Group B herbicide tolerance in lentil and faba bean on the Eyre Peninsula

2019

Research organisatons
Funding source

Trial details

Researcher(s) Dylan Bruce
Contact email Dlyan.bruce@sa.gov.au
Year(s) 2019
Contributor SARDI Minnipa Agricultural Centre
Trial location(s) Coulta, SA
South Australia, SA
Tooligie, SA
Group B herbicide tolerance in lentil and faba bean on the Eyre Peninsula locations
Aims

To make full use of in-crop rainfall, stored soil moisture and nutrients, and prevent weed seed contamination, the control of weeds in a pulse break crop phase is essential. Currently, herbicides are the primary method of weed control in broadacre cropping systems. However, there are limited options for broadleaf weed control in pulse crops, as there are few effective broadleaf post emergent herbicides available for use in faba bean and lentil. Along with limited control options, the presence of possible herbicide residues, such as sulfonylureas (SU), from previous crops are major deterrents for including pulses in a cropping rotation where there is an increased risk of herbicide damage. In recent years, Group B herbicide tolerant (HT) lentil and faba bean varieties have been released to Australian growers and have proven very popular for giving more flexible weed control options, particularly for late emerging broadleaf weeds. The Group B herbicide tolerance traits not only provide growers with in-crop options for broadleaf weed control, but also allow these pulse crops to be grown on Group B (including SU) herbicide residues, which can persist from previous crop applications for up to 24 months or longer, depending on rainfall (minimum of 700 mm) and soil pH (as per DuPont Glean® and Tackle® WG product labels).

 

The aim of these trials was to evaluate the levels of tolerance to simulated residues and post-emergent applications of Group B herbicides in lentil XT varieties, and a faba bean mutant derived line with Group B herbicide tolerance traits.

Key messages
  • High levels of crop safety were observed in imidazolinone tolerant lentil varieties, with no grain yield loss from any simulated residue treatments of sulfonylurea herbicides, or post-emergent applications of imidazolinone herbicides, at North Block in 2018, or Tooligie in 2019.
  • High levels of crop safety were observed in the imidazolinone tolerant faba bean variety, with no grain yield loss from any simulated residue treatments of sulfonylurea herbicides, or post-emergent applications of imidazolinone herbicides, at Yeelanna in 2019.
  • Access to herbicide tolerance traits will provide growers with an increased opportunity to diversify their cropping rotations and increase in-crop control options, specifically for broadleaf weed control in areas with high weed burdens.
Lead research organisation South Australian Research and Development Institute
Host research organisation South Australian Research and Development Institute
Trial funding source GRDC DAV00150
Related program N/A
Acknowledgments

Funding for this work was provided through GRDC project (DAV00150) and their continued support is gratefully acknowledged. The continued assistance from SARDI Agronomy groups at Clare, Minnipa and Port Lincoln is gratefully acknowledged and appreciated. We would also like to acknowledge support from property owners involved in this project.


Other trial partners SARDI Port Lincoln
Download the trial report to view additional trial information

Method

Crop types Grain Legume: Faba beans Grain Legume: Lentils
Treatment type(s)
  • Crop: Type
  • Herbicide: Type
Trial type
Trial design

Coulta 2019 Faba beans

Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified
Plot blocking Not specified
Plot randomisation Not specified
Herbicide Not specified

Coulta 2019 Lentils

Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified
Plot blocking Not specified
Plot randomisation Not specified
Herbicide Not specified

South Australia 2019 Faba beans

Sow date Unknown
Harvest date Unknown
Plot size 1.75m x 10m
Plot replication 3
Plot blocking Split
Plot randomisation Random
Herbicide

Metsulfuron-methyl 600 g/kg

Chlorsulfuron 750 g/kg

Triasulfuron 750 g/kg

Imazamox 33 g/L + Imazapyr 15 g/L

Imazethapyr 700 g/kg

South Australia 2019 Lentils

Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified
Plot blocking Not specified
Plot randomisation Not specified
Herbicide Not specified

Tooligie 2019 Faba beans

Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified
Plot blocking Not specified
Plot randomisation Not specified
Herbicide Not specified

Tooligie 2019 Lentils

Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified
Plot blocking Not specified
Plot randomisation Not specified
Herbicide Not specified
Download the trial report to view additional method/treatment information
Trial source data and summary not available
Check the trial report PDF for trial results.
Observed trial site soil information
Trial site soil testing
Site Depth Type pH EC P K N A OC CAT
South Australia, SA 10 - 30cm Clay Loam over red clay 7.80
Soil conditions
Trial site Soil texture
Coulta, SA Not specified
South Australia, SA Clay - Clay loam
Tooligie, SA Not specified
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Coulta, SA Sodosol
South Australia, SA Tenosol
Tooligie, SA Sodosol
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 Coulta SA South Australia SA Tooligie SA
2019 381.7mm551.3mm162.6mm
2018 415.4mm588.9mm192.7mm
2017 428.6mm595.0mm193.6mm
2016 443.5mm575.7mm203.4mm
2015 366.7mm530.1mm158.3mm
2014 450.7mm572.2mm220.1mm
2013 427.6mm566.1mm181.6mm
2012 445.1mm561.9mm176.1mm
2011 471.5mm588.1mm213.4mm
2010 471.6mm601.1mm208.0mm
2009 426.0mm565.0mm204.7mm
2008 371.7mm573.1mm166.0mm
2007 388.4mm567.4mm157.0mm
2006 451.7mm601.9mm190.8mm
2005 441.6mm590.0mm184.2mm
2004 431.5mm567.1mm181.3mm
2003 419.2mm585.1mm195.5mm
2002 367.3mm549.7mm158.3mm
2001 401.9mm558.5mm186.5mm
2000 409.9mm566.2mm207.4mm
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.

Coulta SA

South Australia SA

Tooligie SA

Coulta SA

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South Australia SA

NOTE: Exact trial site locality unknown - Climate data may not be accurate
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Tooligie 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: 19-05-2023 14:34pm AEST