Advisory Committee on Pesticides Annual Report 2001

<strong>Advisory</strong> <strong>Committee</strong> on Pesticides Annual Report 2001
The ACP agreed that the estimated exposures of operators, bystanders,
workers and consumers were acceptable. Two minor metabolites present
in wheat but not found in the rat were considered by the <strong>Committee</strong> not
to be a cause for concern.
It was agreed that the potential for soil accumulation was slight and the
ACP concluded that the weight of evidence indicated an acceptable risk
to non-target organisms without the need for further data.
The ACP also considered potential groundwater contamination and the
likelihood of exceedance of the EU drinking water limit. It was noted that
interpretation of probabilistic modelling data, particularly involving preferential
flow, was difficult and needed further elucidation. However, the compound
was applied at low rates and its sorption and persistence properties were not
consistent with significant leaching. Overall the ACP agreed that the potential
for contamination of groundwater was likely to be low and was acceptable
for approval.
24
The ACP initially required further assessment of the potential of silthiofam
to accumulate in sediment and of the chronic risk presented to sedimentdwelling
organisms. The <strong>Committee</strong> subsequently considered a revised risk
assessment based on potential cumulative deposition scenarios in sediment
and data from a chronic Daphnia study. It was concluded that the risk was
acceptable for approval of silthiofam but that generic issues pertaining to
exposure of sediment-dwelling organisms should be addressed.
The <strong>Committee</strong> recommended provisional approval for ‘Latitude’ for use
as a cereal seed treatment pending the Commission decision on inclusion
of silthiofam in Annex 1 of Council Directive 91/414/EEC.
Spinosad
Spinosad is new macrolide insecticide with a novel mode of action on the
insect nervous system. The active substance was also being considered for
inclusion in Annex I of Directive 91/414/EEC with Netherlands acting as
Rapporteur Member State.
The ACP considered authorisation of ‘Conserve’ (formerly ‘NAF-313’), a
suspension concentrate formulation containing 120 g/l of the active substance
spinosad. The proposed use of the product was for the control of western
flower thrips (Frankliniella occidentalis) in protected ornamental plant
production.