John Sykes Rural Consulting
| Researcher(s) |
John Sykes (John Sykes Rural Consulting) |
|---|---|
| Year(s) | 2011 |
| Contributor | Riverine Plains |
| Trial location(s) |
Rand, NSW
|
To compare the effects of using variable rates of nitrogen and phophorus on wheat yield.
Using precision agriculture (PA) to apply variable rate of fertilise is an easy way to test new idea on farm. Precision agriculture can be used to apply different rates of fertiliser to different areas of a paddock. Wheat responded to applied phophorus, even though soil tests indicated it had a high level of Colwell P (56mg/ka).
| Lead research organisation |
John Sykes Rural Consulting |
|---|---|
| Host research organisation |
Riverine Plains |
| Trial funding source | GRDC SPA00010 |
| Related program | N/A |
| Acknowledgments |
David Wolfenden |
| Other trial partners | Not specified |
| Crop type | Cereal (Grain): Wheat |
|---|---|
| Treatment type(s) |
|
| Trial type | Demonstration |
| Trial design | Unreplicated |
| Sow rate or Target density | 70kg/ha |
|---|---|
| Sow date | 23 May 2011 |
| Harvest date | Not specified |
| Plot size | 250m x 27.6m |
| Plot replication | Not specified |
| Fertiliser |
Fertiliser as per treatments |
| Soil amelioration |
pH (H20) 5.8, pH (CaCl2) 5.0-5.2, Phosphate (Collwell) 56mg/kg |
| # | Variety |
Treatment 1
|
Treatment 2
|
Grain yield (t/ha) |
|---|---|---|---|---|
| 1 | █ Venture wheat | █ 0P | █ 0N | 3.1 |
| 2 | █ | █ 5P | █ 0N | 3.5 |
| 3 | █ | █ 5P | █ 40N @ Z32 | 3.5 |
| 4 | █ | █ 10P | █ 0N | 3.7 |
| 5 | █ | █ 10P | █ 40N @ Z32 | 3.6 |
| 6 | █ | █ 20P | █ 0N | 3.5 |
| 7 | █ | █ 20P | █ 40N @ Z32 | 3.4 |
| Rainfall trial gsr (mm) | 225mm |
|---|
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.
