| Researcher(s) |
Nicole Dimos (SPAA) Felicity Turner (Vision Ag) |
|---|---|
| Year(s) | 2010 |
| Contributor | Society of Precision Agriculture Australia |
| Trial location(s) |
Township, SA
|
To compare the effects and demonstrate the economic benefits that may result from the use of variable rate phosphorus applications by broad acre farmer trial.
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 |
| Sowing machinery |
3.8 ha plot size |
|---|---|
| Sow date | Not specified |
| Harvest date | Not specified |
| Plot size | Not specified |
| Plot replication | Not specified |
| Fertiliser |
DAP, Urea |
| Other trial notes |
The results indicate that the land owner may see economic benefit (as per Gross Margin) from the uptake of variable rate technology in paddocks with varying soil types such as this trial paddock. |
| # |
Treatment 1
|
Grain yield (t/ha) | Grain copper (mg/kg) | Grain zinc (mg/kg) | Grain manganese (mg/kg) |
|---|---|---|---|---|---|
| 1 | █ Zone 1 (Low yielding) - Rate 1 @ 26kg/ha DAP + 22kg/ha Urea | 2.427 | 3.26 | 1.8 | 15.61 |
| 2 | █ Zone 1 (Low yielding) - Rate 2 @ 55kg/ha DAP + 11kg/ha Urea | 2.558 | 4.38 | 1.68 | 18.56 |
| 3 | █ Zone 1 (Low yielding) - Rate 3 @ 83kg/ha DAP + 0kg/ha Urea | 2.565 | 2.78 | 1.49 | 16.29 |
| 4 | █ Zone 2 (High yielding ) - Rate 1 @ 26kg/ha DAP + 22kg/ha Urea | 2.499 | 2.39 | 1.48 | 13.3 |
| 5 | █ Zone 2 (High yielding) - Rate 2 @ 55kg/ha DAP + 11kg/ha Urea | 2.597 | 2.39 | 1.38 | 13.4 |
| 6 | █ Zone 2 (High yielding) - Rate 3 @ 83kg/ha DAP + 0kg/ha Urea | 2.9 | 2.89 | 1.31 | 15.16 |
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.
