Researcher(s) |
Nicole Dimos (SPAA) Mike Mooney (Mallee Sustainable Farming Inc.) Peter Treloar (Precision Ag services) |
---|---|
Year(s) | 2011 |
Contributor | Society of Precision Agriculture Australia |
Trial location(s) |
Puringa-Murtho, SA
|
Variable rate fertiliser application has a real and profitable place in the Mallee when combined with good paddock science. The precision technology gives the ability to examine the yield data for many effects including other possible influencing factors such as elevation, slope aspect or orientation to the sun, and probably many others. Grain yield was recorded continuously during harvest and logged against GPS position. From the resultant yield map it was possible to isolate treatment strips and EM38 zones within these strips and determine the yield for individual strips and therefore treatments, and also where these treatments intersect with the paddock zones. Trial was statistically analysed and Table 1 above shows there was no significant difference between treatments.
Lead research organisation |
Society of Precision Agriculture Australia |
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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) and run in conjunction with Caring for our Country and Dept. Environment and Natural Resources |
Other trial partners | Mark and Sue Stoeckel, Growers, Bunyip Reach |
Crop type | Cereal (Grain): Wheat |
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Treatment type(s) |
|
Trial type | Precision agriculture |
Trial design | Not applicable |
Sow date | 26 May 2011 26 May 2011 |
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Harvest date | Not specified |
Plot size | Not specified |
Plot replication | Not specified |
Psuedoreplication | Not specified |
Fertiliser |
VR Urea on 16 August, SOA 2 August |
Other trial notes |
It's not about trying to even up the yields across the paddock. It's about recognising and understanding the variations in yield potential and applyinh the appropriate inputs to best allow that potential to be reached. It's not always about applying more fertiliser, but rather redistributing inputs into the areas of greatest potential return. |
# |
Treatment 1
|
Treatment 2
|
Treatment 3
|
Gross margin ($/ha) | Gross income ($/ha) | Grain yield (t/ha) |
---|---|---|---|---|---|---|
1 | █ Sandhill Zone | █ Flat rate DAP: 45kg/ha | █ | 338.91 | 5422.23 | 1.614 |
2 | █ Mid Slope Zone | █ Flat rate DAP: 45kg/ha | █ | 335.97 | 32856.8 | 1.6 |
3 | █ Flat Zone | █ Flat rate DAP: 45kg/ha | █ | 219.63 | 5088.56 | 1.046 |
4 | █ Sandhill Zone | █ VR DAP: 45kg/ha | █ VR Urea: 90kg/ha | 445.33 | 7124.94 | 2.121 |
5 | █ Mid Slope Zone | █ VR DAP: 60kg/ha | █ VR Urea: 0kg/ha | 359.69 | 35176.5 | 1.713 |
6 | █ Flat Zone | █ VR DAP: 0kg/ha | █ VR Urea: 0 kg/ha | 221.76 | 5138 | 1.056 |
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.