| Researcher(s) |
David Scholz (Elders Ltd) |
|---|---|
| Year(s) | 2003 |
| Contributor | Liebe Group |
| Trial location(s) |
East Maya, WA
|
To establish if the current wheat yield could reach potential yield by extra N fertilisation and to identify potential constraints of 8 Satellite Sites throughout the Liebe area
Actual yield (basal treatment) was well below potential yield according to the French-Schultz equation.
| Lead research organisation |
Liebe Group |
|---|---|
| Host research organisation | N/A |
| Trial funding source | GRDC |
| Related program | N/A |
| Acknowledgments |
Thanks to farmers Peter and Colin Bryant. |
| Other trial partners | Not specified |
| Crop type | Cereal (Grain): Wheat |
|---|---|
| Treatment type(s) |
|
| Trial type | Experimental |
| Trial design | Randomised,Replicated,Blocked |
| Sow date | 27 May 2003 |
|---|---|
| Harvest date | Not specified |
| Plot size | 10m x 10m |
| Plot replication | 3 |
| Fertiliser |
60 kg/ha MAPSZC (all plots –farmer applied); 50 kg/ha Urea (all plots – farmer applied) As above, plus additional N = topdressed as Urea @55 kg/ha (DS applied on 24th July) |
| Herbicide |
1.4 L/ha Glyphosate, 0.25 L/ha Ester |
| @T1: Anthesis | @T2: Athesis | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| # |
Treatment 1
|
Harvest index (value) | Protein (%) | Grain yield (t/ha) | Total nitrogen fixed (kg N/ha) | Nitrogen uptake (%) | Plant nitrogen (%) | Nitrogen in biomass (kg/ha) | Biomass (t/ha) |
| 1 | █ basal Fertiliser Only | 45.14 | 15.1 | 1.32 | 46.19 | 50.95 | 1.36 | 23.53 | 1.69 |
| 1 | █ Basal plus N | 45.06 | 13.8 | 0.93 | 71.26 | 52.2 | 2.03 | 37.2 | 1.84 |
| 1 | █ | ||||||||
| 2 | █ | ||||||||
| 2 | █ | ||||||||
| 2 | █ | ||||||||
| Rainfall trial gsr (mm) | 262.7mm |
|---|
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.
