| Researcher(s) |
Owen Langley Matt Willis |
|---|---|
| Year(s) | 2017 |
| Contributor | Northern Agri Group |
| Trial location(s) |
Buntine,
Arrino, WA |
To compare the yield, profitability and level of weed control of different preemergent and early post-emergent herbicides in a wheat crop in the northern WA Wheatbelt by Bayer Crop Science and Syngenta
• All pre-emergent herbicides showed a positive $ROI when compared to the untreated control, however even the best treatments were allowing some annual ryegrass (ARG) panicles to set seed.
• The superior performance of the three Sakura treatments with their longer residual activity and the trifluralin + post-emergent Boxer Gold treatment (when applied under good conditions) highlighted the strength of a longer period of activity to
reduce annual ryegrass numbers.
• Post emergent applications of Boxer Gold are highly reliant on favourable conditions, as seen when comparing results at West Buntine and Arrino. When applied to small weeds in a moist soil profile, and a follow up rainfall event occurs – this can be a
successful method of weed control.
• Early weed control ratings (at 2-6 weeks after weed germination) are not reflective of the final number of weed seeds re-entering the seed bank.
| Lead research organisation | N/A |
|---|---|
| Host research organisation | N/A |
| Trial funding source | Bayer |
| Trial funding source | Syngenta |
| Related program | N/A |
| Acknowledgments |
Thanks to the Mike Dodd and James Dempster for hosting the trial sites. Thanks to Living Farm for sowing, spraying and harvesting the trials. Thanks to Rick Horbury (Bayer Crop Science) for setting up the trial and assisting throughout the season. |
| Other trial partners | Not specified |
| Crop type | Cereal (Grain): Wheat |
|---|---|
| Treatment type(s) |
|
| Trial type | Experimental |
| Trial design | Randomised,Replicated |
| Sow rate or Target density | 60 kg/ha |
|---|---|
| Sow date | 24 May 2017 |
| Harvest date | Not applicable |
| Plot size | 20m x 2m |
| Plot replication | 3 |
| Psuedoreplication | N |
| Plot randomisation | N |
| Fertiliser |
24/05/17: 100 kg/ha Gusto Gold + 50 kg/ha urea 15/08/17: 40 L/ha UAN |
| Sow rate or Target density | 60 kg/ha |
|---|---|
| Sow date | 18 May 2017 |
| Harvest date | Not applicable |
| Plot size | 20m x 2m |
| Plot replication | 3 |
| Psuedoreplication | N |
| Plot randomisation | Not specified |
| Fertiliser |
18/05/17: 100 kg/ha Gusto Gold + 50 kg/ha urea |
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.
