Mullewa trials - herbicides for selective spot spraying application on summer weeds - Roly Poly


Research organisaton

Trial details

Researcher(s) Grant Thompson (Crop Circle Consulting)
Year(s) 2010
Contributor North East Farming Futures
Trial location(s) Site 4, Mullewa, WA
Mullewa trials - herbicides for selective spot spraying application on summer weeds -  Roly Poly locations
  • To assess current and novel herbicides and mixes at elevated rates to achieve fast control of summer weeds through weedseeker selective spot spraying..
  • To plant trial plots to wheat to assess carryover or plantback issue with these treatments.
Key messages
  • Weed sensing and selective spot spraying with machinery such as the WEEDSEEKER and WEED-IT selective spot sprayers has allowed for very cost effective broadacre spot spraying of weeds without spraying the whole pad-dock area.
  • Selective spot spraying of hard to kill summer weeds is one application where this technology has a potential to save growers significant funds usually allocated to herbicides.
  • Elevated rates of non-traditional or previously cost prohibited herbicides of a different resistance group can now be used to achieve much more reliable and faster control of weeds.
  • Alliance, Gramoxone, Basta, Roundup Powermax and Ally provided acceptable levels of control on large Roly Poly at high rates suitable for selective spot spraying.
  • Hammer and Sharpen did not provide acceptable control of Roly Poly after initial impressive weed burndown.
  • Roundup Powermax, Garlon, Grazon, Kamba 500 and Tordon 75D all provided excellent Afghan Melon control.
  • Grazon, Kamba 500 and Tordon 75D caused herbicide toxicity issues in the wheat crop as per trial report.
Lead research organisation North East Farming Futures
Host research organisation N/A
Related program N/A
  • Grant Thompson, Crop Circle Consulting.
  • Bill Campbell, Nufarm
  • Bernie Quade, Landmark
  • Daisy Downs – C Crawford

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


Crop type Wheat
Treatment type(s)
  • Herbicide: Type
  • Herbicide: Rate
Trial type Experimental
Trial design Replicated

Mullewa 2010

Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified

Glyphosate 540 g/L, Gramoxone, Basta , Alliance, Ally, Kamba 500, Garlon,Grazon, Tordon 75D, Hammer, Estericide 680, Diuron Sc 500g/L, Hotshot, Sharpen, Bonza oil.

Download the trial report to view additional method/treatment information

Download results

Trial results Table 1

@T1: @T2:
# Treatment 1
Control level (value) Control level (value)
1 Garlon 200ml+Bonza 1% 6 4
1 Garlon 1000ml+Bonza 1% 5 5
2 Roundup Pmax 10000ml 10 10
2 Hammer 125ml+BS1000 0.1% 5 5
3 Paraquat 250 10000ml 10 10
3 Grazon 300ml+Bonza 1% 3 2
4 Grazon 1000ml+Bonza 1% 5 5
4 Sharpen 500ml+Bonza 1% 6 3
5 Diuron 5000ml+BS100 0.1% 1 0
5 Starane advance 900ml+Rup Powermax 3000ml+BS1000 0.1% 7 5
6 Alliance 10000ml 10 10
6 Basta 10000ml 10 10
7 Ester 680 10000ml+Bonza 1% 6 8
7 Metsulfuron 20g+Bonza 1% 10 10
8 Tordon 75D 1000ml+Bonza 1% 7 6
8 Tordon 75D 10000ml+Bonza 1% 6 6
9 Alliance 10000ml+Ester 680 2000ml+Bonza 1% 10 10
9 Powermax 5000ml+Ester 680 2000ml+Garlon 300ml+Ally 5g+LI700 N/A N/A
10 Kamba500 4000ml+Bonza 1% 6 4
10 Hotshot 3000ml 5 4

Control level value

Observed trial site soil information
Trial site soil testing
Not specified
Soil conditions
Trial site Soil texture
Site 4, Mullewa, WA Not specified
Derived trial site soil information
Australian Soil Classification Source
Trial site Soil order
Site 4, Mullewa, WA Tenosol
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 4, Mullewa WA


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.

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Trial last modified: 25-06-2019 11:51am AEST