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Plant density in low rainfall canola

2013

Research organisation
Funding source
Department of Agriculture and Food WA
<abbr title='Grains Research and Development Corporation'>GRDC</abbr>

Trial details

Researcher(s) Mark Seymour
Year(s) 2013
Contributor Department of Agriculture and Food WA
Trial location(s) Salmon Gums, WA
Plant density in low rainfall canola 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

 

  • Grain yields of most canola varieties at Salmon Gums started to plateau at ~ 20 plants/m²
  • Taking into account the costs of increasing plant density we calculated the economic optimum for higher cost seed types such as RR and hybrid TT to be 25 plants/m² or less
  • Hyola 404RR had the flattest response indicating its yields were less affected by lower plant densities.
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 Osborne family 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
  • Sowing : Rate
Trial type Experimental
Trial design Replicated

Salmon Gums 2013

Sow rate or Target density 8 densities of 5, 10, 15, 20, 30, 40, 60, or 80 plants/m²
Sow date 17 April 2013 17 April 2013
Harvest date Not specified
Plot size Not specified
Plot replication 3
Fertiliser

Fertiliser (kg/ha) 99 kg/ha of Allstar at seeding (13.1%N, 14.8%P, 15%S, 0.1% Cu, 0.2% Zn, 7ppm Mo, 0.02% Mn), 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, 145 L/ha of UAN (32%N) at June 3.
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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
Salmon Gums, WA Sandy loam
Derived trial site soil information
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 Salmon Gums WA
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Climate

Salmon Gums WA 2013

Observed climate information

Rainfall avg gsr (mm) 206mm

Derived climate information

Salmon Gums 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 11:58am AEST