trials

• To evaluate and compare the weed control and yield of Sakura with commercial standards.
• To demonstrate efficacy & crop safety of Sakura when sown with grower’s machinery.

To demonstrate the efficacy and crop safety of Velocity® and Precept® 300EC applied alone or in tank mixtures compared to currently available standards for the control of wild radish in wheat.

This research aims to investigate the effect of wheat time of sowing and seeding rate, on the effectiveness and degradation of pre-emergent herbicides commonly used to control annual ryegrass in no tillage farming systems.

Barley grass is becoming an increasingly problematic weed in Western Australia. A GRDC funded project sought to increase adoption of integrated weed management tactics for barley grass, by working with grower groups to develop regionally appropriate rotations for optimal control.

A survey indicated that in growers in the northern wheatbelt felt that barley grass was most likely to be a major problem in pasture, and a common response is use of Group A herbicide to remove grass in pasture. However, given how easy it is to develop Group A resistance, the group wanted to investigate other chemical and non-chemical options in pasture, as well as the impact of late seeding and pre-emergent herbicide for barley grass control in crop.

This three year trial aimed to investigate slashing and spray topping in pasture in 2019, and then time of sowing and pre-emergent herbicides in wheat in 2020 and canola in 2021.

This trial was designed to investigate the crop growth, yield and gross margin response of a number of wheat varieties commonly grown in the district to changes in management input strategy.

To identify herbicide sensitivities of new lupin varieties with the view to reduce their yield losses due to herbicide damage. Mandelup was included as a standard variety for comparison in the trial.

Blue lupins are problematic in narrow leave lupin production, especially in the Northern Agriculture Region of WA Wheatbelt and no herbicide is registered for their control in this crop. There were earlier reports that blue lupins could be controlled/suppressed with triclopyr (e.g. Garlon®) safely applied at pod setting on main stem of narrow leave lupins (Quinlan and Fleay, 2016). Two timing of application of Garlon® at 30 mL/ha were included in the trial to determine their safety on new narrow leafed lupin varieties.

A four-year study has investigated if lime applied in a low pH soil could enhance the efficacy of herbicides on wild radish and improve crop performance in a wheat-wheat-lupin-barley rotation at the Wongan Hills Research Station, Western Australia (WA).

To compare the efficacy and crop safety of different herbicide options for control of grasses in barley.

Barley grass is becoming an increasingly problematic weed in Western Australia. A GRDC funded project sought to increase the adoption of integrated weed management tactics for barley grass, by working with grower groups to develop regionally appropriate rotations for optimal control. 

Barley grass at high density reduces crop yield. However, GRDC project UA00156 (Seed bank ecology of emerging weeds) has highlighted that barley grass ecotypes in Western Australia are often short, and are likely to be highly sensitive to crop competition. Initial control with pre-emergent herbicides combined with high seeding rates in cereal crops may be sufficient to control this species.

This trial aimed to investigate pre-emergent herbicides and high-density crop seeding in barley crops. The trial was run in two separate fields in 2020 and 2021, on a single farm.

To evaluate and compare the effectiveness of standard post emergent herbicide treatments against the Clearfield™ system with Intervix herbicide for control of brome grass and radish in the new two gene wheat Justica CL.

To evaluate the effect of water rate using a medium spray quality on bromoxynil based herbicides under conditions where coverage is not optimal; to evaluate the effect of coarse droplets; and to evaluate the effect on wild radish control at different water rates with MCPA in tank mixtures with Velocity.

To demonstrate the metribuzin tolerance of the new lupin variety Mandelup.

To compare the effect of croptopping on Mandelup with other currently grown lupin varieties.

To investigate herbicide options for the control of iceplant.

To determine optimal input packages for noodle wheats in Buntine.

To examine the effect of increasing inputs for crop varieties representing APW wheat, oats, triticale and a new wheat investigating the prospects for ethanol production from wheat, on profitability for growers on a sandy soil with a highly acidic subsoil in the Liebe Group area.

• To demonstrate the influence of rainfall on Sakura uptake.
• To highlight the influence of a drying top soil when weeds have already germinated prior to application of Sakura.
• To influence of rainfall to carry herbicide to soil active zone.
• To make a comparison between root (Sakura) and shoot uptake herbicides (trifluralin, Boxer Gold®, Avadex® Xtra) efficacy including residual control over time.

To demonstrate, compare and analyse the efficacy of new herbicide combinations and sequences to achieve control of hard to kill weeds such as ryegrass and radish, whilst maximising yield in hybrid canola, using the hybrid variety Hyola 525RT (Roundup Ready + Triazine Tolerant) canola herbicide tolerant system.

To assess herbicide options to control button grass during summer.

• 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 area selective spot spraying scenario with weed seeker technology.
• To identify other modes of action for control of resistant weeds other than Glyphosate.

• 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 area selective spot spraying scenario with weed seeker technology.
• To identify other modes of action for control of resistant weeds other than Glyphosate.

• 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 area selective spot spraying scenario with weed seeker technology.
• To identify other modes of action for control of resistant weeds other than Glyphosate.

• 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 area selective spot spraying scenario with weed seeker technology.
• To identify other modes of action for control of resistant weeds other than Glyphosate.

To assess a range of knockdown herbicide mixtures on small grasses and mixed braod leaf weeds.

Barley grass is becoming an increasingly problematic weed in Western Australia. A GRDC funded project sought to increase the adoption of integrated weed management tactics for barley grass, by working with grower groups to develop regionally appropriate rotations for optimal control.

A survey indicated that growers in the southern lakes region of Western Australia often had pasture as the main rotation choice after cereal. In contrast to other areas of the wheat belt, some growers in this region considered barley grass a valuable (early) feed in pasture as well as a weed in crops. However, growers found that barley grass could have a large impact on crop yield. Growers were interested in either controlling barley grass or suppressing barley grass in crops while allowing it to survive in pasture.

Most group members felt their barley grass was resistant to herbicides (especially low-level resistance to Group A, Targa^®). However, growers were unwilling to stop using Targa^®, even if efficiency was reduced against barley grass, as it effectively controlled other grass weeds. Growers wanted to pair Targa^® with other products in the pasture to kill barley grass, and then control surviving barley grass in crop with best practice pre-seeding herbicides.

The trial aimed to investigate pasture barley grass control in 2019, pre-emergent herbicides in barley in 2020 and oats in 2021.

To examine the effect of increasing inputs to three commonly grown cereal varieties representing APW, noodle and malt segregations, and a new wheat investigating the prospects for ethanol production from wheat, on profitability for growers in the Liebe Group area.

• To compare the efficacy of commercial pre-emergent herbicides and mixtures for ARG control across multiple soil types using grower machinery for seeding and ongoing management consistent with the grower’s practice.
• To determine yield and $ return on investment to the grower from current standard pre-emergent herbicides Sakura, trifluralin, Avadex Xtra and Boxer Gold with new options such as standalone prosulfocarb, the main component of Boxer Gold. Prosulfocarb (e.g. Arcade) must be incorporated within 7 days of application.

The objective of this demonstration was to evaluate the biological compatibility and crop safety of Axial compared with Achieve or Wildcat, when applied alone or in mixtures with common broadleaf herbicides for early wild oat and wild radish control in wheat.

Liming is proven to be beneficial to our cropping and pasture systems in WA; is improved radish control an added gain?

To demonstrate the crop safety and efficacy of Sakura 850WG pre-emergent herbicide on barley grass (Hordeum leporinum) in wheat compared to commercially available herbicides.

The objective of this trial was to evaluate the knockdown efficiency of Spray.Seed with and without common tank mix ‘spikes’, at various rates, on the control of grass and broadleaf weeds including Roundup Ready canola volunteers.

This research aims to investigate the effect of wheat time of sowing and seeding rate, on the effectiveness and degradation of pre-emergent herbicides commonly used to control annual ryegrass in no tillage farming systems.

To find herbicide options that may be safe to use in saltland pasture systems wherein a farmer can maintain the productive capacity of his saltland by controlling his weeds. Trials also aim to explore weed control options during saltbush germination.

To investigate herbicide control options for Slender Iceplant (Mesembryanthemum nodiflorum). The focus is on finding possible herbicide options that may allow for legume and grass pastures between bluebush or saltbush.

Herbicide and application timing alternatives to control annual ryegrass and other weeds in fence lines and prevent the onset of resistance.

To evaluate the crop safety and knockdown survivor wild radish control of Velocity solo and in tank mixtures with higher rates.

To evaluate the efficacy of Precept and other post emergent herbicides for wild radish control in a suspected Group B & I population.

To highlight the effectiveness of summer weed control in conserving soil moisture for winter cereal cropping in the Central-Eastern Wheatbelt of WA.

To see if herbicide strategies can be developed that will reduce the heavy reliance that growers in the Northern Agricultural Region now place on the key active pyrosulfatole, found in the products Velocity and Precept.

To understand the stages of resistance development within wild radish populations and to develop strategies from a grower’s perspective for growing weed free crops in the presence of resistant radish.

Barley grass is becoming an increasingly problematic weed in Western Australia. A GRDC funded project sought to increase the adoption of integrated weed management tactics for barley grass, by working with grower groups to develop regionally appropriate rotations for optimal control.

A survey indicated that in the central-eastern wheatbelt, barley grass is mainly an issue in pasture. While barley grass also grows in crops, it is rarely the most prominent cropping weed. The KDG group aimed to investigate grass selective herbicides and late-season control in pasture, and pre-emergent herbicides in-crop, to find the best combination of practices that would control barley grass while also removing other grass weed species in a three-year rotation.

The trial aimed to investigate Group 1 herbicides and spray topping in 2019, pre-emergent herbicides and knockdowns in 2020 and Group 2 herbicides and spray topping in 2021.

• 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.

• 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.

• 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.

To investigate herbicide control options for Slender Iceplant (Mesembryanthemum nodiflorum). The focus is on finding possible herbicide options that may allow for legume and grass pastures between bluebush or saltbush.

Assess the yield impact of different summer spray application timings at four trials in March 2017, following a widespread summer rainfall event.

To compare efficacy of new and old herbicides and herbicide mixtures for broadleaf weed control in chickpea.

To identify herbicide sensitivities of new or potential new chickpea varieties with the view to reduce their yield losses due to herbicide damage.

To identify herbicide sensitivities of new lentil varieties with the view to reduce their yield losses due to herbicide damage.

To demonstrate differences between sprayed and unsprayed plots from December 2012 to February 2013 for RCSN Kwinana East Port Zone trial locations.

To determine the effectiveness, weed spectrum and crop damage of both Bounty (a broadleaf herbicide for use in lupins) and Aramo (a grass herbicide for use in non-cereal crops), which are due for release on the market in 2003.