| Researcher(s) |
Nicole Dimos (SPAA) Craig Jaeschke (SPAA) Grant Jaeschke (SPAA) Sam Trengove (Trengrove Consulting) Leighton Wilksch (Landmark) |
|---|---|
| Year(s) | 2010 |
| Contributor | Society of Precision Agriculture Australia |
| Trial location(s) |
Clare, SA
|
The objective of this GRDC / SPAA funded project is to increase the level of adoption of PA 'beyond guidance' by broadacre farmers. The project specifically aims to increase the level of adoption of variable rate (VR) by growers in the project to 30% by 2013.This goal will be achieved by demonstrating how to use PA tools to growers at a regional level and by increasing the skills of growers and industry in PA to a level where they can then use PA tools in their farming systems to achieve economic, environmental and social benefits.
| 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 (GRDC) |
| Other trial partners | Not specified |
| Crop type | Cereal (Grain): Wheat |
|---|---|
| Treatment type(s) |
|
| Trial type | Precision agriculture |
| Trial design | Not applicable |
| Sow rate or Target density | 70, 90 and 120kg/ha |
|---|---|
| Sowing machinery |
49 ha plot sozw |
| Sow date | 14 May 2010 14 May 2010 |
| Harvest date | Not specified |
| Plot size | Not specified |
| Plot replication | Not specified |
| Fertiliser |
N fertiliser applied at constant 15 kg/ha across all treatments |
| Other trial notes |
The trial was easy to implement by the grower with the as applied data recorded on the Topcon X20showing exactly where rates had been changed in the trial strips. In 2011 the Jaeschke's used he variable rate seed approach on a number of paddocks, targeting more seed to their problem weed areas. Typically rates were varied between 80 and 100kg/ha fr wheat seed. |
| # |
Treatment 1
|
Treatment 2
|
Head abundance (heads/m2) |
|---|---|---|---|
| 1 | █ High yield zone sown @ 70kg seed/ha | █ Ryegrass | 230 |
| 2 | █ High yield zone sown @ 12kg seed/ha | █ Ryegrass | 162 |
| 3 | █ High yield zone sown @ 70kg seed/ha | █ Wheat | 500 |
| 4 | █ High yield zone sown @ 12kg seed/ha | █ Wheat | 533 |
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.
