Long term comparison of seeding systems

CC BY 4.0

Research organisaton
Funding source

Trial details

Researcher(s) Dylan Bruce and Sarah Noack (Hart Field Site Group)
Year(s) 2017
Contributor Hart Field Site Group
Trial location(s) Site 5, Hart, SA
Long term comparison of seeding systems locations

To compare the performance of three seeding systems and two nitrogen (N) strategies.

Key messages
  • Seeding system had a significant effect on wheat grain yield with the disc treatment averaging 4.1 t/ha compared to the no-till and strategic systems which averaged 3.5 and 3.4 t/ha, respectively. 
  • The higher nitrogen treatments increased grain protein levels and screenings, while decreasing test weight across all seeding systems.
Lead research organisation Hart Field Site Group
Host research organisation Hart Field Site Group
Trial funding source SAGIT
Related program N/A

The HFSG thank the South Australian Grains Industry Trust (SAGIT) for providing funding to support this research (H116). They also thank all the growers and SARDI Clare who assisted with trial seeding, spraying and harvesting. 

Other trial partners Not specified
Download the trial report to view additional trial information


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

Hart 2017

Sow rate or Target density Scepter wheat @ 100kg/ha
Sow date 27 May 2017
Harvest date Not specified
Plot size 35m x 13m
Plot replication Not specified
  • DAP (18:20) @ 100 kg/ha

Medium nutrition

  • Urea (46:0) @ 75 kg/ha on 28th July

High nutrition:

  • Urea (46:0) @ 75 kg/ha on 28th July
  • UAN (42:0) @ 70 L/ha on 12th Sept
Download the trial report to view additional method/treatment information

Download results

Trial results Table 1

# Treatment 1
Treatment 2
Screenings (%) Test weight (kg/hL) Protein (%) Grain yield (t/ha)
1 Strategic seeding Medium nutrition 1.9 75.4 7 3.54
2 Strategic seeding High nutrition 3.9 73.8 12.2 3.28
3 No till seeding Medium nutrition 1.1 76.6 6.7 3.53
4 No till seeding High nutrition 3.3 74.6 10.6 3.47
5 Disc seeding Medium nutrition 1.3 74.5 6.4 4.07
6 Disc seeding High nutrition 4.5 72.7 9.5 4.13

Grain yield t/ha


Protein %


Screenings %


Test weight kg/hL

Observed trial site soil information
Trial site soil testing
Not specified
Soil conditions
Trial site Soil texture
Site 5, Hart, SA Not specified
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Site 5, 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 Site 5, Hart SA
2017 650.0mm
2016 659.9mm
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



Derived climate information

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

Site 5, Hart SA


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: 11-06-2019 15:16pm AEST