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Detection of Phytotoxic Soil Residues of Hexazinone and Simazine by a Biological Test Using Lepidium sativum L. var. Cresson

Published online by Cambridge University Press:  20 January 2017

Marta Ortega
Affiliation:
Departamento de Selvicultura, CIFOR-INIA, Carretera de la Coruña km. 7.5, 28040 Madrid, Spain
José L. Alonso-Prados
Affiliation:
Department, Departamento de Protección Vegetal, INIA, Carretera de la Coruña km. 7.5, 28040 Madrid, Spain
Mercedes Villarroya
Affiliation:
Department, Departamento de Protección Vegetal, INIA, Carretera de la Coruña km. 7.5, 28040 Madrid, Spain
José M. García-Baudín*
Affiliation:
Department, Departamento de Protección Vegetal, INIA, Carretera de la Coruña km. 7.5, 28040 Madrid, Spain
*
Corresponding author's E-mail: baudin@inia.es

Abstract

Current plant bioassays included in the guidelines for testing pesticides do not include the measurement of reproduction endpoints. A bioassay, based on reduction of flowering of cress was developed to detect soil residues of hexazinone and simazine at levels of 0.02 and 0.10 ppm, respectively. The endpoint used in the described bioassay is the percentage of plant viability that implies that the tested plants have reached the flowering stage. It was found that sensitivity of cress is lower in soils containing higher organic matter.

Type
Research
Copyright
Copyright © Weed Science Society of America 

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