Impact of retaining stubble

2014
CC BY 4.0

Research organisatons
Funding source

Trial details

Researcher(s) Amanda Cook (SARDI)
Ian Richter (SARDI)
Wade Shepperd (SARDI)
Year(s) 2014
Contributor Eyre Peninsula Agricultural Research Foundation
Trial location(s) Minnipa Agricultural Centre, SA
Impact of retaining stubble locations
Aims

To maintain or improve crop production through applying alternative weed, disease and pest control options in pasture wheat rotations in the presence of crop residues. The trial was established in 2013 with different stubble treatments imposed at harvest and was sown either inter row or in row with wheat in 2014.

Key messages
  • There was a 0.17 t/ha yield advantage in the 2014 season due to removing or cultivating the previous season’s stubble, possibly due to extra nitrogen being available to the crop during the growing season.
  • There was a 0.08 t/ha yield advantage at MAC this season by inter row cropping rather than placing the seed on row.
  • There were no differences in either barley or ryegrass numbers at the start of the cropping season or in crop.
Lead research organisation Eyre Peninsula Agricultural Research Foundation
Host research organisation SARDI Minnipa Agricultural Centre
Trial funding source GRDC EPF00001
Related program Maintaining profitable farming systems with retained stubble
Acknowledgments

Thanks to Roy Latta for establishing this trial in 2013.


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

Method

Crop type Cereal (Grain): Wheat
Treatment type(s)
  • Sowing: Method
  • Stubble: Management
Trial type Experimental
Trial design Replicated

Minnipa Agricultural Centre 2014

Sow rate or Target density 60kg/ha
Sow date 6 May 2014
Harvest date 5 December 2014
Plot size 34m x 2m
Plot replication 3
Fertiliser

18:20:00:0 @ 60kg/ha

Herbicide

Pre seeding chemical applications were sprayseed @ 1.5 L/ha, trifluralin @ 1.5 L/ha and 80 ml/ha Nail. On 25 June Intervix was applied at 700 ml/ha with 500 ml/ha Supercharge for grass control.

Insecticide

Nil

Fungicide

Nil

Download the trial report to view additional method/treatment information

Download results

Trial results Table 1

# Variety
Treatment 1
Plant density (plants/m2) Screenings (%) 1000 grain weight (g) Protein (%) Grain yield (t/ha)
1 Wheat:Grenade CL Stubble standing high 91 3 43.3 10.1 2.4
2 Wheat:Grenade CL Stubble standing low 102 2.5 43.6 10.1 2.45
3 Wheat:Grenade CL Stubble cultivated 94 3.6 42.6 10.1 2.58
4 Wheat:Grenade CL Stubble removed 94 3.8 42.6 10 2.62
5 Wheat:Grenade CL Interow sowing 98 3.2 42.7 10.1 2.55
6 Wheat:Grenade CL In row sowing 92 3.2 43.4 10.1 2.47

Grain yield t/ha


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1000 grain weight g


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Plant density plants/m2


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Protein %


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Screenings %


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Observed trial site soil information
Trial site soil testing
Not specified
Soil conditions
Trial site Soil texture
Minnipa Agricultural Centre, SA Red loam
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Minnipa Agricultural Centre, SA Calcarosol
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 Minnipa Agricultural Centre SA
2014 418.7mm
2013 359.7mm
2012 398.5mm
2011 425.7mm
2010 407.2mm
2009 421.5mm
2008 355.4mm
2007 357.4mm
2006 394.7mm
2005 368.2mm
2004 367.4mm
2003 380.2mm
2002 375.4mm
2001 420.1mm
2000 422.7mm
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.

Minnipa Agricultural Centre SA

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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: 04-06-2019 13:33pm AEST