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.

2018 - 2020

Research organisations
Funding source

Trial details

Researcher(s) Mike Ashworth
Zhanglong Cao
Richard Devlin
Roberto Rocha
Orna Tippett
Contact email mike.ashworth@uwa.edu.au
Year(s) 2018 - 2020
Contributor School of Agriculture and Environment - The University of Western Australia
Trial location(s) Cunderdin, ACT
Avondale farm, WA
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

To determine the effect of factorial combinations of seeding rate, row spacing and pollination type on canola yield and wild radish fecundity.  

Key messages

The competitive ability of open-pollinated and hybrid canola varieties against wild radish is enhanced by increasing canola seeding rates. Wild radish seed production was not reduced when canola was seeded at a narrow row spacing.

Lead research organisation Australian Herbicide Resistance Initiative
Host research organisation N/A
Trial funding source GRDC UOA1707-005RTX
Related program N/A
Acknowledgments

This research was funded by the Grains Research Development Corporation of Australia (GRDC). We also thank Mr. Shane Baxter for his excellent support as a field research assistant.


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

Method

Crop types Oilseed: Canola Weed: Wild Raddish
Treatment type(s)
  • Crop : Variety
  • Sowing : Rate
  • Sowing : Row Spacing
Trial type Experimental
Trial design Randomised,Replicated,Blocked

Cunderdin 2018 Canola

Sow rate or Target density 20, 35 and 50 plants/m2
Sow date Unknown
Harvest date Unknown
Trial design method RCBD Randomised Complete Block Design
Plot size Not specified
Plot replication 3
Plot randomisation Y
Fertiliser

Pre emergent: 70 kg/ha Gusto Gold; 100 kg/ha Urea  

Post emergent: 100 L/ha UAN

 

Herbicide

Pre emergent: 2 L/ha Roundup Ultra Max;  1 L/ha propyzamide;  150 g/ha Lontrel (PSPE);  Other pre-em herbicides as per treatment list  

Post emergent: As per treatment list;  100 mL/ha Verdict (volunteer cereal management);  2 L/ha Reglone (23 Oct 2019) 

Fungicide

Seed treatment: 400 mL/100 kg-seed Maxim XL  

Pre emergent: 300 mL/ha Impact

Post emergent: 500 mL/ha Aviator Xpro  

Cunderdin 2018 Wild Raddish

Sow rate or Target density Not specified
Sow date Not applicable
Harvest date Not applicable
Trial design method RCBD Randomised Complete Block Design
Plot size Not specified
Plot replication 3
Plot randomisation Y
Fertiliser Not specified
Herbicide Not specified
Fungicide Not specified

Cunderdin 2019 Canola

Sow rate or Target density 20, 35 and 50 plants/m2
Sow date Unknown
Harvest date Unknown
Trial design method RCBD Randomised Complete Block Design
Plot size Not specified
Plot replication 3
Plot randomisation N
Fertiliser

Pre emergent: 70 kg/ha Gusto Gold; 100 kg/ha Urea  

Post emergent: 100 L/ha UAN

Herbicide

Pre emergent: 2 L/ha Roundup Ultra Max;  1 L/ha propyzamide;  150 g/ha Lontrel (PSPE);  Other pre-em herbicides as per treatment list  

Post emergent: As per treatment list;  100 mL/ha Verdict (volunteer cereal management);  2 L/ha Reglone (23 Oct 2019) 

Fungicide

Seed treatment: 400 mL/100 kg-seed Maxim XL  

Pre emergent: 300 mL/ha Impact

Post emergent: 500 mL/ha Aviator Xpro  

Cunderdin 2019 Wild Raddish

Sow rate or Target density Not specified
Sow date Not applicable
Harvest date Not applicable
Trial design method RCBD Randomised Complete Block Design
Plot size Not specified
Plot replication 3
Plot randomisation Y
Fertiliser Not specified
Herbicide Not specified
Fungicide Not specified

Avondale farm 2020 Canola

Sow rate or Target density 20, 35 and 50 plants/m2
Sow date 1 May 2020
Harvest date Unknown
Trial design method RCBD Randomised Complete Block Design
Plot size Not specified
Plot replication 3
Plot randomisation Y
Fertiliser

Pre emergent: 70 kg/ha Gusto Gold; 100 kg/ha Urea  

Post emergent: 100 L/ha UAN

Herbicide

Pre emergent: 2 L/ha Roundup Ultra Max;  1 L/ha propyzamide;  150 g/ha Lontrel (PSPE);  Other pre-em herbicides as per treatment list  

Post emergent: As per treatment list;  100 mL/ha Verdict (volunteer cereal management);  2 L/ha Reglone (23 Oct 2019) 

Fungicide

Seed treatment: 400 mL/100 kg-seed Maxim XL  

Pre emergent: 300 mL/ha Impact

Post emergent: 500 mL/ha Aviator Xpro  

Avondale farm 2020 Wild Raddish

Sow rate or Target density Not specified
Sow date Not applicable
Harvest date Not applicable
Trial design method RCBD Randomised Complete Block Design
Plot size Not specified
Plot replication 3
Plot randomisation Y
Fertiliser Not specified
Herbicide Not specified
Fungicide 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
Avondale farm, WA Not specified
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Cunderdin, ACT Sodosol
Avondale farm, WA Sodosol

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 WA

Avondale farm WA

Cunderdin WA

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Avondale farm 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

2020 trial report



Trial last modified: 10-10-2025 17:49pm AEST