| Researcher(s) |
Peter Hooper (Hart Field Site Group) Sam Kleemann (University of Adelaide) Sarah Noack (Hart Field Site Group) Christopher Preston (Hart Field Site Group) |
|---|---|
| Year(s) | 2014 |
| Contributor | Hart Field Site Group |
| Trial location(s) |
Hart, SA
|
To investigate the effect of early or delayed sowing on reduction of ryegrass numbers in combination with different pre-emergent herbicides
The early break to the 2014 season meant soil moisture and rainfall conditions were similar between ToS 1 and 2 and there was little variation in annual ryegrass control among pre-emergent herbicides tested. Grain yield and quality were not affected by pre-emergent herbicide however, there was a 1.22 t/ha yield penalty for the later ToS
| Lead research organisation |
Hart Field Site Group |
|---|---|
| Host research organisation |
Hart Field Site Group |
| Trial funding source | GRDC UA00149 |
| Related program | N/A |
| Acknowledgments |
The financial assistance of GRDC to undertake this research is gratefully acknowledged |
| Other trial partners | Not specified |
| Crop type | Cereal (Grain): Wheat |
|---|---|
| Treatment type(s) |
|
| Trial type | Experimental |
| Trial design | Randomised,Replicated,Blocked |
| Sow rate or Target density | Seed sown @ 80kg/ha |
|---|---|
| Sow date | 4 May 2014 4 May, 2 June 2014 |
| Harvest date | Not specified |
| Plot size | 1.75m x 10m |
| Plot replication | 3 |
| Fertiliser |
Seeding: 80kg/ha DAP, 8/7/14: 95L/ha UAN, 15/8/14: 100L/ha UAN |
| Other trial notes |
The wheat cultivar Scout was used in this trial. |
| @T1: ToS 1 (04-05-2014) | @T2: ToS 2 (02-06-2014) | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| # |
Treatment 1
|
Protein (%) | Screenings (%) | Grain yield (t/ha) | Test weight (kg/hL) | Ryegrass density (plants/m2) | Ryegrass heads (heads/m2) | Ryegrass density (plants/m2) | Ryegrass heads (heads/m2) |
| 1 | █ Sown 4 May | 10.2 | 3 | 4.15 | 81.6 | ||||
| 2 | █ Sown 2 June | 11.4 | 3 | 2.93 | 81.5 | ||||
| 3 | █ Untreated control | 59 | 350 | 77 | 164 | ||||
| 3 | █ IBS Boxer Gold @ 2.5L/ha | 21 | 74 | 12 | 35 | ||||
| 4 | █ IBS Sakura @ 118g/ha | 8 | 39 | 8 | 41 | ||||
| 4 | █ IBS Boxer Gold @ 2.0L/ha + triallate @ 2.0L/ha | 6 | 20 | 12 | 36 | ||||
| 5 | █ IBS Sakura @ 118g/ha + triallate @ 2.0L/ha | 3 | 32 | 3 | 9 | ||||
| 5 | █ IBS Boxer Gold @ 2.0L/ha + POST Boxer Gold @ 1.5L/ha | 8 | 71 | 6 | 14 | ||||
| 6 | █ | ||||||||
| 6 | █ | ||||||||
| 7 | █ | ||||||||
| 7 | █ | ||||||||
| 8 | █ | ||||||||
| 8 | █ | ||||||||
| Rainfall trial gsr (mm) | 280mm |
|---|
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.
