| Researcher(s) |
Nigel Wilhelm (SARDI) |
|---|---|
| Year(s) | 2017 |
| Contributor | SARDI Minnipa Agricultural Centre |
| Trial location(s) |
Minnipa Agricultural Centre, SA
|
| Related trials |
|
To focus on the impact of trafficking by heavy vehicles on crop production and soil condition, as well as monitoring how quickly LRZ soils will "self-repair" if heavy trafficking is stopped. Issues of implementing CTF and managing permanent wheel tracks are being addressed in other components of the project.
| Lead research organisation |
SARDI Minnipa Agricultural Centre |
|---|---|
| Host research organisation | N/A |
| Trial funding source | GRDC ACT00004 |
| Related program | N/A |
| Acknowledgments |
Thanks to MAC farm staff for the implementation and management of the R site and to Ian Richter, Brett Hay and Naomi Scholz for undertaking the monitoring of crop performance and soil condition. |
| Other trial partners | Not specified |
| Crop type | Hay: Vetch |
|---|---|
| Treatment type(s) |
|
| Trial type | Experimental |
| Trial design | Replicated |
| Sow rate or Target density | 50 kg/ha |
|---|---|
| Sowing machinery |
The R trials were designed and implemented to be teh same at all four sites. Each trial consisted of 5 treatments replicated 4 times:
|
| Sow date | 26 April 2017 |
| Harvest date | Not specified |
| Plot size | 50m X 3m |
| Plot replication | 4 |
| Fertiliser |
50 kg/ha DAP |
| # |
Treatment 1
|
Establishment plants (plants/m2) | Grain yield (kg/ha) | Depth of seeding (mm) | Hay biomass (kg/ha) | Maturity biomass ((kg shoots/ha)) |
|---|---|---|---|---|---|---|
| 1 | █ Control | 62 | 320 | 65 | 1376 | 664 |
| 2 | █ Single trafficking on dry soil | 46 | 306 | 64 | 1242 | 662 |
| 3 | █ Single trafficking on wet soil | 50 | 372 | 50 | 1796 | 744 |
| 4 | █ Multi trafficking on wet soil | 51 | 416 | 47 | 1938 | 843 |
| 5 | █ Ripping | 43 | 333 | 76 | 1090 | 670 |
| 6 | █ LSD (P=0.05) | ns | ns | 10 | ns |
| Rainfall avg ann (mm) | 325mm |
|---|---|
| Rainfall avg gsr (mm) | 241mm |
| Rainfall trial total (mm) | 282mm |
| Rainfall trial gsr (mm) | 155mm |
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.
