Researcher(s) |
Marianne Hoogmoed (SARDI) Peter Hooper (Hart) Barry Mudge (Barry Mudge Consulting) Sarah Noack (SARDI) Victor Sadras (SARDI) Rob Wheeler (SARDI) |
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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 |
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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 |
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Treatment type(s) |
|
Trial type | Experimental |
Trial design | Randomised,Replicated,Blocked |
Sow date | 16 May 2014 16 May 2014 |
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Harvest date | Not specified |
Plot size | 1.75m x 10m |
Plot replication | 3 |
# | Variety |
Treatment 1
|
Head abundance (heads/m2) | Grain yield (t/ha) | Shoot biomass (t/ha) | 1000 grain weight (g) | Harvest index (value) |
---|---|---|---|---|---|---|---|
1 | █ Mace | █ 0 kg N/ha | 371.33 | 5.27 | 12.06 | 42.56 | 0.44 |
2 | █ Hatchet CL Plus | █ 0 kg N/ha | 430 | 5.2 | 11.94 | 49.14 | 0.43 |
3 | █ Scout | █ 0 kg N/ha | 400 | 5.39 | 11.44 | 42.13 | 0.47 |
4 | █ Trojan | █ 0 kg N/ha | 402 | 5.77 | 12.68 | 44.01 | 0.46 |
5 | █ Mace | █ 60 kg N/ha applied at seeding | 500 | 6.04 | 13.93 | 36.56 | 0.43 |
6 | █ Hatchet CL Plus | █ 60 kg N/ha applied at seeding | 498.67 | 5.95 | 12.72 | 45.14 | 0.47 |
7 | █ Scout | █ 60 kg N/ha applied at seeding | 550.67 | 5.45 | 12.49 | 35.7 | 0.44 |
8 | █ Trojan | █ 60 kg N/ha applied at seeding | 437.33 | 5.5 | 12.39 | 39.35 | 0.44 |
9 | █ Mace | █ 120 kg N/ha split between seeding and beginning of tillering (GS20) | 499.33 | 5.58 | 13.81 | 31.31 | 0.4 |
10 | █ Hatchet CL Plus | █ 120 kg N/ha split between seeding and beginning of tillering (GS20) | 520 | 5.96 | 13.2 | 40.94 | 0.45 |
11 | █ Scout | █ 120 kg N/ha split between seeding and beginning of tillering (GS20) | 488 | 5.02 | 13.08 | 29.59 | 0.38 |
12 | █ Trojan | █ 120 kg N/ha split between seeding and beginning of tillering (GS20) | 490 | 5.04 | 13.44 | 29.45 | 0.38 |
13 | █ Mace | █ 180 kg N/ha split between seeding and beginning of tillering (GS20) | 528.67 | 5.2 | 14.2 | 28.1 | 0.37 |
14 | █ Hatchet CL Plus | █ 180 kg N/ha split between seeding and beginning of tillering (GS20) | 565.33 | 5.1 | 12.44 | 34.61 | 0.41 |
15 | █ Scout | █ 180 kg N/ha split between seeding and beginning of tillering (GS20) | 450.67 | 3.97 | 11.21 | 24.95 | 0.35 |
16 | █ Trojan | █ 180 kg N/ha split between seeding and beginning of tillering (GS20) | 467.33 | 4.78 | 12.91 | 27.51 | 0.37 |
17 | █ Mace | █ 180 kg N/ha split between seeding, beginning of tillering (GS20) and mid stem elongation (GS31). | 467.33 | 4.71 | 12.32 | 28.6 | 0.38 |
18 | █ Hatchet CL Plus | █ 180 kg N/ha split between seeding, beginning of tillering (GS20) and mid stem elongation (GS31). | 569.33 | 5.21 | 12.59 | 33.8 | 0.41 |
19 | █ Scout | █ 180 kg N/ha split between seeding, beginning of tillering (GS20) and mid stem elongation (GS31). | 496 | 4.49 | 12.74 | 25.29 | 0.35 |
20 | █ Trojan | █ 180 kg N/ha split between seeding, beginning of tillering (GS20) and mid stem elongation (GS31). | 412 | 4.39 | 12.07 | 27.85 | 0.36 |
21 | █ Mace | █ 240 kg N/ha split between seeding and beginning of tillering (GS20) | 483.33 | 3.49 | 13.02 | 24.77 | 0.26 |
22 | █ Hatchet CL Plus | █ 240 kg N/ha split between seeding and beginning of tillering (GS20) | 536.67 | 5.25 | 12.67 | 34.45 | 0.41 |
23 | █ Scout | █ 240 kg N/ha split between seeding and beginning of tillering (GS20) | 494 | 3.98 | 12.84 | 23.05 | 0.31 |
24 | █ Trojan | █ 240 kg N/ha split between seeding and beginning of tillering (GS20) | 440 | 3.86 | 12.02 | 24.31 | 0.32 |
Rainfall trial gsr (mm) | 280mm |
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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.