Effects of N fertiliser rates and variety on crop growth and grain yield

2014

Research organisatons
Funding source

Trial details

Researcher(s) Marianne Hoogmoed, Victor Sadras and Rob Wheeler (SARDI), Sarah Noack and Peter Hooper (Hart) and Barry Mudge (Barry Mudge Consulting)
Year(s) 2014
Contributor Hart Field Site Group
Trial location(s) Site 5, Hart, SA
Effects of N fertiliser rates and variety on crop growth and grain yield locations
Aims

To determine appropriate nitrogen fertiliser rates for maximising crop growth and yield of wheat varieties

Key messages

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
Download the trial report to view additional trial information

Method

Crop type Wheat
Treatment type(s)
  • Fertiliser: Rate
  • Variety: Type
Trial type Experimental
Trial design Randomised,Replicated,Blocked

Hart 2014

Sow date 16 May 2014 16 May 2014
Harvest date Not specified
Plot size 1.75m x 10m
Plot replication 3
Download the trial report to view additional method/treatment information

Download results

Trial results Table 1

# Variety
Treatment 1
Shoot biomass (t/ha) 1000 grain weight (g) Harvest index (value) Head abundance (heads/m2) Grain yield (t/ha)
1 Mace 0 kg N/ha 12.06 42.56 0.44 371.33 5.27
2 Hatchet CL Plus 0 kg N/ha 11.94 49.14 0.43 430 5.2
3 Scout 0 kg N/ha 11.44 42.13 0.47 400 5.39
4 Trojan 0 kg N/ha 12.68 44.01 0.46 402 5.77
5 Mace 60 kg N/ha applied at seeding 13.93 36.56 0.43 500 6.04
6 Hatchet CL Plus 60 kg N/ha applied at seeding 12.72 45.14 0.47 498.67 5.95
7 Scout 60 kg N/ha applied at seeding 12.49 35.7 0.44 550.67 5.45
8 Trojan 60 kg N/ha applied at seeding 12.39 39.35 0.44 437.33 5.5
9 Mace 120 kg N/ha split between seeding and beginning of tillering (GS20) 13.81 31.31 0.4 499.33 5.58
10 Hatchet CL Plus 120 kg N/ha split between seeding and beginning of tillering (GS20) 13.2 40.94 0.45 520 5.96
11 Scout 120 kg N/ha split between seeding and beginning of tillering (GS20) 13.08 29.59 0.38 488 5.02
12 Trojan 120 kg N/ha split between seeding and beginning of tillering (GS20) 13.44 29.45 0.38 490 5.04
13 Mace 180 kg N/ha split between seeding and beginning of tillering (GS20) 14.2 28.1 0.37 528.67 5.2
14 Hatchet CL Plus 180 kg N/ha split between seeding and beginning of tillering (GS20) 12.44 34.61 0.41 565.33 5.1
15 Scout 180 kg N/ha split between seeding and beginning of tillering (GS20) 11.21 24.95 0.35 450.67 3.97
16 Trojan 180 kg N/ha split between seeding and beginning of tillering (GS20) 12.91 27.51 0.37 467.33 4.78
17 Mace 180 kg N/ha split between seeding, beginning of tillering (GS20) and mid stem elongation (GS31). 12.32 28.6 0.38 467.33 4.71
18 Hatchet CL Plus 180 kg N/ha split between seeding, beginning of tillering (GS20) and mid stem elongation (GS31). 12.59 33.8 0.41 569.33 5.21
19 Scout 180 kg N/ha split between seeding, beginning of tillering (GS20) and mid stem elongation (GS31). 12.74 25.29 0.35 496 4.49
20 Trojan 180 kg N/ha split between seeding, beginning of tillering (GS20) and mid stem elongation (GS31). 12.07 27.85 0.36 412 4.39
21 Mace 240 kg N/ha split between seeding and beginning of tillering (GS20) 13.02 24.77 0.26 483.33 3.49
22 Hatchet CL Plus 240 kg N/ha split between seeding and beginning of tillering (GS20) 12.67 34.45 0.41 536.67 5.25
23 Scout 240 kg N/ha split between seeding and beginning of tillering (GS20) 12.84 23.05 0.31 494 3.98
24 Trojan 240 kg N/ha split between seeding and beginning of tillering (GS20) 12.02 24.31 0.32 440 3.86

Grain yield t/ha


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1000 grain weight g


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Harvest index value


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Head abundance heads/m2


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Shoot biomass t/ha


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Observed trial site soil information
Trial site soil testing
Not specified
Soil conditions
Trial site Soil texture
Site 5, Hart, SA Calcarosol
Derived trial site soil information
Australian Soil Classification Source
Trial site Soil order
Site 5, Hart, SA Chromosol
National soil grid Source
NOTE: National Soil Grid data is aggregated information for background information on the wider area
Actual soil values can vary significantly in a small area and the trial soil tests are the most relevant data where available

Soil properties

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Climate

Site 5, Hart SA 2014


Observed climate information

Rainfall trial gsr (mm) 280mm

Derived climate information

Site 5, Hart SA

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Some data on this site is sourced from the Bureau of Meteorology

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.



Trial last modified: 23-07-2019 10:49am AEST