Seasonal effects of strategic stubble treatments on wheat and barley in CWFS districts; Year 2 of a 5 year investigation

2014
CC BY 4.0

Research organisatons
Funding source

Trial details

Researcher(s) John Small (CWFS)
Year(s) 2014
Contributor Central West Farming Systems
Trial location(s) Gunning Gap, NSW
Lake Cargelligo, NSW
Nyngan, NSW
Tullamore, NSW
Ungarie, NSW
Seasonal effects of strategic stubble treatments on wheat and  barley in CWFS districts; Year 2 of a 5 year investigation locations
Aims
  • To investigate the impact of different stubble treatments (burning, cultivation or standing stubble) imposed towards the end of the fallow have on the yield of wheat and barley.
  • To evaluate any varietal responses within crop spiecies to the impact of the different stubble treatments.
Key messages

Stubble treatments involving late burning or cultivation resulted in significantly different yields in wheat and barley in 4 to 6 trials conducted at Nyngan, Ungaire, Tullamore, Gunning Gap, Alectown and Lake Cargelligo during 2014. The yield effects were not consistent and these trials could not be used to predict response pre sowing. The effects of stubble treatments observed during 2014 were similar to the effects observed during similar trials in 2013. Variety rankings were not significantly affected by stubble treatments. The best option in terms of yield was to simply grow the variety with the highest potential for the sowing window.

Lead research organisation Grains Research and Development Corporation
Host research organisation N/A
Trial funding source GRDC CWF00018
Related program Maintaining profitable farming systems with retained stubble
Acknowledgments

CWFS would like to acknowledge the support provided by the co- operating farmers,without their in-kind support the trials would not have been possible. The help help from Matt McRae, Walkers Ag N Vet, Forbes at the Gunning Gap site, Greg Brooke, NSW DPI at the Nyngan site and Scott Boyd, GOA, Dubbo at the Tullamore site is also acknowledged. The authors also thank Neil Fettell for his support in compiling this report.


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

Method

Crop types Cereal (Grain): Barley Cereal (Grain): Wheat
Treatment type(s)
  • Crop: Variety
  • Stubble: Management
Trial type Experimental
Trial design Replicated

Gunning Gap 2014 Barley

Sow rate or Target density Not specified
Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified
Fertiliser Not specified
Soil amelioration Not specified
Other trial notes

Cultivation treatment imposed with offset discs. Uneven stubble conditions across the paddock existed on 9 April. Generally it ranged in height from 200 to 300mm high with an average load of 3.5 t/ha, ranging from 1.6 to 6.0 t/ha, ground cover varied from 0 to 100%. It is reasonable to suggest that this variation was due to the way water had drained and settled on the surface during the fallow. The amount of standing stubble averaged 14% of the total load but varied from 4 to 22%. Avail

Gunning Gap 2014 Wheat

Sow rate or Target density Not specified
Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified
Fertiliser Not specified
Soil amelioration Not specified
Other trial notes

Cultivation treatment imposed with offset discs. Uneven stubble conditions across the paddock existed on 9 April. Generally it ranged in height from 200 to 300mm high with an average load of 3.5 t/ha, ranging from 1.6 to 6.0 t/ha, ground cover varied from 0 to 100%. It is reasonable to suggest that this variation was due to the way water had drained and settled on the surface during the fallow. The amount of standing stubble averaged 14% of the total load but varied from 4 to 22%. Avail

Lake Cargelligo 2014 Barley

Sow rate or Target density Not specified
Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified
Fertiliser Not specified
Soil amelioration Not specified
Other trial notes

Cultivation treatment imposed with offset discs. Uneven stubble conditions across the paddock existed on 9 April. Generally it ranged in height from 200 to 300mm high with an average load of 3.5 t/ha, ranging from 1.6 to 6.0 t/ha, ground cover varied from 0 to 100%. It is reasonable to suggest that this variation was due to the way water had drained and settled on the surface during the fallow. The amount of standing stubble averaged 14% of the total load but varied from 4 to 22%. Avail

Lake Cargelligo 2014 Wheat

Sow rate or Target density Not specified
Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified
Fertiliser Not specified
Soil amelioration Not specified
Other trial notes

Cultivation treatment imposed with offset discs. Uneven stubble conditions across the paddock existed on 9 April. Generally it ranged in height from 200 to 300mm high with an average load of 3.5 t/ha, ranging from 1.6 to 6.0 t/ha, ground cover varied from 0 to 100%. It is reasonable to suggest that this variation was due to the way water had drained and settled on the surface during the fallow. The amount of standing stubble averaged 14% of the total load but varied from 4 to 22%. Avail

Nyngan 2014 Barley

Sow rate or Target density 35kg/ha
Sow date 7 May 2014
Harvest date 3 November 2014
Plot size Not specified
Plot replication 3
Fertiliser

7/5/2014: 63kg/ha MAP fertiliser into moist seedbed with good subsoil moisture.

Soil amelioration

9/4/2014: Stubble treatments imposed.

Other trial notes

Cultivation treatment imposed with offset discs. Uneven stubble conditions across the paddock existed on 9 April. Generally it ranged in height from 200 to 300mm high with an average load of 3.5 t/ha, ranging from 1.6 to 6.0 t/ha, ground cover varied from 0 to 100%. It is reasonable to suggest that this variation was due to the way water had drained and settled on the surface during the fallow. The amount of standing stubble averaged 14% of the total load but varied from 4 to 22%. Avail

Nyngan 2014 Wheat

Sow rate or Target density Not specified
Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified
Fertiliser Not specified
Soil amelioration Not specified
Other trial notes

Cultivation treatment imposed with offset discs. Uneven stubble conditions across the paddock existed on 9 April. Generally it ranged in height from 200 to 300mm high with an average load of 3.5 t/ha, ranging from 1.6 to 6.0 t/ha, ground cover varied from 0 to 100%. It is reasonable to suggest that this variation was due to the way water had drained and settled on the surface during the fallow. The amount of standing stubble averaged 14% of the total load but varied from 4 to 22%. Avail

Tullamore 2014 Barley

Sow rate or Target density Not specified
Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified
Fertiliser Not specified
Soil amelioration Not specified
Other trial notes

Cultivation treatment imposed with offset discs. Uneven stubble conditions across the paddock existed on 9 April. Generally it ranged in height from 200 to 300mm high with an average load of 3.5 t/ha, ranging from 1.6 to 6.0 t/ha, ground cover varied from 0 to 100%. It is reasonable to suggest that this variation was due to the way water had drained and settled on the surface during the fallow. The amount of standing stubble averaged 14% of the total load but varied from 4 to 22%. Avail

Tullamore 2014 Wheat

Sow rate or Target density Not specified
Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified
Fertiliser Not specified
Soil amelioration Not specified
Other trial notes

Cultivation treatment imposed with offset discs. Uneven stubble conditions across the paddock existed on 9 April. Generally it ranged in height from 200 to 300mm high with an average load of 3.5 t/ha, ranging from 1.6 to 6.0 t/ha, ground cover varied from 0 to 100%. It is reasonable to suggest that this variation was due to the way water had drained and settled on the surface during the fallow. The amount of standing stubble averaged 14% of the total load but varied from 4 to 22%. Avail

Ungarie 2014 Barley

Sow rate or Target density Not specified
Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified
Fertiliser Not specified
Soil amelioration Not specified
Other trial notes

Cultivation treatment imposed with offset discs. Uneven stubble conditions across the paddock existed on 9 April. Generally it ranged in height from 200 to 300mm high with an average load of 3.5 t/ha, ranging from 1.6 to 6.0 t/ha, ground cover varied from 0 to 100%. It is reasonable to suggest that this variation was due to the way water had drained and settled on the surface during the fallow. The amount of standing stubble averaged 14% of the total load but varied from 4 to 22%. Avail

Ungarie 2014 Wheat

Sow rate or Target density Not specified
Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified
Fertiliser Not specified
Soil amelioration Not specified
Other trial notes

Cultivation treatment imposed with offset discs. Uneven stubble conditions across the paddock existed on 9 April. Generally it ranged in height from 200 to 300mm high with an average load of 3.5 t/ha, ranging from 1.6 to 6.0 t/ha, ground cover varied from 0 to 100%. It is reasonable to suggest that this variation was due to the way water had drained and settled on the surface during the fallow. The amount of standing stubble averaged 14% of the total load but varied from 4 to 22%. Avail

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
Gunning Gap, NSW Not specified
Lake Cargelligo, NSW Not specified
Nyngan, NSW Clay loam
Tullamore, NSW Not specified
Ungarie, NSW Not specified
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Gunning Gap, NSW Sodosol
Lake Cargelligo, NSW Sodosol
Nyngan, NSW Kandosol
Tullamore, NSW Sodosol
Ungarie, NSW Kandosol
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 Gunning Gap NSW Lake Cargelligo NSW Nyngan NSW Tullamore NSW Ungarie NSW
2014 209.8mm209.8mm538.5mm552.4mm569.1mm
2013 207.7mm207.7mm527.1mm575.4mm578.1mm
2012 250.7mm250.7mm600.8mm580.6mm610.2mm
2011 324.5mm324.5mm617.7mm583.9mm604.2mm
2010 408.5mm408.5mm641.8mm618.1mm642.6mm
2009 408.1mm408.1mm615.3mm596.7mm599.2mm
2008 430.9mm430.9mm611.1mm595.8mm596.5mm
2007 444.9mm444.9mm603.0mm586.5mm502.8mm
2006 442.5mm442.5mm578.7mm575.8mm535.7mm
2005 470.6mm470.6mm600.0mm599.0mm577.3mm
2004 456.3mm456.3mm612.0mm613.7mm524.9mm
2003 438.1mm438.1mm604.7mm591.6mm494.3mm
2002 400.8mm400.8mm583.4mm587.0mm409.1mm
2001 415.7mm415.7mm594.8mm594.7mm398.2mm
2000 466.5mm466.5mm561.5mm553.7mm408.9mm
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.

Gunning Gap NSW

Lake Cargelligo NSW

Nyngan NSW

Tullamore NSW

Ungarie NSW

Gunning Gap NSW

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Lake Cargelligo NSW

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Nyngan NSW

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Tullamore NSW

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Ungarie NSW

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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

2014 trial report



Trial last modified: 26-11-2019 14:54pm AEST