Propargite

Chemical class Organosulfur miticide
Chemical Structure Chemical structure of Propargite
CAS Number 2312-35-8
Mode of action 12C – Inhibitors of mitochondrial ATP synthase
Target pests Various mite species
Hosts Cotton, a variety of fruit, vegetable and ornamental crops
Formulations Wettable powder, emulsifiable concentrate, emulsion, oil in water and water-dispersible granules
Home garden use No
No of Australian Approvals and Registrations 7 active constituents, 10 products
Poison schedule Schedule 6
Australian Health-based guidance values

ADI – 0.002 mg/kg bw per day (1999)

No Australian ARfD established

Key issues

  • Dietary exposure estimates conducted by FSANZ indicate an exceedance of the ADI – unable to consider an additional commodities at this stage.
  • Review of the Australian ADI may be warranted
  • Highly toxic to aquatic life.
  • Concerns about risks from spray drift.
  • No label warnings to address spray drift risks.
  • Concerns about trade risk because it is not approved in the EU.  Concerns about dietary risk as residue intake is close to, or exceeds ADI.

Stakeholder perspective

  • One of the few good options for effective control of mites in horticulture crops. In IPM programs, propargite is used when a build-up of mites occurs.
  • Although alternative chemicals are available, propargite is considered a highly important chemical for several horticulture crops.
  • In cotton, propargite has limited yet opportunistic use for late season mite control. Use is limited to late season application as it is detrimental to beneficial insect species. Although the chemical has low insect resistance profile, efficacy is subject to environmental factors. Use of propargite has decreased since the introduction of abamectin and emamectin.
  • In turf, propargite is an important control chemical, especially when used in conjunction with Clofentezine.

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