The APVMA’s proposed regulatory decision on paraquat is open for public consultation until 29 October 2024, we invite submissions of additional data to help inform our final decision.
Overview
Paraquat is a non-selective herbicide, this means it works on any plant it comes into contact with, rather than just affecting a single target species. Paraquat is registered for use in a range of agricultural and horticultural situations and for weed control in other situations like roadsides and firebreaks. Paraquat is very restricted and only available for use by trained operators, and it must be kept locked up. Some products with a low concentration of diquat are less restricted, but products with higher concentrations are also very restricted.
Paraquat and diquat were nominated for reconsideration due to concerns relating to the safety of people, including users of the chemicals and the public, safety to the environment, and impact on trade.
Based on the weight of evidence, the APVMA proposes removing a number of current uses at high rates of application that pose an unacceptable risk to the environment. The APVMA also proposes removing the use of paraquat at higher rates where the short-term risk for poisoning can’t be adequately mitigated. There is no imminent risk to human health or the safety of food. The APVMA will take immediate action if there is an imminent risk.
The APVMA reviewed a range of epidemiological studies and other research before reaching this decision. The APVMA’s review was summarised briefly in the Review Technical Report.
Human health
Paraquat products have been used for many years in Australia. All chemicals must be used in accordance with label instructions to ensure human safety, and safety of the environment.
If the APVMA becomes aware of human health risks associated with the use of agvet chemicals in accordance with the label, we have the power to take action quickly to protect human health.
The APVMA uses internationally recognised models to determine what dosage users are exposed to when preparing and using agvet chemical products. These models assume that products are used in line with label instructions, including requirements for Personal Protective Equipment.
The APVMA maintains an adverse experience reporting program. We encourage you to submit a report if you think you may have been exposed to an agvet chemical or experienced negative health effects associated with using a chemical. We also cooperate with Poisons Information Centres to ensure we are aware of health issues which may be associated with the use of agvet chemicals.
The environment
Based on the weight of evidence, the APVMA is proposing removing a number of current uses at high rates that pose an unacceptable risk to the environment. The main risk identified was acute (or short-term) risk to native mammals and birds. The proposed draft labels set out uses which remain acceptable, particularly uses at lower rates and early in the season.