RT Journal Article T1 Detection of Phytotoxic Soil Residues of Hexazinone and Simazine by a Biological Test Using Lepidium sativum L. var. Cresson A1 Ortega Quero, Marta A1 Alonso-Prados, José Luis A1 Villarroya, Mercedes A1 García-Baudín, José AB 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. PB Cambridge University Press SN 0890-037X YR 2004 FD 2004 LK https://hdl.handle.net/20.500.14352/97928 UL https://hdl.handle.net/20.500.14352/97928 LA eng NO Ortega, Marta, et al. «Detection of Phytotoxic Soil Residues of Hexazinone and Simazine by a Biological Test Using Lepidium Sativum L. Var. Cresson». Weed Technology, vol. 18, n.o 3, septiembre de 2004, pp. 505-08. https://doi.org/10.1614/WT-03-055. DS Docta Complutense RD 18 abr 2025