| 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) |
Kojonup, WA
Miling, WA |
Trials located at Miling and Kojonup in the grainbelt of Western Australia investigated combinations of canola variety (hybrid or open pollinated), canola seeding rate (20, 35 or 50 plants/m2) and canola seed size (<1.8, >2.0mm diameter) on ARG management.
Annual ryegrass (ARG) establishment was reduced in hybrid canola treatments, treatments with increased seed size and higher seeding rates. However, no interaction between these factors existed. At the Kojonup site, ARG seed production was reduced by hybrid varieties (Trophy). Due to the low rainfall at the Miling site, no interaction between treatments were identified. Canola yield in this study was increased in the hybrid variety (Trophy) treatments especially at higher seeding rates (50 plants/m2). In the absence of ryegrass, increased canola seed size also increased canola yield. This study conducted two trials in 2018 (Mingenew and Cunderdin) and 2019 (Miling and Kojonup). Multi- environment trial analysis for the combined 2018 and 2019 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 | N/A |
| Other trial partners | Living Farm |
| Crop types | Oilseed: Canola Weed: Ryegrass |
|---|---|
| Treatment type(s) |
|
| Trial type | Experimental |
| Trial design | Blocked |
| Sow rate or Target density | 20, 35 and 50 plants/m2 |
|---|---|
| Sowing machinery |
Knife points and press wheels |
| Sow date | 14 May 2019 |
| Harvest date | Unknown |
| Trial design method | RCBD Randomised Complete Block Design |
| Plot size | Not specified |
| Plot replication | 3 |
| Plot randomisation | N |
| Fertiliser |
Please refer to the trial report for details |
| Herbicide |
Please refer to the trial report for details |
| Insecticide |
Seed treatment: 1 L/100kg-seed Cruiser Opti Pre emergent: 1 L/ha chlorpyrifos; 200 mL/ha bifenthrin Post emergent: 50 g/ha Transform; 300 mL/ha Affirm |
| Fungicide |
Seed treatment: 400 mL/100kg-seed Maxim XL |
| Sow rate or Target density | Not specified |
|---|---|
| Sowing machinery |
Knife points and press wheels |
| 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 | N |
| Fertiliser | Not specified |
| Herbicide | Not specified |
| Insecticide | Not specified |
| Fungicide | Not specified |
| Sow rate or Target density | 20, 35 and 50 plants/m2 |
|---|---|
| Sowing machinery |
Knife points and press wheels |
| Sow date | 3 May 2019 |
| Harvest date | Unknown |
| Trial design method | RCBD Randomised Complete Block Design |
| Plot size | Not specified |
| Plot replication | 3 |
| Plot randomisation | N |
| Fertiliser |
Please refer to the trial report for details |
| Herbicide |
Please refer to the trial report for details |
| Insecticide |
Seed treatment: 1 L/100kg-seed Cruiser Opti Pre emergent: 1 L/ha chlorpyrifos; 200 mL/ha bifenthrin Post emergent: 50 g/ha Transform; 300 mL/ha Affirm |
| Fungicide |
Seed treatment: 400 mL/100kg-seed Maxim XL |
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.
