| Researcher(s) |
James Easton (CSBP) Ryan Guthrie (CSBP) Rowan Maddern (CSBP) |
|---|---|
| Year(s) | 2012 |
| Contributor | North East Farming Futures |
| Trial location(s) |
Chapman Valley, Yuna, WA
|
To compare the effectiveness of Flexi-N through the boom before seeding, banded at seeding and applied at early tillering - where wheat stubble was either burnt or retained.
This site had high soil nitrate reserves (45 mg/kg Nit N in 0 - 10cm) but there were still very good responses to Flexi-N. Although there were no Flexi-N placement/timing or stubble effects on yield, an analysis of protein yield showed that stubble reduced N recovery in the grain by about 30 kg protein/ha or 5 kg N/ha – most likely due to increased immobilisation. Leaf disease symptoms were most severe where stubble was retained but they were less obvious where Flexi-N was banded. Hectolitre weights were 78 – 79 kg/hl and screenings were 2 - 3% in all treatments.
| Lead research organisation |
North East Farming Futures |
|---|---|
| Host research organisation | N/A |
| Trial funding source | Chemical Suppliers Australia (CSBP) |
| Related program | N/A |
| Acknowledgments |
|
| Other trial partners | Not specified |
| Crop type | Cereal (Grain): Wheat |
|---|---|
| Treatment type(s) |
|
| Trial type | Experimental |
| Trial design | Replicated |
| Sow rate or Target density | 74kg/ha |
|---|---|
| Sow date | 14 May 2012 |
| Harvest date | Not specified |
| Plot size | Not specified |
| Plot replication | 3 |
| Fertiliser |
Basal 100 kg/ha Big Phos; Flexi-N (0, 80 and 2 * 80L/ha) |
| # |
Treatment 1
|
Protein (%) | Grain yield (t/ha) | Protein Yield (kg/ha) |
|---|---|---|---|---|
| 1 | █ Burnt | 10.6 | 3.48 | 377 |
| 2 | █ Burnt 80FN (Boom) | 10.1 | 3.81 | 382 |
| 3 | █ Burnt 80FN (Banded) | 9.6 | 3.66 | 353 |
| 4 | █ Burnt 80FN at Z13/14 | 9.6 | 3.98 | 393 |
| 5 | █ Burnt 80FN (Banded) and 80FN at Z13/14 | 10.9 | 4.04 | 440 |
| 6 | █ Unburnt | 9.6 | 3.21 | 297 |
| 7 | █ Unburnt 80FN (Boom) | 10.2 | 3.59 | 363 |
| 8 | █ Unburnt 80FN (Banded) | 9.5 | 3.7 | 350 |
| 9 | █ Unburnt 80FN at Z13/14 | 9.5 | 3.74 | 350 |
| 10 | █ Unburnt 80FN (Banded) and 80FN at Z13/14 | 10.2 | 4.04 | 407 |
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.
