Plant density response of canola in low rainfall WA (13CH22)

2013

Research organisaton
Funding sources

Trial details

Researcher(s) Martin Harries
Mark Seymour
Year(s) 2013
Contributor Department of Agriculture and Food WA
Trial location(s) Mullewa, WA
Plant density response of canola in low rainfall WA (13CH22) locations
Aims

To investigate the plant density response to yield and oil content of TT and RR hybrid canola in comparison with open-pollinated canola

Key messages

In stressed conditions canola yields and gross margins were reduced at plant densities above 20 plants/m².

Despite being higher yielding and producing higher oil than CB Telfer TT, the higher seed costs of hybrid triazine tolerant variety Hyola 450TT resulted in lower gross margins.

Hybrid RoundupReady cultivar Hyola 404RR produced the highest yields and oil at Mullewa in 2013. 

Despite higher upfront costs Hyola 404RR also produced the highest gross margins.

Lead research organisation Department of Agriculture and Food WA
Host research organisation N/A
Trial funding source GRDC DAW00227
Trial funding source DAFWA DAW00227
Related program Tactical Break Crop Agronomy
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 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)
  • Crop: Variety
  • Sowing: Rate
Trial type Experimental
Trial design Replicated

Mullewa 2013

Sow rate or Target density 5, 10, 15, 20, 30, 40, 60 or 80 plants/m²
Sow date 9 May 2013
Harvest date Not specified
Plot size Not specified
Plot replication 3
Paddock history Wheat 2012, lupins 1 t/ha 2011, wheat 2010, lupins 2009, wheat 2008
Fertiliser

Fertiliser (kg/ha) 70 kg/h of Agstar Extra at seeding. 60 kg/ha of Urea, 400 kg/ha of gypsum (17% Ca, 14% S) topdressed over whole site 14/5/13.

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
Mullewa, WA Loamy sand
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Mullewa, WA Tenosol
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 Mullewa WA
2013 124.6mm
2012 113.4mm
2011 178.4mm
2010 118.9mm
2009 129.4mm
2008 159.9mm
2007 129.0mm
2006 135.0mm
2005 142.0mm
2004 137.4mm
2003 128.7mm
2002 129.3mm
2001 120.3mm
2000 162.7mm
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

Mullewa WA 2013


Observed climate information

Rainfall trial gsr (mm) 171mm

Derived climate information

Mullewa 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.