Long term comparison of seeding systems


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

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
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



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