Wheat yield and its components in response to early sowing and nitrogen fertiliser rate

2015
CC BY 4.0

Research organisatons
Funding source

Trial details

Researcher(s) Marianne Hoogmoed (SARDI)
Peter Hooper (Hart)
Barry Mudge (Barry Mudge Consulting)
Sarah Noack (SARDI)
Victor Sadras (SARDI)
Rob Wheeler (SARDI)
Year(s) 2015
Contributor Hart Field Site Group
Trial location(s) Hart, SA
Wheat yield and its components in response to early sowing and nitrogen fertiliser rate locations
Aims

This trial is apart of a three year GRDC project to develop a benchmark to be used to accurately determine crops' N status.

The aim of this years trial is to determine how a crops’ N status changes in relation to early sowing and variety.

Key messages
  • Early sowing increased grain yields in all of the wheat varieties trialed, however, the size of the increase was dependent on the variety.
  • Nitrogen application increased grain yield in the early sown treatments and increased grain protein especially in late sown crops.
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 thank GRDC for project funding (project DAS00147) and Hart staff for managing the trial.


Other trial partners Hart Field Site Group and Barry Mudge Consulting
Download the trial report to view additional trial information

Method

Crop type Cereal (Grain): Wheat
Treatment type(s)
  • Crop: Variety
  • Fertiliser: Rate
  • Sowing: Timing
Trial type Experimental
Trial design Randomised,Replicated,Blocked

Hart 2015

Sow rate or Target density 210 plants/m2 Mace, Axe, Scout, Trojan, Spitfire and Cobra
Sow date 30 April 2015
Harvest date Not specified
Plot size 1.75m x 10m
Plot replication 3
Fertiliser
  • 0 kg N/ha
  • 60 kg N/ha split between seeding and beginning of tillering (GS20)
Download the trial report to view additional method/treatment information

Download results

Trial results Table 1

@T1: Early sowing (30-04-2015) @T2: Late sowing (26-05-2015)
# Variety
Treatment 1
1000 grain weight (g) Anthesis biomass (t/ha) Screenings (%) 1000 grain weight (g) Anthesis biomass (t/ha) Screenings (%)
1 Axe 0 kg N/ha 38.49 4.34 0.2 36.66 3.42 0.33
1 Axe 0 kg N/ha 40.77 4.47 0.18 31.77 4.05 0.91
2 Cobra 0 kg N/ha 42.49 4.61 0.11 34.28 4.19 3.37
2 Cobra 0 kg N/ha 41.71 4 0.1 33.84 4.95 10.29
3 Mace 0 kg N/ha 43.97 3.11 0.17 36.69 3.51 3.91
3 Mace 0 kg N/ha 42.89 4.58 0.06 36.49 3.51 0.31
4 Scout 60 kg N/ha 37.34 5.28 0.44 28.81 4.84 4.92
4 Scout 60 kg N/ha 36.99 5.06 0.52 25.69 5.5 13.82
5 Spitfire 60 kg N/ha 40.9 4.96 0.28 28.11 5.52 24.3
5 Spitfire 60 kg N/ha 39.77 5.25 0.2 26.74 5.75 19.74
6 Trojan 60 kg N/ha 41.36 4.89 0.66 30.65 4.38 17.51
6 Trojan 60 kg N/ha 37.79 5.48 0.77 29.1 5.76 14.76
7 Axe
7 Axe
8 Cobra
8 Cobra
9 Mace
9 Mace
10 Scout
10 Scout
11 Spitfire
11 Spitfire
12 Trojan
12 Trojan

1000 grain weight g


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Anthesis biomass t/ha


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Screenings %


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Observed trial site soil information
Trial site soil testing
Not specified
Soil conditions
Trial site Soil texture
Hart, SA Not specified
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Hart, SA Chromosol
Soil Moisture Source: BOM/ANU
Average amount of water stored in the soil profile during the year, estimated by the OzWALD model-data fusion system.
Year Hart SA
2015 597.6mm
2014 638.6mm
2013 622.8mm
2012 654.6mm
2011 683.8mm
2010 686.7mm
2009 669.9mm
2008 633.9mm
2007 649.9mm
2006 651.2mm
2005 675.4mm
2004 633.0mm
2003 652.2mm
2002 649.4mm
2001 674.5mm
2000 625.6mm
National soil grid Source: CSIRO/TERN
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

Derived climate information

No observed climate data available for this trial.
Derived climate data is determined from trial site location and national weather sources.

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 report and links

2015 trial report



Trial last modified: 11-06-2019 11:55am AEST