| Researcher(s) |
Nick Poole Cassandra Schefe Michael Straight |
|---|---|
| Year(s) | 2017 |
| Contributor | Riverine Plains |
| Trial location(s) |
Mulwala, NSW
|
| Related trials |
The aim of this work is to understand the impact of stubble retention on in-canopy temperatures and associated risk of frost in cropping environments with high yields and high stubble loads.
The 2017 season was significantly colder than average with about 500 hours below zero.
While stubble management may influence in-canopy temperatures, the differences between management practices were minimal during 2017.
Differences in frost damage of grains were significant between treatments at both the Coreen and Yarrawonga sites, with the burnt treatment showing the greatest frost damage at Coreen, while the no-till stubble retained (NTSR) treatments showed the greatest damage at Yarrawonga.
Stubble management per se did not influence frost damage in wheat during 2017, with frost damage not necessarily related to in-canopy temperatures.
Stubble management practices can influence the rate of crop development and may lead to changes in flowering time. This change in rate of development can influence crop susceptibility to frost at different times throughout the growing season.
| Lead research organisation |
Riverine Plains |
|---|---|
| Host research organisation |
Riverine Plains |
| Trial funding source | GRDC RPI00009 |
| Related program |
National Frost Initiative |
| Acknowledgments |
This work was carried out as part of the GRDC project investment Maintaining profitable farming systems with retained stubble in the Riverine Plains region (2013–18). |
| Other trial partners | FAR Australia |
| Crop type | Cereal (Grain): Wheat |
|---|---|
| Treatment type(s) |
|
| Trial type | Experimental |
| Trial design | Randomised,Replicated,Blocked |
| Sow date | Not specified |
|---|---|
| Harvest date | Not specified |
| Plot size | Not specified |
| Plot replication | Not specified |
| # |
Treatment 1
|
Frost incidence (%) |
|---|---|---|
| 1 | █ Stubble retained Coreen | 3.366 |
| 2 | █ Stubble incorporated Coreen | 5.415 |
| 3 | █ Stubble burnt Coreen | 7.882 |
| # |
Treatment 1
|
Frost incidence (%) |
|---|---|---|
| 1 | █ Stubble burnt Yarrawonga | 11.1 |
| 2 | █ Stubble incorporated Yarrawonga | 12.5 |
| 3 | █ NTSR -short stubble Yarrawonga | 17.2 |
| 4 | █ NTSR - long stubble Yarrawonga | 15.4 |
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.
