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) Wittenoom Hills, 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:

  • Applying nitrogen 12 weeks after sowing had a similar effect as the same total nitrogen rates applied earlier.
  • Nitrogen had a minor effect on oil%, with rates above 50 kg N/ha tending to reduce oil.
  • Applying higher than 50 kg N/ha to ATR Stingray increased yield but was of little economic benefit. 
  • Grain yield of Hyola 404RR responded to 150 kg/ha of applied nitrogen, but gross margins were optimised at 75 kg N/ha.
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

Wittenoom Hills 2013

Sow rate or Target density 40 plants/m²
Sow date 26 April 2013 26th April 2013
Harvest date Not specified
Plot size Not specified
Plot replication 3
Fertiliser

Fertiliser (kg/ha): 100 kg/ha of Superphos 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
Wittenoom Hills, WA Loam
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Wittenoom Hills, 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 Wittenoom Hills WA
2013 605.5mm
2012 606.6mm
2011 566.5mm
2010 555.1mm
2009 599.3mm
2008 591.7mm
2007 603.3mm
2006 592.1mm
2005 576.3mm
2004 604.0mm
2003 626.4mm
2002 566.1mm
2001 548.1mm
2000 584.5mm
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

Wittenoom Hills WA 2013


Observed climate information

Rainfall avg gsr (mm) 262mm

Derived climate information

Wittenoom Hills 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 12:02pm AEST