| Researcher(s) |
Colin Hacking (SFS) Gary Sheppard (SFS) Rohan Wardle (SFS) |
|---|---|
| Year(s) | 2005 |
| Contributor | Southern Farming Systems |
| Trial location(s) |
Yalla-Y-Poora, VIC
|
To assess the impact of nitrogen timing on canopy development and resultant grain yield and quality, where starting soil nitrogen levels are high.
Delaying nitrogen application increased grain protein as would be expected. Treatment 5 which had 75 kg/ha nitrogen applied at GS39 (flag) had 2.19% more protein than the control and was higher than the other earlier applied nitrogen treatments, although not significantly higher. The cost involved in chasing this higher grain protein could not be justified
| Lead research organisation | N/A |
|---|---|
| Host research organisation | N/A |
| Related program | N/A |
| Acknowledgments |
Thanks must go to all members and sponsors for their support of this trial. |
| Other trial partners | Not specified |
| Crop type | Cereal (Grain): Wheat |
|---|---|
| Treatment type(s) |
|
| Trial type | Experimental |
| Trial design | Randomised,Replicated,Blocked |
| Sow date | 1 June 2005 |
|---|---|
| Harvest date | 29 December 2005 |
| Plot size | 2m x 7.5m |
| Plot replication | Not specified |
| # | Variety |
Treatment 1
|
Protein (%) | Screenings (%) | Grain yield (t/ha) | Test weight (kg/hL) | Retention (%) | 1000 grain weight (g) |
|---|---|---|---|---|---|---|---|---|
| 1 | █ Kellalac | █ 30 kg N/ha pre-sowing + 10 kg N/ha at sowing + 45 kg N/ha at GS31 | 13.8 | 3.845 | 6.095 | 75.3 | 96.13 | 29.8 |
| 2 | █ Kellalac | █ 10 kg N/ha at sowing + 75 kg N/ha at GS31 | 13.78 | 4.26 | 6.065 | 75.72 | 95.74 | 31.2 |
| 3 | █ Kellalac | █ 10 kg N/ha at sowing + 45 kg N/ha at GS31 + 30 kg N/ha at GS39 | 14.07 | 3.682 | 6.037 | 74.63 | 96.3 | 30 |
| 4 | █ Kellalac | █ 10 kg N/ha at sowing | 12.03 | 4.043 | 6.428 | 75.24 | 95.27 | 32.2 |
| 5 | █ Kellalac | █ 10 kg N at sowing + 75 kg N/ha at GS39 | 14.22 | 3.51 | 5.857 | 75 | 96.48 | 31.6 |
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.
