| Researcher(s) |
Marty Chandler (Precision AgServices) Nicole Dimos (SPAA) Peter Treloar (Precision AgServices) Kieran Wauchope (RSSA) Michael Wells (Precision AgServices) |
|---|---|
| Year(s) | 2011 |
| Contributor | Society of Precision Agriculture Australia |
| Trial location(s) |
Edillilie, SA
|
A yield increase is apparent in figures 2 (circled) and 3 (see attached Trial report) at the ripped only treatment in the eastern plot, however this is not seen in the western plots and does not stand out in graph 1. Results presented in Graph 1 generally show only slight differences with the greatest response observed in the gypsum only treatment on the eastern plots. This soil was highly sodic at 10cm and as could be expected the gypsum would make a quicker impact on sodicity, thus allowing for improved drainage that may have improved crop production. Gypsum would take longer to impact on subsoil sodicity and may show a response after several years of data are collected
| 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) and Caring for Our Country and State NRM Community Grants |
| Other trial partners | Peter and Brett Mickan (Property owner) |
| Crop type | Cereal (Grain): Wheat |
|---|---|
| Treatment type(s) |
|
| Trial type | Precision agriculture |
| Trial design | Not applicable |
| Sow rate or Target density | 100 kg/ha |
|---|---|
| Sow date | 10 March 2011 10 March 2011 |
| Harvest date | Not specified |
| Plot size | Not specified |
| Plot replication | Not specified |
| Fertiliser |
140 kg/ha Urea |
| Soil amelioration |
Gypsum at 2.5 t/ha, disced and spading with gypsum at 2.5t/ha, ripping plus gypsum at 2.5 t/ha, a control and ripping plus spading with gypsum at 2.5 t/ha. |
| # |
Treatment 1
|
Treatment 2
|
Electrical conductivity (dS/m) |
|---|---|---|---|
| 1 | █ South P1 site | █ 0-10 cm depth | 0.12 |
| 2 | █ South P1 site | █ 10-30 cm depth | 0.04 |
| 3 | █ South P1 site | █ 30-70 cm depth | 0.32 |
| 4 | █ South P1 site | █ 70-90 cm depth | 0.48 |
| 5 | █ South Y1 site | █ 0-10 cm depth | 0.08 |
| 6 | █ South Y1 site | █ 10-30 cm depth | 0.04 |
| 7 | █ South Y1 site | █ 30-70 cm depth | 0.05 |
| 8 | █ South Y1 site | █ 70-90 cm depth | 0.05 |
| 9 | █ South G1 site | █ 0-10 cm depth | 0.05 |
| 10 | █ South G1 site | █ 10-30 cm depth | 0.04 |
| 11 | █ South G1 site | █ 30-70 cm depth | 0.16 |
| 12 | █ South G1 site | █ 70-90 cm depth | 0.28 |
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.
