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<p>Before a pesticide can be used, its active substance must be approved and the pesticide
itself must be authorised. Decisions on approval and authorisation are based on an
assessment of the risks posed to people and to the environment. Such decisions are
devolved and so are taken by the relevant government or by the Health and Safety Executive
on its behalf.</p><p> </p><p>The active substance 1,4-dimethylnaphthalene (1,4-DMN)
is approved but at present there is no authorised product. The UK Government and the
Devolved Administrations have granted an emergency authorisation allowing the limited
and controlled use until 31 May 2021 of a 1,4-DMN product to prevent sprouting of
harvested potatoes. This emergency authorisation is granted in recognition of the
need for sprout suppression and the lack, in certain circumstances, of alternative
means of control.</p>
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