Researcher(s) |
Leigh Davis (MAC) Nicole Dimos (SPAA) Linden Masters (FSG) Tim Moyle (Landmark Kimba) Brenton Spriggs (SARDI) |
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Year(s) | 2011 |
Contributor | Society of Precision Agriculture Australia |
Trial location(s) |
Kimba, SA
|
Additional N did not have an economic advantage in this season. Paddock and demonstration site suffered from the dry 6 weeks period mid season. Stem rust devastated potential 3 ton crop reducing yield by 50%. This combination resulted in poor yields, low test weight and high screenings. Good soil showed improved protein over deeper sand regardless of extra N applied. Extra N marginally improved protein but not enough economically to apply more.
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 Eyre Peninsula Farming Systems 3 |
Other trial partners | The Soaks' property owners Dion, Bert, & Barb Woolford. Paddock and trial sown by Dion Woolford |
Crop type | Cereal (Grain): Wheat |
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Treatment type(s) |
|
Trial type | Precision agriculture |
Trial design | Not applicable |
Sow rate or Target density | 50kg/ha, 110 plants/m2 |
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Sow date | 30 May 2011 End of May |
Harvest date | Not specified |
Plot size | 2m x 20m |
Plot replication | Not specified |
Psuedoreplication | Not specified |
Fertiliser |
At sowing: 50 kg 18:20. Then 50, 100 and 200 kg urea hand spread at GS31 |
Other trial notes |
Many questions exist of how much nitrogen to apply in different seasons and soil types. With low organic carbon levels and sandy soils lack of ability to store nitrogen, adding N to the system using fertiliser is a standard district practice. Sowing machines with VRT allow a new option to address different soil types and potential crop needs. How much N to apply to reap economic gains is at the forefront of decision making and risk management consideration in this district. Providing sufficient nutrition for early crop establishment is essential. Applying N at GS30 allows some flexibility towards seasonal conditions and managing risk. These trials aimed to push the boundaries and unfortunately due to rust results were inconclusive. What we did learn it is essential to protect against rust as early as possible. |
# |
Treatment 1
|
Screenings (%) | Moisture (%) | Protein (%) | Grain yield (t/ha) | Test weight (kg/hL) |
---|---|---|---|---|---|---|
1 | █ Sandy loam with 0kg/ha urea | 13.1 | 11.3 | 10.4 | 1.71 | 66.4 |
2 | █ Sandy loam with 50kg/ha urea | 9.4 | 11.4 | 11.2 | 1.64 | 70.2 |
3 | █ Sandy loam with 100kg/ha urea | 9.2 | 11.3 | 11.5 | 1.71 | 68.1 |
4 | █ Sandy loam with 200kg/ha urea | 8.7 | 11.1 | 12.5 | 1.7 | 71.6 |
5 | █ Deep sand with 0kg/ha urea | 14.1 | 11.4 | 10.1 | 1.49 | 59.8 |
6 | █ Deep sand with 50kg/ha urea | 15 | 11.5 | 10.3 | 1.64 | 63.4 |
7 | █ Deep sand with 100kg/ha urea | 7.6 | 11.6 | 10.6 | 1.51 | 68.8 |
8 | █ Deep sand with 200kg/ha urea | 8.6 | 11.3 | 10.9 | 1.48 | 73.4 |
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.