| Researcher(s) |
Amanda Cook (SARDI) Ian Richter (SARDI) Wade Shepperd (SARDI) |
|---|---|
| Year(s) | 2015 |
| Contributor | Eyre Peninsula Agricultural Research Foundation |
| Trial location(s) |
Mt Cooper, SA
|
| Related trials |
The GRDC project ‘Maintaining profitable farming systems with retained stubble - upper Eyre Peninsula’ aims to produce sustainable management guidelines to control pests, weeds and diseases while retaining stubble to maintain or improve soil health, and reduce exposure to wind erosion. The major outcome to be achieved is increased knowledge and skills allowing farmers and advisers to improve farm profitability while retaining stubble in farming systems on upper Eyre Peninsula (EP).
One issue upper EP farmers identified as a problem was sowing into retained pasture residue with pasture vines causing issues with blockages at sowing and uneven germination. Also establishing legume pastures into heavy stubble residues has also an issue in this region. The trial at Mount Cooper was designed to compare plant establishment and production, and weed and pest control effectiveness in the presence and absence of previous crop or legume pasture residues.
There were no differences in medic regeneration in wheat stubbles either harvested at two heights, left standing or rolled.
| Lead research organisation |
Eyre Peninsula Agricultural Research Foundation |
|---|---|
| Host research organisation |
SARDI Minnipa Agricultural Centre |
| Trial funding source | GRDC EPF00001 |
| Related program |
Maintaining profitable farming systems with retained stubble |
| Acknowledgments |
Thank you to the Gunn family for having the trial on their property. Trial funded by GRDC Maintaining profitable farming systems with retained stubble - upper Eyre Peninsula (EPF00001). |
| Other trial partners | Not specified |
| Crop type | Pasture: Medic |
|---|---|
| Treatment type(s) |
|
| Trial type | Experimental |
| Trial design | Replicated |
| Sow date | Not specified |
|---|---|
| Harvest date | Not specified |
| Plot size | 20m x 4m |
| Plot replication | 3 |
| Paddock history | 2015: medic pasture, 2014: wheat, 2013: medic pasture |
| # |
Treatment 1
|
Wheat stubble residue April 2015 (t/ha) | Wheat yield 2014 (t/ha) |
|---|---|---|---|
| 1 | █ Residue harrowed cut high | 5.2 | 3.6 |
| 2 | █ Residue harrowed cut low | 5 | |
| 3 | █ Residue mown cut high | 4.1 | 3.6 |
| 4 | █ Residue mown cut low | 4.7 | |
| 5 | █ Residue cultivated cut high | 5.8 | 3.6 |
| 6 | █ Residue cultivated cut low | 6.8 | |
| 7 | █ Untreated control cut high | 4.4 | 3.5 |
| 8 | █ Untreated control cut low | 5.5 |
| Rainfall avg ann (mm) | 435mm |
|---|---|
| Rainfall avg gsr (mm) | 325mm |
| Rainfall trial total (mm) | 268mm |
| Rainfall trial gsr (mm) | 234mm |
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.
