Summer weeds

Controlling summer weeds is a key strategy to conserving moisture and nutrients for the subsequent crop. This is a common practice implemented across medium to low rainfall cropping zones of Australia.

OFT contains more than 90 trials that have explored issues on managing summer weeds, including herbicide and tillage strategies, the use of herbicides and adjuvants and the latest spraying technologies including spot spraying. Trials covering particular weed varieties include: Awnless barnyard grass, Feathertop Rhodes grass, Liverseed grass, Wild radish, Stink grass and Fleabane. In tackling summer weeds, trials exploring aspects of residual herbicide effects on following crops are also provided.

For further information on summer weed management, refer to the following article from GRDC GroundCover:

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118 total results found Matching the current search filters and located within the visible map area.

115 results have a trial report available
42 results have export data available
71 trials are CC BY 4.0
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Aims:

To determine the impact of grazing on soil condition and weed populations.  This report is on findings after two years of grazing. 

Crop type: Wheat,Barley,Canola 4 trials Grazing Regime Grazing Timing
Inverleigh, VIC Lake Bolac, VIC Werneth, VIC
Research organisaton
Funding sources

Aims:

To assess the effectiveness of a range of summer weed control options. The subsequent effect on yield as a result of weed control.

Crop type: Wheat 1 trial Herbicide Type Soil
East Maya, WA
Research organisaton

Aims:

  • Conduct 197 in-paddock surveys in both 2019-20 and 2020-21 to identify the composition of summer weed species present across the GRDC Western region covering the 6 eco-agricultural zones.
  • expand the understanding of WA’s current in-paddock summer weed flora
  • better inform possible future initiatives on identificati… read more

Crop type: Fallow 3 trials Crop Protection
Western Australia, WA
Source Data Unavailable
Important Caution The results of this trial may have been impacted by unusual or adverse events
Weeds
Research organisaton
Funding source

Aims:

To compare five control practices to determine the best weed management strategy for summer months on this particular soil type.

Crop type: Wheat 1 trial Stubble Management
Narraport, VIC
Source Data Unavailable
Research organisaton

Aims:

To determine which summer weed control method is most efficient and economical.

Crop type: Wheat 1 trial Herbicide Type
Watchupga East, VIC
Source Data Unavailable
Research organisaton

Aims:

The aim of this trial was to determine the best options for controlling summer weeds using residual and knockdown herbicides with different adjuvants. 

Crop type: No crop specified 1 trial Herbicide Type Herbicide Method
Watchupga East, VIC
Source Data Unavailable
Research organisaton

Aims:

To discuss summer weed control options.

Crop type: Wheat,Canola 2 trials Soil Preparation
Charlton, VIC
Source Data Unavailable
Research organisaton

Aims:

To investigate the effectiveness of a number of herbicide treatments for the control of summer weeds such as heliotrope, padi melons and medic.

Crop type: No crop specified 1 trial Herbicide Type Herbicide Rate
Watchupga East, VIC
Source Data Unavailable
Research organisaton

Aims:

To discuss how to keep summer weed control cost effective.

Crop type: No crop specified 1 trial Herbicide Application
Birchip, VIC
Source Data Unavailable
Research organisaton

Aims:

To evaluate the economic benefit and effectiveness of different herbicide treatments on mixture of summer grassses and melons.

Crop type: No crop specified 1 trial Herbicide Type Herbicide Rate
Kalannie, WA
Research organisaton

Aims:

To measure the efficacy of coarser spray droplets on the control of two identified common summer weed species, and the influence of more adverse weather conditions.

Crop type: Barley 2 trials Herbicide Herbicide Application Herbicide Method
, SA
Source Data Unavailable
Research organisaton
Funding source

Aims:

To measure the loss of soil water attributed to summer weeds and to quantify the impact of summer weeds on lost production.

Crop type: No crop specified 2 trials No treatment
Jil JIl, VIC
Source Data Unavailable
Research organisaton

Aims:

  • 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.

Crop type: Wheat 1 trial Herbicide Type Herbicide Rate
Mullewa, WA
Research organisaton

Aims:

  • 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.

Crop type: Wheat 1 trial Herbicide Type Herbicide Rate
Mullewa, WA
Research organisaton

Aims:

  • 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.

Crop type: Wheat 1 trial Herbicide Type Herbicide Rate
Mullewa, WA
Source Data Unavailable
Research organisaton

Aims:

To evaluate efficacy of residual herbicides against summer weeds in fallow.

Crop type: Fallow 1 trial Herbicide Type
Maules Creek, NSW
Source Data Unavailable
Research organisaton
Funding source

Aims:

To evaluate efficacy of residual herbicides against summer weeds in fallow.

Crop type: Grasses 1 trial Herbicide Type
Billa Billa, QLD
Source Data Unavailable
Research organisaton
Funding source

Aims:

To evaluate efficacy of residual herbicides against summer weeds in fallow.

Crop type: Fallow 1 trial Herbicide Type
Walgett, NSW
Source Data Unavailable
Research organisaton
Funding source

Aims:

To evaluate efficacy of residual herbicides against summer weeds in fallow.

Crop type: Fallow 1 trial Herbicide Type
Gilgandra, NSW
Source Data Unavailable
Research organisaton
Funding source

Aims:

To evaluate a number of commercially available adjuvants to accompany glyphosate for summer weed control.

Crop type: No crop specified 1 trial Herbicide Method
Kooloonong, VIC
Source Data Unavailable
Research organisaton

Aims:

To test the tolerance of the new strand medic, Angel, to sulfonylurea (SU) herbicide residues from a summer weed application.

Crop type: Medic 1 trial Herbicide Herbicide Application Variety Variety Type
Walpeup, VIC
Source Data Unavailable
Research organisaton

Aims:

  • To evaluate the suitability of "spot spray" technology to control weeds on farming land in the Upper North.
  • To monitor weed control success on "hard to control" summer weeds such as fleabane, onion weed, saltbush type weeds.
  • To record the reduction in pesticide and water use using "spot spra… read more

Crop type: No crop specified 1 trial Herbicide Application
Jamestown, SA
Source Data Unavailable
Research organisaton
Funding sources
McAg Consulting <abbr title='Upper North Farming Systems'>UNFS</abbr>

Aims:

To quantify how paddock stubble load and weed burden during summer can affect available soil water, nutrients and subsequent crop yield.

Crop type: Wheat 1 trial Stubble Management
Hopetoun, VIC
Research organisaton
Funding source

Aims:

To monitor moisture retention and nitrogen accumulation under cultivated and chemical fallow regimes.

Crop type: Wheat 1 trial Soil Preparation
Birchip, VIC
Source Data Unavailable
Research organisaton

Aims:

To test whether sheep grazing in no-till systems damages soil and reduces crop yields.

Crop type: Wheat,Lucerne,Canola 6 trials Grazing Regime Stubble Management
Condobolin, NSW Temora, NSW
Research organisaton
Funding source

Aims:

To discuss soil conservation and land use.

Birchip, VIC
Source Data Unavailable
Research organisaton

Aims:

To quantify the effect of paddock stubble management and weed burden during the summer fallow on crop available soil water, nutrients and yield.

Crop type: Lentils 1 trial Soil Type Stubble Management
Hopetoun, VIC
Research organisaton
Funding source

Aims:

To inform readers about weed sensing: the use of a machine or instrument to detect a weed; a plant that shouldn’t be there

Crop type: No crop specified 1 trial Crop Protection
Loxton, SA
Source Data Unavailable
Research organisaton
Funding source

Aims:

To quantify how paddock stubble load and weed burden during summer can affect soil water, nutrients and subsequent crop yield.

Crop type: Barley 12 trials Stubble
Charlton, VIC Hopetoun, VIC Kerang, VIC Longerenong, VIC Swan Hill, VIC Walpeup, VIC
Source Data Unavailable
Research organisaton
Funding source

Aims:

To identify some herbicide options for controlling Rosinweed.

Crop type: No crop specified 1 trial Herbicide Type Herbicide Rate Herbicide Timing
Birchip, VIC
Source Data Unavailable
Research organisaton

Aims:

To demonstrate how managing paddock stubble load and weed burden (paddock surface conditions) during summer can affect subsequent crop yield.

Crop type: Wheat 1 trial Herbicide Application Stubble Stubble Management
Curyo, VIC
Source Data Unavailable
Research organisaton
Funding source

Aims:

To demonstrate the effectiveness of weed sensing technology (WeedSeeker) for controlling problematic low population weeds (e.g. Prickly Lettuce).

Crop type: No crop specified 1 trial Herbicide Application
Birchip, VIC
Research organisaton
Funding source

Aims:

To present the main messages from the agronomy trial work undertaken in 2005.

Crop type: Chickpeas,Canola 2 trials No treatment
Birchip, VIC
Source Data Unavailable
Research organisaton

Aims:

  • To assess herbicide treatments on mixed winter weeds in an early / long spray fallow.
  • To identify alternative herbicides to control weeds that have or are developing resistance to traditional herbicides used in winter weed control.
  • To identify possible alternative herbicide mixtures that could be effective in a low … read more

Crop type: No crop specified 1 trial Herbicide Type
Tenindewa, WA
Source Data Unavailable
Research organisaton

Aims:

  • To assess herbicide treatments on mixed winter weeds in an early / long spray fallow.
  • To identify alternative herbicides to control weeds that have or are developing resistance to traditional herbicides used in winter weed control.
  • To identify possible alternative herbicide mixtures that could be effective in a low … read more

Crop type: No crop specified 1 trial Herbicide Type
Tenindewa, WA
Source Data Unavailable
Research organisaton

Aims:

  • To assess herbicide treatments on mixed winter weeds in an early / long spray fallow.
  • To identify alternative herbicides to control weeds that have or are developing resistance to traditional herbicides used in winter weed control.
  • To identify possible alternative herbicide mixtures that could be effective in a low … read more

Crop type: No crop specified 1 trial Herbicide Type
Tenindewa, WA
Source Data Unavailable
Research organisaton

Aims:

  • To assess herbicide treatments on mixed winter weeds in an early / long spray fallow.
  • To identify alternative herbicides to control weeds that have or are developing resistance to traditional herbicides used in winter weed control.
  • To identify possible alternative herbicide mixtures that could be effective in a low … read more

Crop type: No crop specified 1 trial Herbicide Type
Tenindewa, WA
Source Data Unavailable
Research organisaton

Aims:

To investigate the response to nitrogen fertiliser on wheat.

Crop type: Wheat 3 trials Fertiliser Form Fertiliser Application
Birchip, VIC Charlton, VIC Sea Lake, VIC
Source Data Unavailable
Research organisaton

Aims:

To investigate management options which reduce the risk of failure when growing wheat on wheat, or barley on wheat stubble.

Crop type: Barley,Wheat 6 trials Crop Rotation Stubble Management
Birchip, VIC Charlton, VIC Rupanyup, VIC
Source Data Unavailable
Research organisaton

Aims:

To improve the long term control of Rhizoctonia by increasing the understanding of the interactions between disease inoculum and natural soil suppressive activity and to improve the prediction and management of disease.

Crop type: Barley,Wheat,Medic,Canola 4 trials Crop Type Soil Preparation
Streaky Bay, SA
Source Data Unavailable
Research organisaton
Funding source

Aims:

To evaluate the influence of perennial row spacing and grass suppression on the performance of serradella summer sown into subtropical perennial-grass pastures.

Crop type: Serradella 1 trial Sowing Row spacing
Regans Ford, WA
Source Data Unavailable
Research organisatons
Funding sources

Aims:

Test benefits of ribbon sowing to improve yield of very wide rows in a dry season when sowing onto deep moisture.

Crop type: Wheat 1 trial Sowing Method Sowing Row spacing
Tardun, WA
Research organisaton

Aims:

To test the effect of ploughing in stubble prior to seeding.

Crop type: Wheat 1 trial Soil Type Stubble Management
East Maya, WA
Research organisaton

Aims:

To evaluate herbicides for the residual control of summer fallow weeds.

Crop type: Fallow 1 trial Herbicide Type
Gilgandra, NSW
Source Data Unavailable
Research organisaton
Funding source

Aims:

To evaluate herbicides for the residual control of summer fallow weeds.

Crop type: Fallow 1 trial Herbicide Type
Milguy, NSW
Source Data Unavailable
Research organisaton
Funding source

Aims:

To evaluate herbicides for the residual control of summer fallow weeds.

Crop type: Fallow 1 trial Herbicide Type
Tulloona, NSW
Source Data Unavailable
Research organisaton
Funding source

Aims:

To evaluate herbicides for the residual control of summer fallow weeds.

Crop type: Fallow 1 trial Herbicide Type
Maules Creek, NSW
Source Data Unavailable
Research organisaton
Funding source

Aims:

To evaluate alternative chemistry for fallow knockdown control of summer grass weeds. Specifically Feathertop Rhodes Grass and Button Grass.

Crop type: Fallow 2 trials Herbicide
Crooble, NSW
Research organisaton
Funding source

Aims:

To evaluate alternative chemistry for fallow knockdown control of summer grass weeds.

Crop type: Fallow 1 trial Herbicide Rate Herbicide Timing
Dalby, QLD
Research organisaton
Funding source

Aims:

To evaluate residual herbicide tank mixtures for broad spectrum summer fallow weed management.

Crop type: Fallow 1 trial Herbicide
Bowenville, QLD
Research organisaton
Funding source