On-row sowing for brome competition on non-wetting sands - herbicide treatment

2017

Research organisaton
Funding sources

Trial details

Researcher(s) Therese McBeath, Rick Llewellyn, Vadakattu Gupta, Bill Davoren, Willie Shoobridge (CSIRO Agriculture and Food)
Year(s) 2017
Contributor CSIRO - Agriculture and Food
Trial location(s) Site 3, Karoonda, SA
On-row sowing for brome competition on non-wetting sands - herbicide treatment locations
Aims

To test on-row or inter-row seeding with and without a pre-emergent herbicide package of trifluralin + metribuzin

Key messages
  • For the fourth year running, on-row sowing proved it has potential as a brome management tool on non-wetting sands, reducing brome grass seed set by 55%.
  • The use of trifluralin with metribuzin reduced the brome density in July but did not reduce seed set.
  • On-row sowing resulted in more soil water and nitrogen supply potential near the crop,  improved crop establishment and higher crop biomass.
  • On-row sowing did increase root disease incidence, but there were low levels of disease for both on- and inter-row sowing in 2017.
Lead research organisation CSIRO - Agriculture and Food
Host research organisation N/A
Trial funding source GRDC MSF00003
Trial funding source CSIRO
Related program Maintaining profitable farming systems with retained stubble
Acknowledgments

We thank Loller Partners (Karoonda) for hosting the field site and additional technical input from Damian Mowat, Jeff Braun and Michael Moodie. This research is funded by GRDC and CSIRO Agriculture and Food (project MSF00003).


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

Method

Crop type Wheat
Treatment type(s)
  • Herbicide
  • Herbicide: Application
  • Herbicide: Method
Trial type Experimental
Trial design Replicated

Karoonda 2017

Sow rate or Target density Scepter wheat at 70 kg/ha
Sowing machinery

dual shoot narrrow point with 28cm row spacing

Sow date 8 May 2017
Harvest date Not specified
Plot size Not specified
Plot replication Not specified
Fertiliser
  • DAP @ 50 kg/ha and Urea @ 24 kg/ha on a water repellent dune soil.
  • In addition, 33 kg/ha potassium sulfate was applied pre-sowing an in-crop foliar application of Cu, Zn and Mn occurred at early tillering.
Herbicide

1

Treatments

Sowing

Pre-emergent  herbicide

1

On-row

Nil

2

Inter-row

Nil

3

On -row

trifluralin @ 1.5 l/ha + metribuzin @ 100 g/ha

4

Inter-row

trifluralin @ 1.5 l/ha + metribuzin @ 100 g/ha

Other trial notes

Peer Review: Sean Mason (Agronomy Solutions), Sarah Noack (Hart Fieldsite), Jake Giles (SARDI)

Download the trial report to view additional method/treatment information

Download results

Trial results Table 1

@T1: @T2:
# Treatment 1
Brome grass density (plants/m2) Protein (%) Grain yield (t/ha) Establishment plants (plants/m2) Establishment plants (plants/m2)
1 Minus pre-em 31 8.44 1.74 55 91
1 Plus pre-em 15 8.91 1.91 56 66
1
2 On-row 15 8.74 1.99 66 89
2 Inter-row 31 8.61 1.66 44 68
2
4
4
4
5
5
5

Grain yield t/ha


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Brome grass density plants/m2


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Establishment plants plants/m2


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Protein %


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Observed trial site soil information
Trial site soil testing
Site Depth Type pH EC P K N A OC CAT
Site 3, Karoonda, SA 0 - 100cm 65.00
Soil conditions
Trial site Soil texture
Site 3, Karoonda, SA Not specified
Derived trial site soil information
Australian Soil Classification Source
Trial site Soil order
Site 3, Karoonda, SA Calcarosol
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

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Climate

Site 3, Karoonda SA 2017


Observed climate information

Rainfall avg ann (mm) 337mm
Rainfall avg gsr (mm) 237mm
Rainfall trial total (mm) 399mm
Rainfall trial gsr (mm) 236mm

Derived climate information

Site 3, Karoonda 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 last modified: 21-05-2019 14:51pm AEST