The interaction between seeding rate and row spacing of hybrid and open pollinated canola (Brassica napus) varieties on wild radish (Raphanus raphanistrum) growth and seed production.

2019

Research organisatons
Funding source

Trial details

Researcher(s) Mike Ashworth
Contact email mike.ashworth@uwa.edu.au
Year(s) 2019
Contributor School of Agriculture and Environment - The University of Western Australia
Trial location(s) Cunderdin, ACT
The interaction between seeding rate and row spacing of hybrid and open pollinated canola (Brassica napus) varieties on wild radish (Raphanus raphanistrum) growth and seed production. locations
Aims

This trial was located at Cunderdin in the grainbelt of Western Australia and investigated combinations of canola variety (Hybrid or open pollinated), crop row spacing (25 or 50cm) and canola seeding rate (20, 35 or 50 plants/m2) on wild radish (WR) competitiveness and seed production.

Key messages

This trial found that WR establishment from this seed was reduced in hybrid canola treatments seeded at narrower 25 cm row spacing. Decreasing crop row spacing from 50 to 25cm and increasing canola seeding rate from 20 to 50 plants/m2 reduced WR establishment in the absence of herbicides. At the Cunderdin site, WR seed production was reduced within hybrid variety treatments (Trophy) and when seeded at higher plant densities (50 plants/m2). However due to the low rainfall at the Miling site, no interactions were identified. (P>0.05). Canola yield in this study was increased in the open pollinated variety treatments (Bonito) especially when seeded at higher seeding rates (50 plants/m2). Interestingly however, canola seeded at the wider row spacing (50cm) consistently out yielded the corresponding variety and seeding rate combination at the narrower 25cm row spacing. This study conducted two trials at Cunderdin in 2018 and 2019. Multi-environment trial analysis for the combined data to be completed.
 

Lead research organisation Australian Herbicide Resistance Initiative
Host research organisation N/A
Trial funding source GRDC 9175134
Related program N/A
Acknowledgments

This research was funded by the Grains Research Development Corporation of Australia


Other trial partners Living Farm
Download the trial report to view additional trial information

Method

Crop type Oilseed: Canola
Treatment type(s)
  • Crop: Variety
  • Sowing: Rate
  • Sowing: Row Spacing
Trial type Experimental
Trial design Blocked

Cunderdin 2019

Sow date 11 May 2019
Harvest date Unknown
Plot size Not specified
Plot replication Not specified
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
Cunderdin, ACT Not specified
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Cunderdin, ACT 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 Cunderdin ACT
2019 465.1mm
2018 488.7mm
2017 487.1mm
2016 529.5mm
2015 521.4mm
2014 514.0mm
2013 495.6mm
2012 532.6mm
2011 518.9mm
2010 554.8mm
2009 505.6mm
2008 495.7mm
2007 453.3mm
2006 460.7mm
2005 525.9mm
2004 458.7mm
2003 439.3mm
2002 496.0mm
2001 510.7mm
2000 422.1mm
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

Derived climate information

No observed climate data available for this trial.
Derived climate data is determined from trial site location and national weather sources.

Cunderdin ACT

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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: 20-03-2023 15:11pm AEST