| Researcher(s) |
Amanda Cook Ben Fleet Gurjeet Gill Neil king Ian Richter |
|---|---|
| Year(s) | 2019 |
| Contributor | SARDI Minnipa Agricultural Centre |
| Trial location(s) |
Minnipa, SA
|
| Related trials |
This field trial at Minnipa was undertaken to investigate factorial combinations of sowing time, seed rate and herbicides on the management of annual ryegrass in barley.
| Lead research organisation |
School of Agriculture, Food and Wine - The University of Adelaide |
|---|---|
| Host research organisation |
School of Agriculture, Food and Wine - The University of Adelaide |
| Trial funding source | GRDC 9175134 |
| Related program | N/A |
| Acknowledgments |
The authors thank Bruce and Kathryn Heddle for hosting the site. Malinee Thongmee and Hue Thi Dang (University of Adelaide), Fiona Tomney, Steve Jeffs, Bradley Hutchings and Katrina Brands (SARDI) for their technical input to the trial. We also acknowledge the investment from GRDC for the research into ‘Cultural management for weed control and maintenance of crop yield’ (9175134). |
| Other trial partners | SARDI Minnipa Agricultural Centre |
| Crop types | Cereal (Grain): Barley Weed: Ryegrass |
|---|---|
| Treatment type(s) |
|
| Trial type | Experimental |
| Trial design | Randomised,Replicated |
| Sow rate or Target density | 100, 150 and 200 seeds/m2 |
|---|---|
| Sow date | TOS 1: 4 May; TOS 2: 24 May |
| Harvest date | Unknown |
| Trial design method | SPD Split Plot Design |
| Plot size | 105m x 10m |
| Plot replication | 3 |
| Plot randomisation | Y |
| Fertiliser |
At sowing – DAP (18:20:0:0) @ 60 kg/ha |
| Herbicide |
Multiple- please see report |
| Sow rate or Target density | Not specified |
|---|---|
| Sow date | Not applicable |
| Harvest date | Not applicable |
| Trial design method | SPD Split Plot Design |
| Plot size | Not specified |
| Plot replication | 3 |
| Plot randomisation | Y |
| Fertiliser | Not specified |
| Herbicide | Not specified |
| # |
Treatment 1
|
Treatment 2
|
|---|---|---|
| 1 | █ Operation | █ Details |
| 2 | █ Location | █ Minnipa, SA |
| 3 | █ Seedbank soil cores | █ 11 April |
| 4 | █ Plot size | █ 1.5 m x 10 m |
| 5 | █ Seeding date | █ TOS 1: 4 May TOS 2: 24 May |
| 6 | █ Fertiliser | █ At sowing – DAP (18:20:0:0) @ 60 kg/ha |
| 7 | █ Variety | █ Compass barley |
| 8 | █ Seeding rate | █ 100 seeds/m2 150 seeds/m2 200 seeds/m2 |
| 9 | █ Herbicides | █ 4 May and 24 May (applied just before seeding) Boxer Gold 2.5 L/ha IBS Trifluralin 1.5 L/ha IBS Control (knockdown treatment only) |
| 10 | █ Trial design | █ split plot design with three replicates |
| 11 | █ Measurements | █ pre-sowing weed seedbank, crop density, weed density, ARG spike density, ARG seed production, wheat grain yield |
| # |
Treatment 1
|
Treatment 2
|
Treatment 3
|
|---|---|---|---|
| 1 | █ Â | █ Rainfall (mm) | |
| 2 | █ Month | █ 2019 | |
| 3 | █ Jan | █ 4.0 | |
| 4 | █ Feb | █ 1.2 | |
| 5 | █ Mar | █ 0.2 | |
| 6 | █ Apr | █ 11.0 | |
| 7 | █ May | █ 57.2 | |
| 8 | █ Jun | █ 56.4 | |
| 9 | █ Jul | █ 15.6 | |
| 10 | █ Aug | █ 19.2 | |
| 11 | █ Sep | █ 53.6 | |
| 12 | █ Oct | █ 3.4 | |
| 13 | █ Nov | █ 7.0 | |
| 14 | █ Dec | █ 6.4 | |
| 15 | █ Annual total | █ 235.2 | |
| 16 | █ GSR total | █ 216.4 |
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.
