| Researcher(s) |
Mike Ashworth Zhanglong Cao Richard Devlin Roberto Rocha Rebecca Smith |
|---|---|
| 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
|
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.
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 |
| Crop types | Oilseed: Canola Weed: Wild Raddish |
|---|---|
| Treatment type(s) |
|
| Trial type | Experimental |
| Trial design | Randomised,Replicated,Blocked |
| Sow rate or Target density | 20, 35 and 50 plants/m² |
|---|---|
| Sowing machinery |
Knife points and press wheels |
| Sow date | 11 May 2019 |
| Harvest date | Unknown |
| Trial design method | RCBD Randomised Complete Block Design |
| Plot size | Not specified |
| Plot replication | 3 |
| Plot randomisation | Y |
| Fertiliser |
Please refer to the trial report for details |
| 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)
|
| Insecticide |
Seed treatment: 1 L/100 kg-seed Cruiser Opti Pre emergent: 1 L/ha chlorpyrifos; 200 mL/ha bifenthrin Post-emergent 1 L/ha chlorpyrifos; 50 g/ha Transform; 300 mL/ha Affirm |
| Seed treatment | 400 mL/100 kg-seed Maxim XL |
| Sow rate or Target density | Not specified |
|---|---|
| Sowing machinery | 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 |
| Insecticide | Not specified |
| Seed treatment | Not specified |
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.
