Dissipation Time 50% (Dt50) : The time required for one half of the initial quantity or concentration of a pesticide to dissipate from a particular environment. See also: Half-life
Health and Safety Executive (HSE), Pesticides Glossary, Merseyside, England, UK 2014. www.pesticides.gov.uk/guidance/industries/...group s/.../pesticides-glossary, (Hlth and Sfty - Brit) {720}