| Researcher(s) |
Nicole Dimos (SPAA) Karen Haigh (FSG) Martin Peters (FarmingIT) Andrew Whitlock (PA) |
|---|---|
| Year(s) | 2010 |
| Contributor | Society of Precision Agriculture Australia |
| Trial location(s) |
Lake Bolac, VIC
|
To understand the benefits of soil pH mapping and its interaction with other soil and crop mapsTo compare various layers of information (pH, elevation, EM-38, yield andsatellite imagery) for understanding paddock variability.
We focussed on measuring paddock variability rather than implementing an actual variable rate trial. Soil pH mapping proved to be a valuable step towards variable rate lime with significant variability found, pH(CaCl2) varying from 4.0 to 7.1 across a 50ha paddock. A variable rate management approach to pH on this paddock would deliver a 75% saving of lime.
| Lead research organisation |
Society of Precision Agriculture Australia |
|---|---|
| Host research organisation | N/A |
| Trial funding source | GRDC SPA000010 |
| Related program | N/A |
| Acknowledgments | N/A |
| Other trial partners | CSBP Soil Laboratory, Neil Vallance (Grower). |
| Crop type | Cereal (Grain): Barley |
|---|---|
| Treatment type(s) |
|
| Trial type | Precision agriculture |
| Trial design | Not applicable |
| Sow date | 5 June 2010 5 June 2010 |
|---|---|
| Harvest date | 11 February 2011 |
| Plot size | Not specified |
| Plot replication | Not specified |
| Fertiliser |
70kg/ha MAP, 50L/ha UAN |
| Other trial notes |
Neil Vallance is actively moving down the path of variable rate management. The projectpaddock was one of several paddocks where Neil has conducted pH mapping and implemented fertiliser trials to test responses across proposed management zones. |
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.
