Is controlled traffic farming altering crop performance across seeder widths in CWFS districts?


Research organisaton
Funding source

Trial details

Researcher(s) John Small (CWFS)
Year(s) 2016
Contributor Central West Farming Systems
Trial location(s) Site 1, Rankins Springs, NSW
Is controlled traffic farming altering crop performance across seeder widths in CWFS districts? locations

To identify any possible impacts on crop growth in controlled traffic systems where the header residue maybe inconsistently spread back across the tram track width over a number of seasons.

Key messages
  • Although not statistically validated a trend of either higher or lower NDVI’s in the centre of the tram tracks was observed on 7 of the 14 farms investigated.
  • The trend to wider header fronts makes the practicalities of redistributing residue evenly back across the width of the header all the more difficult and may accelerate any rate of change in crop performance.
  • In the short term CTF producers should target even redistribution of crop residue across header
  • Further work is needed and the author would welcome collaboration from others in helping to design a future experiment and statistical analysis.
Lead research organisation Central West Farming Systems
Host research organisation N/A
Trial funding source GRDC ACT00004,CWF00018
Related program N/A
  • The author acknowledges the support of cooperating farmers in allowing access to both their crops and paddock records. It is hoped that in the future with further work a more definitive results can be found.
  • GRDC project CWF00018 – Maintaining profitable farming systems with retained stubble in Central West, NSW
  • GRDC project ACT00004 – Application of CTF in the low rainfall zone.

Other trial partners SARDI
Download the trial report to view additional trial information


Crop type
Treatment type(s)
  • Crop
Trial type Demonstration
Trial design Unknown

Rankins Springs 2016

Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified
Download the trial report to view additional method/treatment information
Trial source data and summary not available
Check the trial report PDF for trial results.
Observed trial site soil information
Trial site soil testing
Not specified
Soil conditions
Trial site Soil texture
Site 1, Rankins Springs, NSW Not specified
Derived trial site soil information
Australian Soil Classification Source
Trial site Soil order
Site 1, Rankins Springs, NSW Kandosol
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 1, Rankins Springs NSW

NOTE: Exact trial site locality unknown - Climate data may not be accurate

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

SILO weather estimates sourced from
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.