| Researcher(s) |
Ben Biddulph (DAFWA) Rebecca Smith (Living Farm) Chloe Turner (Facey) |
|---|---|
| Year(s) | 2016 |
| Contributor | Facey Group |
| Trial location(s) |
Corrigin, WA
|
To assess the impact of various stubble management practices on the extent, severity and duration of frost and determine its effect on canopy temperature and grain yield.
Of the seven frost events that showed significant differences, all showed that the reduced stubble treatment (2t/ha) reached colder minimum temperatures than the removed stubble treatment (1.6t/ha). Across the seven events, the retained stubble treatment (2.5t/ha) also remained warmer than the reduced stubble treatment. The removed stubble treatment spent significantly less time at -2â°C temperature threshold compared to the reduced stubble treatment. The retained stubble treatment was not significantly different to either of these.
These results suggest that removing stubble decreases the severity and duration of frost, however as discussed, there was variability in the results between the retained and reduced stubble treatments. This suggests, that in seasons where frost events are so severe, stubble management does not have a large effect on the severity of events.
| Lead research organisation |
Facey Group |
|---|---|
| Host research organisation | N/A |
| Trial funding source | GRDC |
| Related program | N/A |
| Acknowledgments |
GRDC for funding the trial through the National Frost Initiative. Peter Hanson, Theweatherlogger for installation, maintenance and data acquisition of onsite weather station. Shane Hill for his for providing the trial site, carrying out the seeding and agronomic management. |
| Other trial partners | Living Farm; DAFWA |
| Crop type | Cereal (Grain): Wheat |
|---|---|
| Treatment type(s) |
|
| Trial type | Experimental |
| Trial design | Replicated |
| Sow rate or Target density | 60kg/ha |
|---|---|
| Sow date | 24 May 2016 |
| Harvest date | Not specified |
| Plot size | 15m x 15m |
| Plot replication | 4 |
| Fertiliser |
Urea 50kg, DAPscz 40kg, Zinc Sulphate Heptahydrate 0.5kg, Ammonium Sulphate Granules 0.5 Kg |
| Herbicide |
2nd May - Oxyfuorfen 240EC 0.1L, 2,4-D LVE 680 0.3L, Glyphosate 540 1.1 L 24th May - Trifluralin 480 Kenso 2.5L, Chlorsulfuron 750WG 10g, Triasulfuron 25g, Paraquat 250 1.2 L 19th July - Tigrex 1L, Triasulfuron 7g |
| Insecticide |
24th May - EverGol Prime 0.048L |
| Fungicide |
24th May - Chlorpyrifos 500 EC 0.3 L |
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.
