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A comparative study on pesticide formulations for application in running waters.

Abstract：

:Release rates into water of monolinuron, desmetryne, and carbofuran from three different types of formulations have been studied to control aquatic weeds in running waters. The migration of active ingredients (AI) from conventional wettable powder formulations was complete within 1 day, while the migration from ethylene-vinyl acetate copolymeric matrix (EVA) lasted significantly longer due to low diffusion coefficients of monomeric pesticides in polymeric matrices Do = 10(-8)-10(-12) (cm2 X sec-1). The herbicidal action could be extrapolated up to several years. Release duration of AI from calcium alginate beads lasted 2 weeks. Herbicidal effectiveness of terbutryne-EVA formulation has been investigated in a laboratory-scale simulated flow system device with duckweed plants (Lemna minor) as test organism. Growth inhibition of duckweed could be achieved at approx 20 ppb terbutryne in steady state.

journal_name

Ecotoxicol Environ Saf

journal_title

Ecotoxicology and environmental safety

authors

Bahadir M,Pfister G

doi

10.1016/0147-6513(85)90066-1

subject

Has Abstract

pub_date

1985-10-01 00:00:00

pages

197-201

issue

2

eissn

0147-6513

issn

1090-2414

pii

0147-6513(85)90066-1

journal_volume

10

pub_type

杂志文章

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