| Researcher(s) |
Nicole Dimos (SPAA) Louise McIntish (YPASG) Peter Treloar (Precision Ag Services) |
|---|---|
| Year(s) | 2011 |
| Contributor | Society of Precision Agriculture Australia |
| Trial location(s) |
Urania, SA
|
Because there was no effect of fertiliser on the yield it meant any potential benefit from VR was greatly reduced. This can likely be put down to the high levels of soil N recorded at the start of 2011. The trial does suggest that this paddock was over fertilised as there was no significant loss of yield from a 40kg/ha reduction in urea in either trial.
| Lead research organisation |
Society of Precision Agriculture Australia |
|---|---|
| Host research organisation | N/A |
| Trial funding source | GRDC SPA000010 |
| Related program | N/A |
| Acknowledgments |
This project was funded by the Grains Research and Development Corporation (GRD) and run n conjunction with YP Alkaline Soils Group. |
| Other trial partners | Peter Trelor (Precision Ag Services, Minlaton), Louise McIntish (YPASG) |
| Crop type | Cereal (Grain): Wheat |
|---|---|
| Treatment type(s) |
|
| Trial type | Precision agriculture |
| Trial design | Not applicable |
| Sow date | 30 May 2011 |
|---|---|
| Harvest date | Not specified |
| Plot size | Not specified |
| Plot replication | Not specified |
| Fertiliser |
VR Urea on July 2011 |
| # |
Treatment 1
|
Grain yield (t/ha) |
|---|---|---|
| 1 | █ VR based on EM38: 60kg/ha urea | 5.18 |
| 2 | █ VR based on EM38: 100kg/ha urea | 5.03 |
| 3 | █ VR based on EM38: 140kg/ha urea | 4.76 |
| 4 | █ Control - flat rate @ 100kg/ha urea | 5.22 |
| 5 | █ Control - flat rate @ 100kg/ha urea | 5.06 |
| 6 | █ Control - flat rate @ 100kg/ha urea | 4.78 |
| 7 | █ VR based on 2009 Yield: 140kg/ha urea | 5.26 |
| 8 | █ VR based on 2009 Yield: 100kg/ha urea | 5 |
| 9 | █ VR based on 2009 Yield: 60kg/ha urea | 4.68 |
| 10 | █ Control - flat rate @ 100kg/ha urea | 5.33 |
| 11 | █ Control - flat rate @ 100kg/ha urea | 5.03 |
| 12 | █ Control - flat rate @ 100kg/ha urea | 4.73 |
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.
