Herbicides

Herbicides are chemicals that destroy or inhibit the growth of plants.  They play a vital role in an Integrated Pest Management plan. Numerous herbicides are registered with the Australian Pesticides and Veterinary Medicines Authority for use in Western Australia (WA).

In 2006–07, 91.4% of Western Australian agricultural businesses used herbicides to control weeds. Total expenditure for all types of weed control was $341 million (Australian Bureau of Statistics).

Weed control is a shared responsibility between landholders, grower groups, biosecurity groups and the Department of Agriculture and Food, Western Australia (DAFWA). To protect WA’s agriculture, DAFWA:

  • works with landholders, grower groups, community groups and biosecurity groups
  • provides information on using herbicides, herbicide resistance and herbicides that can be used on declared plants in WA.

If you need advice on herbicides please search our website or the Australian Pesticides and Veterinary Medicines Authority website. Our Pest and Disease Information Service (PaDIS) can also put you in contact with a herbicide expert.

See Also

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Articles

  • Leaf symptoms occur when the seedling emerges but roots remain normal

    Diagnosing group C herbicide damage in cereals

    28 November 2013

    This category contains root pre-emergent Group C herbicides.  Post-emergent use in cereals are simazine (silver grass control), and diuron+MCPA (broadleaf weed control).

  • Normally plants wilt, twist, become discoloured and then die

    Diagnosing glyphosate damage in cereals

    28 November 2013

    Glyphosate is a systemic knockdown herbicide that is used for brown fallow, summer weed or pre-seeding weed control, or selective weed control in glyphosate-resistant crops.

  • Burst coleoptile in metalochlor damaged wheat

    Diagnosing group K herbicide damage in cereals

    28 November 2013

    This pre-emergent herbicide group is used to control annual grasses and broadleaf weeds. It is applied to the soil either before or directly after sowing and prior to weed emergence.

  • Leaf necrosis moves from leaf edges to veins

    Diagnosing group C herbicide damage in canola

    7 May 2014

    A range of group C herbicides are registered for use in triazine tolerant (TT) varieties, but other varieties are susceptible to both pre and post emergent applications.

     

  • Close up of bindii weed showing the prickly seed.

    Bindii control

    3 February 2014

    Bindii weed, onehunga (pronounced oh-nee-hunga after a New Zealand Maori place name) and jo-jo are alternative names for a troublesome lawn weed (Soliva pterosperma) which is now widesprea

  • Chemical control of declared plants

    5 November 2013

    Herbicides are extensively used to control declared plants.

  • Boom sprayers are pulled by a tractor to spray large areas of land

    Changes to 2,4-D High Volatile Ester (HVE) herbicide registration

    2 October 2013

    The Australian Pesticides and Veterinary Medicines Authority (APVMA) has amended the registration of 2,4-D High Volatile Ester (HVE) herbicides.

  • Emerging leaves are distorted and discoloured; leaf blades become cupped and crinkly

    Diagnosing glyphosate damage in canola

    7 May 2014

    Glyphosate is a systemic knockdown herbicide that is used extensively for brown fallow, summer weed or pre-seeding weed control, or selective weed control in glyphosate resistant crops.

  • Uniformly affected plants with pale leaf blotches

    Diagnosing group F herbicide damage in canola

    7 May 2014

    Group F herbicides are registered for selective control of wild radish, wild mustard and wild turnip in cereals, legume crops and legume pastures. Canola is less affected than brassica weeds

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