| Researcher(s) |
Paul Blackwell (DAFWA) Glen Reithmuller (DAFWA) |
|---|---|
| Year(s) | 2013 |
| Contributor | Liebe Group |
| Trial location(s) |
West Wubin, WA
|
To test the effect of very deep ripping to 500mm with shallow leading tines and incorporation of limesand on a very deeply compacted acid sand plain soil.
| Lead research organisation | N/A |
|---|---|
| Host research organisation |
Liebe Group |
| Trial funding source | Caring for our Country |
| Related program | N/A |
| Acknowledgments |
The Liebe Group for hosting the site and assisting with field work. Shari, Bruce and Syd of Wongan RSU and Trevor Bell and Greg Brown of Geraldton RSU for ripping, seeding, weeding and harvest operations, Boekeman Machinery for the tractor use and helping with the ripper. Virginia and Stephanie for the lab measurements. Northern Agricultural Catchments Council (NACC) for leading the project “Increasing the adoption of reduced cropping traffic in broadacre industry in WA” and the provision of funds from ‘Caring for Our Country’ |
| Other trial partners | Not specified |
| Crop type | Cereal (Grain): Wheat |
|---|---|
| Treatment type(s) |
|
| Trial type | Experimental |
| Trial design | Replicated |
| Sow date | 22 May 2013 |
|---|---|
| Harvest date | Not specified |
| Plot size | 2.5m x 20m |
| Plot replication | 4 |
| Fertiliser |
55 kg/ha DAP, 32 or 65 kg/ha urea as per protocol |
| Herbicide |
1.5 L/ha Roundup,2 L/ha SpraySeed 250,118g/ha Sakura,300 mL/ha Axial, 0.5% Adigor,1L/ha Velocity, 1% Hasten |
| # |
Treatment 1
|
Treatment 2
|
Grain yield (t/ha) |
|---|---|---|---|
| 1 | █ 3 t/ha lime and high N | █ 0mm Deep Ripping | 2.23 |
| 2 | █ 3 t/ha lime and high N | █ 300mm Deep Ripping | 2.78 |
| 3 | █ 3 t/ha lime and high N | █ 500mm Deep Ripping | 3.14 |
| 4 | █ 3 t/ha lime and low N | █ 0mm Deep Ripping | 2.18 |
| 5 | █ 3 t/ha lime and low N | █ 300mm Deep Ripping | 2.71 |
| 6 | █ 3 t/ha lime and low N | █ 500mm Deep Ripping | 2.94 |
| 7 | █ no lime and high N | █ 0mm Deep Ripping | 2.08 |
| 8 | █ no lime and high N | █ 300mm Deep Ripping | 2.7 |
| 9 | █ no lime and high N | █ 500mm Deep Ripping | 2.94 |
| 10 | █ no lime and low N | █ 0mm Deep Ripping | 1.96 |
| 11 | █ no lime and low N | █ 300mm Deep Ripping | 2.59 |
| 12 | █ no lime and low N | █ 500mm Deep Ripping | 3.03 |
| Rainfall trial gsr (mm) | 228mm |
|---|
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.
