| Researcher(s) |
Michael Robertson (CSIRO) Kathy Wittwer (CSIRO) |
|---|---|
| Year(s) | 2005 |
| Contributor | Liebe Group |
| Trial location(s) |
West Maya, WA
|
To evaluate the response of wheat (yield and protein) in different paddock management zones to in-season application of nitrogen fertiliser, using the Yield Prophet system as a guide.
| Lead research organisation |
Commonwealth Scientific and Industrial Research Organisation |
|---|---|
| Host research organisation | N/A |
| Related program | N/A |
| Acknowledgments |
Thanks to Brian McAlpine, Brianna Peake for assistance with Yield Prophet simulations, CBH for grain analysis, GRDC for funding through the SIP09 Precision Agriculture Initiative. |
| Other trial partners | Not specified |
| Crop type | Cereal (Grain): Wheat |
|---|---|
| Treatment type(s) |
|
| Trial type | Experimental |
| Trial design | Replicated |
| Sow date | 18 May 2005 |
|---|---|
| Harvest date | Not specified |
| Plot size | 40m x 10m |
| Plot replication | 4 |
| Fertiliser |
Basal fertiliser: 100 kg/ha of K-Till extra (10 kgN/ha) applied to entire paddock at seeding. At each sampling position 3 fertiliser treatments were applied |
| # |
Treatment 1
|
Treatment 2
|
Gross margin ($/ha) | Protein (%) | Screenings (%) | Grain yield (t/ha) |
|---|---|---|---|---|---|---|
| 1 | █ Good Sand | █ 10 kg/ha Total Applied N | 303 | 7 | 5.2 | 2.3 |
| 2 | █ Gravel | █ 10 kg/ha Total Applied N | 377 | 8.4 | 3 | 2.7 |
| 3 | █ Medium Sand | █ 10 kg/ha Total Applied N | 340 | 7.7 | 4 | 2.5 |
| 4 | █ Poor Sand | █ 10 kg/ha Total Applied N | 398 | 9.1 | 5.8 | 2.8 |
| 5 | █ Red Clay | █ 10 kg/ha Total Applied N | 554 | 9.7 | 4 | 3.6 |
| 6 | █ Good Sand | █ 31 kg/ha Total Applied N | 387 | 7.2 | 4 | 2.9 |
| 7 | █ Gravel | █ 31 kg/ha Total Applied N | 367 | 8.7 | 3 | 2.8 |
| 8 | █ Medium Sand | █ 31 kg/ha Total Applied N | 375 | 7.9 | 2.1 | 2.8 |
| 9 | █ Poor Sand | █ 31 kg/ha Total Applied N | 365 | 9.6 | 2.1 | 2.7 |
| 10 | █ Red Clay | █ 31 kg/ha Total Applied N | 413 | 7.9 | 1.4 | 2.9 |
| 11 | █ Good Sand | █ 48 kg/ha Total Applied N | 396 | 7.5 | 4.9 | 3 |
| 12 | █ Gravel | █ 48 kg/ha Total Applied N | 328 | 9.9 | 3.2 | 2.7 |
| 13 | █ Medium Sand | █ 48 kg/ha Total Applied N | 367 | 8.5 | 3.3 | 2.9 |
| 14 | █ Poor Sand | █ 48 kg/ha Total Applied N | 229 | 11.1 | 5.5 | 2.1 |
| 15 | █ Red Clay | █ 48 kg/ha Total Applied N | 474 | 9.5 | 4.2 | 3.4 |
| Rainfall trial gsr (mm) | 298.5mm |
|---|
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.
