| Researcher(s) |
Ben Morris Nick Poole Kenton Porker |
|---|---|
| Contact email | Ben.Morris@faraustralia.com.au |
| Year(s) | 2021 |
| Contributor | Field Applied Research (FAR) Australia |
| Trial location(s) |
Finley, NSW
|
To assess whether the optimum timing for applied N interacts with N rate
• Different N timing strategies had no significant effect on yield irrespective of N rate applied (80, 160, 240 kg N/ha)
• Applied N fertiliser (based on urea 46% N) significantly increased yield over the unfertilised crop up to the highest rate of 240 kg N/ha.
• Dry matter production at 80% flowering significantly increased over the unfertilised crop when N fertiliser was applied at the early timing (Post sow pre-emergence (PSPE)/6 leaf).
• Nitrogen removal at 80% flowering was significantly increased compared to the unfertilised crop when N fertiliser was applied at the early timings (PSPE/6leaf), however N removal at the later timing (green bud/yellow bud) was only increased at the highest rate of N fertiliser (240 Kg N/ha).
• Oilseed test weight was significantly higher when Nitrogen application was delayed until 6 leaf/green bud (62.8 kg/hl) or green bud/yellow bud (63.0 kg/hl) compared to PSPE/6 leaf application (62.2 kg/hl)
• Grain oil content decreased as N application and yield increased.
| Lead research organisation |
Field Applied Research (FAR) Australia |
|---|---|
| Host research organisation | N/A |
| Trial funding source | GRDC FAR1906-003RTX |
| Trial funding source | FAR FAR IRR C21-04-1 |
| Related program | N/A |
| Acknowledgments | N/A |
| Other trial partners | Not specified |
| Crop type | Oilseed: Canola |
|---|---|
| Treatment type(s) |
|
| Trial type | Experimental |
| Trial design | Replicated |
| Sow date | 30 April 2021 |
|---|---|
| Harvest date | 4 December 2021 |
| Plot size | Not specified |
| Plot replication | Not specified |
| Soil amelioration |
Wheat stubble incorporated with speed disc in Autumn |
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.
