| Researcher(s) |
Marianne Hoogmoed (SARDI) Peter Hooper (Hart) Barry Mudge (Barry Mudge Consulting) Sarah Noack (SARDI) Victor Sadras (SARDI) Rob Wheeler (SARDI) |
|---|---|
| Year(s) | 2014 |
| Contributor | Hart Field Site Group |
| Trial location(s) |
Hart, SA
|
To determine appropriate nitrogen fertiliser rates for maximising crop growth and yield of wheat varieties
At Hart, higher N-fertiliser rate (180 and 240 kg N/ha) produced lower grain yields compared to lower N rates (0, 60 and 120 kg N/ha).
| Lead research organisation |
South Australian Research and Development Institute |
|---|---|
| Host research organisation |
Hart Field Site Group |
| Trial funding source | GRDC DAS00147 |
| Related program | N/A |
| Acknowledgments |
The authors gratefully acknowledge the grower involved in providing paddock samples and project funding from GRDC (project DAS00147) |
| Other trial partners | Not specified |
| Crop type | Cereal (Grain): Wheat |
|---|---|
| Treatment type(s) |
|
| Trial type | Experimental |
| Trial design | Randomised,Replicated,Blocked |
| Sow date | 16 May 2014 16 May 2014 |
|---|---|
| Harvest date | Not specified |
| Plot size | 1.75m x 10m |
| Plot replication | 3 |
| # | Variety |
Treatment 1
|
Harvest index (value) | Head abundance (heads/m2) | Shoot biomass (t/ha) | Grain yield (t/ha) | 1000 grain weight (g) |
|---|---|---|---|---|---|---|---|
| 1 | █ Mace | █ 0 kg N/ha | 0.44 | 371.33 | 12.06 | 5.27 | 42.56 |
| 2 | █ Hatchet CL Plus | █ 0 kg N/ha | 0.43 | 430 | 11.94 | 5.2 | 49.14 |
| 3 | █ Scout | █ 0 kg N/ha | 0.47 | 400 | 11.44 | 5.39 | 42.13 |
| 4 | █ Trojan | █ 0 kg N/ha | 0.46 | 402 | 12.68 | 5.77 | 44.01 |
| 5 | █ Mace | █ 60 kg N/ha applied at seeding | 0.43 | 500 | 13.93 | 6.04 | 36.56 |
| 6 | █ Hatchet CL Plus | █ 60 kg N/ha applied at seeding | 0.47 | 498.67 | 12.72 | 5.95 | 45.14 |
| 7 | █ Scout | █ 60 kg N/ha applied at seeding | 0.44 | 550.67 | 12.49 | 5.45 | 35.7 |
| 8 | █ Trojan | █ 60 kg N/ha applied at seeding | 0.44 | 437.33 | 12.39 | 5.5 | 39.35 |
| 9 | █ Mace | █ 120 kg N/ha split between seeding and beginning of tillering (GS20) | 0.4 | 499.33 | 13.81 | 5.58 | 31.31 |
| 10 | █ Hatchet CL Plus | █ 120 kg N/ha split between seeding and beginning of tillering (GS20) | 0.45 | 520 | 13.2 | 5.96 | 40.94 |
| 11 | █ Scout | █ 120 kg N/ha split between seeding and beginning of tillering (GS20) | 0.38 | 488 | 13.08 | 5.02 | 29.59 |
| 12 | █ Trojan | █ 120 kg N/ha split between seeding and beginning of tillering (GS20) | 0.38 | 490 | 13.44 | 5.04 | 29.45 |
| 13 | █ Mace | █ 180 kg N/ha split between seeding and beginning of tillering (GS20) | 0.37 | 528.67 | 14.2 | 5.2 | 28.1 |
| 14 | █ Hatchet CL Plus | █ 180 kg N/ha split between seeding and beginning of tillering (GS20) | 0.41 | 565.33 | 12.44 | 5.1 | 34.61 |
| 15 | █ Scout | █ 180 kg N/ha split between seeding and beginning of tillering (GS20) | 0.35 | 450.67 | 11.21 | 3.97 | 24.95 |
| 16 | █ Trojan | █ 180 kg N/ha split between seeding and beginning of tillering (GS20) | 0.37 | 467.33 | 12.91 | 4.78 | 27.51 |
| 17 | █ Mace | █ 180 kg N/ha split between seeding, beginning of tillering (GS20) and mid stem elongation (GS31). | 0.38 | 467.33 | 12.32 | 4.71 | 28.6 |
| 18 | █ Hatchet CL Plus | █ 180 kg N/ha split between seeding, beginning of tillering (GS20) and mid stem elongation (GS31). | 0.41 | 569.33 | 12.59 | 5.21 | 33.8 |
| 19 | █ Scout | █ 180 kg N/ha split between seeding, beginning of tillering (GS20) and mid stem elongation (GS31). | 0.35 | 496 | 12.74 | 4.49 | 25.29 |
| 20 | █ Trojan | █ 180 kg N/ha split between seeding, beginning of tillering (GS20) and mid stem elongation (GS31). | 0.36 | 412 | 12.07 | 4.39 | 27.85 |
| 21 | █ Mace | █ 240 kg N/ha split between seeding and beginning of tillering (GS20) | 0.26 | 483.33 | 13.02 | 3.49 | 24.77 |
| 22 | █ Hatchet CL Plus | █ 240 kg N/ha split between seeding and beginning of tillering (GS20) | 0.41 | 536.67 | 12.67 | 5.25 | 34.45 |
| 23 | █ Scout | █ 240 kg N/ha split between seeding and beginning of tillering (GS20) | 0.31 | 494 | 12.84 | 3.98 | 23.05 |
| 24 | █ Trojan | █ 240 kg N/ha split between seeding and beginning of tillering (GS20) | 0.32 | 440 | 12.02 | 3.86 | 24.31 |
| Rainfall trial gsr (mm) | 280mm |
|---|
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.
