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Web URL(s): | https://link.springer.com/article/10.1007/BF00205148 Last checked: 09/25/2017 Requires: PDF Reader Access conditions: Item is within a limited-access website |
Publication Type:
| Report |
Author(s): | Kirby, M. F.;
Sheahan, D. A. |
Author Affiliation: | Ministry of Agriculture, Fisheries and Food, Fisheries Laboratory, Remembrance Avenue, Burnham-on-Crouch, Essex, United Kingdom |
Title: | Effects of atrazine, isoproturon, and mecoprop on the macrophyte Lemna minor and the alga Scenedesmus subspicatus |
Source: | Bulletin of Environmental Contamination and Toxicology. Vol. 53, No. 1, July 1994, p. 120-126. |
Publishing Information: | New York: Springer-Verlag New York |
# of Pages: | 7 |
Keywords: | TIC Keywords: Atrazine; Non-target effects; Bioassay; Isoproturon; Mecoprop; Scenedesmus; Algae; Herbicides; Weed control; Toxicity
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Abstract/Contents: | "The use of herbicides is increasing world-wide as the need for selective weed control becomes more important. The UK Ministry of Agriculture, Fisheries and Food data base (D Thompson, pers. comm.) indicates that approximately 50% of approved biocides in the UK are herbicides. Fast, sensitive test procedures for assessing potential herbicidal impacts on non-target species within the freshwater environment are therefore essential. Algal toxicity tests have been used in the UK until now to assess phytotoxicity, and internationally approved standard methods are available (e.g. International Standards Organisation 1989). However, recent studies...have questioned the relevance of algal test data in assessing phytotoxic impacts on higher vascular plants and some studies...have indeed shown that EC₅₀ (growth) results gained with algae and higher plants can differ by as much as a factor of five hundred. For these reasons, the UK pesticide registration authority now also requires a Lemna macrophyte test to be conducted with herbicides, although a standardized guideline is not yet available. This study compared the toxicity of three herbicides, atrazine, isoproturon and mecoprop to a freshwater green flagellate alga, Scenedesmus subspicatus, and a macrophyte plant, the common duckweed Lemna minor. One objective of the work was to assist the development of a practical guideline for routine Lemmna tests. L. minor was chosen as the representative macrophyte because it is widespread in the UK, small, easy to handle and culture, and reproduces asexually at a fast rate. Three different end points were identified for the L. minor test and these were used to compare the sensitivity of the technique with that of the International Standards Organisation (ISO) algal bioassay." |
Language: | English |
References: | 15 |
Note: | Tables |
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete): Kirby, M. F., and D. A. Sheahan. 1994. Effects of atrazine, isoproturon, and mecoprop on the macrophyte Lemna minor and the alga Scenedesmus subspicatus. Bull. Environ. Contam. Toxicol. 53(1):p. 120-126. |
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| Web URL(s): https://link.springer.com/article/10.1007/BF00205148 Last checked: 09/25/2017 Requires: PDF Reader Access conditions: Item is within a limited-access website |
| MSU catalog number: RA 565 .A1 B8 |
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