kg/ha of Superphos at seeding, 120 kg/ha of Muriate of Potash topdressed over whole site 4 weeks after seeding.  400 kg/ha of gypsum (17% Ca, 14% S) topdressed over whole paddock in late March 2013.

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
Gibson, WA Loam
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Gibson, 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 Gibson WA
2013 557.8mm
2012 553.5mm
2011 549.1mm
2010 540.9mm
2009 552.3mm
2008 551.0mm
2007 554.9mm
2006 539.7mm
2005 545.9mm
2004 549.4mm
2003 566.0mm
2002 539.6mm
2001 548.2mm
2000 548.5mm
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

Gibson WA 2013


Observed climate information

Rainfall avg gsr (mm) 393mm

Derived climate information

Gibson 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 report and links

2013 trial report



Trial last modified: 28-05-2019 12:00pm AEST