Establishing canola into incorporated stubble


Research organisatons
Funding source

Trial details

Researcher(s) Damian Jones (Irrigated Cropping Council)
Year(s) 2016
Contributor Irrigated Cropping Council
Trial location(s) Site 2, Kerang, VIC
Establishing canola into incorporated stubble locations

To improve soil carbon through the incorporation of cereal stubbles with no impact on the subsequent canola crop.

Key messages

A combination of fertiliser inputs and irrigation can rapidly breakdownincorporated cereal stubble and allow sowing 4 weeks later. Getting the balance of fertiliser, in particular N rates, to ensure rapid breakdown, but creating neither N deficiency or excessive N remains elusive.

Measuring soil organic carbon following incorporation is giving mixed results as to the ability to increase soil OC via incorporation with fertiliser

Burning the stubble gave greater yield and oil content

Lead research organisation Birchip Cropping Group
Host research organisation Irrigated Cropping Council
Trial funding source GRDC BWD00024
Related program Maintaining profitable farming systems with retained stubble
Acknowledgments N/A
Other trial partners Not specified
Download the trial report to view additional trial information


Crop type Canola
Treatment type(s)
  • Crop: Rotation
  • Fertiliser: Rate
  • Stubble: Management
Trial type Experimental
Trial design Replicated

Kerang 2016

Sow rate or Target density 40 plants/m2
Sowing machinery

Spread, seed mixed with DAP

Sow date 18 April 2016 Mid April
Harvest date 29 November 2016 Late November
Plot size 15m x 4m
Plot replication 3
Paddock history Barley 2015

Stubble incorporation

15/03/2016: 240 kg urea/ha

15/03/2016: 150 kg Triple Super/ha



18/04/2016: 125 kg DAP/ha

16/06/2016: 150 or 210 kg urea/ha

29/07/2016: 130 kg urea/ha


16/06/2016: 0.9 kg/ha Roundup Plantshield

29/07/2016: 0.9 kg/ha Roundup Plantshield

Download the trial report to view additional method/treatment information

Download results

Trial results Table 1

# Variety
Treatment 1
Treatment 2
Oil (%) Lodging (0-9) Grain yield (t/ha)
1 GT50 Stubble incorporated + 240 kg/ha urea Topdressed 150 + 130 kg urea/ha 41.3 7 2.5
2 GT50 Stubble incorporated + 240 kg/ha urea Topdressed 210 + 130 kg urea/ha 42.2 6 2.9
3 GT50 Stubble burnt, no N Topdressed 210 + 130 kg urea/ha 44.1 2.5 3.3
4 GT50 Stubble burnt, no N Topdressed 150 + 130 kg urea/ha 46 1 3.4

Grain yield t/ha


Lodging 0-9


Oil %

Observed trial site soil information
Trial site soil testing
Site Depth Type pH EC P K N A OC CAT
Site 2, Kerang, VIC 0 - 10cm 62.00 1.10
Site 2, Kerang, VIC 0 - 60cm 3.00
Soil conditions
Trial site Soil texture
Site 2, Kerang, VIC Vertisol
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Site 2, Kerang, VIC Vertosol
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 2, Kerang VIC
2016 580.3mm
2015 540.8mm
2014 579.3mm
2013 586.9mm
2012 588.1mm
2011 602.5mm
2010 613.7mm
2009 533.8mm
2008 477.7mm
2007 431.2mm
2006 424.8mm
2005 428.4mm
2004 381.2mm
2003 367.1mm
2002 347.9mm
2001 424.8mm
2000 430.4mm
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



Site 2, Kerang VIC 2016

Observed climate information

Rainfall avg ann (mm) 375mm
Rainfall avg gsr (mm) 232mm
Rainfall trial total (mm) 470.5mm
Rainfall trial gsr (mm) 340.3mm

Derived climate information

Site 2, Kerang VIC


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.

Trial last modified: 06-09-2017 11:26am AEST