Title: Land use practices and pathways of pesticide residues in the Mount's Bay catchment, Cornwall
Author: J. Proctor
Document Type: Monograph
Annotation: EA additional title info: environmental protection report
Abstract:
Investigations in the Newlyn Catchment in Cornwall have demonstrated that runoff from aldrin-treated bulb fields lead to pesticide contamination of river water, sediments and fish. Following this, work has been commissioned to document the historic use of aldrin in other catchments renowned for bulb growing and to examine pesticide pathways to watercourses. A study was commissioned by NRA South West to investigate pesticide usage in the Mount's Bay Catchment with particular attention being paid to the historic use of aldrin and was awarded to Soil Survey and Land Research Centre, Starcross, Exeter. Simazine and carbendazim were also identified as other likely pesticide contaminants in common use in the Mount's Bay Catchment. The use and pathways of these pesticides were also examined to indicate the wider movement of pesticides in catchments. Over 180 fields were found to have been treated with aldrin in the Mount's Bay area. Increases of aldrin and dieldrin concentrations were demonstrated both in colluvium and turbid runoff. Pesticide residues were shown to access the watercourse via turbid runoff even during low intensity rainfall with an estimated return period of 2 weeks.
Publisher: National Rivers Authority
Publication Date: 1992
Publication Place: Exeter
Subject Keywords: Land use; Pesticide residues; Rivers; Water pollution; Fields; Runoff; Pesticides; Soil pollution
Geographic Keywords: Mounts Bay (Cornwall); Cornwall; West Cornwall and the Fal catchment; Hayle (Cornwall)
Extent: n.p. [53]
Permalink: http://www.environmentdata.org/archive/ealit:2730
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