| Researcher(s) |
Ben Morris Nick Poole Kenton Porker |
|---|---|
| Contact email | Ben.Morris@faraustralia.com.au |
| Year(s) | 2021 - 2022 |
| Contributor | Field Applied Research (FAR) Australia |
| Trial location(s) |
Coonawarra, SA
|
To evaluate nitrogen use efficiency in winter barley under different rates and timings of applied N fertiliser applied as urea (46% N) grown on surface irrigation.
• Barley yields cv RGT Planet of over 6t/ha were achieved in 106 days from sowing to harvest with no applied nitrogen.
• Yield was maximised with no addition of nitrogen fertiliser.
• At the highest rate of 240 kg N/ha, there was a significant reduction in yield (6.03t/ha) compared to where no nitrogen was applied (6.24 t/ha).
• There was no difference in grain yield when nitrogen application timing was varied.
• Grain protein increased as higher rates of N were applied up to 160 kg N/ha. Between 160 and 240 kg N/ha, there was no difference in grain protein.
• The grain protein was too high to achieve malt quality in all application timings and rates of nitrogen in this trial.
| 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 B21-04-2 |
| Related program | N/A |
| Acknowledgments | N/A |
| Other trial partners | Not specified |
| Crop type | Cereal (Grain): Barley |
|---|---|
| Treatment type(s) |
|
| Trial type | Experimental |
| Trial design | Replicated |
| Sow date | 28 October 2021 |
|---|---|
| Harvest date | 1 February 2022 |
| Plot size | Not specified |
| Plot replication | Not specified |
| Fertiliser |
Please see report for rates for application times. |
| Soil amelioration |
Fallowed for 2 weeks prior to sowing |
| Sow date | Not specified |
|---|---|
| Harvest date | Not specified |
| Plot size | Not specified |
| Plot replication | Not specified |
| Fertiliser | Not specified |
| Soil amelioration | Not specified |
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.
