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More US registration reviews opened
Jul. 10, 2008
The US EPA has issued preliminary work plans for a further ten pesticides entering the registration review programme. The Agency has opened public dockets for the organophosphate herbicide, bensulide, and the organophosphate insecticides, coumaphos, diazinon, dicrotophos, oxydemeton-methyl, profenofos, propetamphos, temephos, terbufos and tetrachlorvinphos. The reviews are due to be completed in 5-8 years. Most of the active ingredients were included in the EPA’s cumulative risk assessment of organophosphates, which was completed in 2006.
The EPA has closed the planned registration review for the organophosphate insecticide, phosalone. It was scheduled for inclusion in the review programme in 2006, but the Agency has since determined that there are no current registrations for the ai.
Bensulide is a pre-emergence herbicide that is usually applied to bare ground before crops are planted. It is used on agricultural crops, turf and rights-of-way. The EPA plans to conduct a comprehensive ecological risk assessment for the non-selective herbicide use and an endangered species assessment for all uses. Updated dietary, residential, occupational and aggregate risk assessments may also be required. The review is due for completion in 2016.
There are no agricultural or residential uses for coumaphos. It is registered for use on animals and in bee hives. The EPA will conduct an ecological risk assessment, including an endangered species assessment, for all uses. No further human health risk assessments or data should be needed. The review should be completed in 2014.
Diazinon is a restricted-use pesticide for use on fruit, vegetables, nuts, ornamentals and cattle ear tags. Residential uses ended in 2004 under a cancellation agreement with the registrants. The EPA plans to conduct comprehensive human health and ecological risk assessments for all uses of diazinon and its metabolites of concern. The review should end in 2014.
Dicrotophos is a restricted-use pesticide primarily for use on cotton, with a minor use on ornamental trees. An ecological risk assessment will be conducted for all uses, including an endangered species determination. Dietary and drinking water assessments are deemed adequate and will not be reassessed. However, occupational risks will be examined during the review. It is due for completion in 2014.
Oxydemeton-methyl is a restricted use insecticide/acaricide for use on a range of food crops and ornamentals. There are no residential uses. The Agency intends to conduct dietary, occupational and ecological risk assessments for all uses of the ai. The review is due for completion in 2014.
The only registered profenofos-based product is Syngenta’s Curacron, which is used on cotton. The EPA completed an interim re-registration eligibility decision (IRED) in 2000 and conducted a limited ecological risk assessment to support an emergency exemption for rice in 2007. The Agency plans to revise the ecological risk assessment to ensure that it reflects current use patterns and it will also revise the human health risk assessment. A new aggregate risk assessment may also be needed. The review is due to close in 2013.
Propetamphos is a non-residential indoor crack and crevice treatment to control pests such as ants and cockroaches. An ecological risk assessment was conducted in 1997 as part of the 2000 IRED. The EPA does not expect to require any more data or conduct a new assessment. However, it may revise its dietary risk assessment pending the receipt of newly required toxicology studies. The review should be completed in 2013.
Temephos is used to control aquatic larvae of mosquitoes and other pests. It is registered for use by public health officials and certain other operatives. The Agency plans to conduct a comprehensive ecological risk assessment, including an endangered species determination. No dietary risk assessment is required and the EPA does not expect to conduct a new occupational risk assessment. The review should close in 2014.
American Vanguard’s insecticide/nematicide, Counter (terbufos), is registered for use on maize, sugar beet and sorghum. Amvac acquired the product from BASF in 2006. The EPA will conduct a comprehensive ecological risk assessment, including an examination of endangered species. It aims to re-examine the human health risk assessment in light of toxicity data submitted after the 2001 terbufos IRED. The review is due to be completed in 2014.
Tetrachlorvinphos is used to control nuisance and public health pests. The EPA expects to conduct comprehensive human health and ecological risk assessments for all uses. The review is due for completion in 2014.
Source: U.S. EPA
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