| | 1 | Author
| Carl Fedtke, RobertH. Strang, Bayer Ag, Geschäftsbereich Pflanzenschutz, Biologische Anwendungstechnik, Forschung | Requires cookie* | | | Title
| Synergistic Activity of the Herbicide Safener Dichlormid with Herbicides Affecting Photosynthesis  | | | | Abstract
| Dichlormid, a safener for thiolcarbamate herbicides, was tank-mixed with several herbicidal inhibitors of photosystem II, or with the herbicide acifluorfen, and applied postemergence to Ipomoea hederacea plants. Dichlormid had no visible effects on the plants when applied alone, but interacted synergistically with the herbicides in the combination treatments. Dichlormid strongly decreased the ascorbic acid levels in the Ipom oea hederacea cotyledons. Ascorbate is known to protect plant tissue from photooxidative damage. The herbicides which interacted synergistically with dichlormid are believed to generate their phytotoxic action via the produc tion of excess singlet oxygen. It is suggested that the decreased ascorbate levels in the Ipomoea hederacea cotyledons after dichlormid treatment result in an impaired singlet oxygen scaveng ing system and consequently lead to increased plant damage in the presence of singlet oxygen generating herbicides. | | | |
Reference
| Z. Naturforsch. 45c, 565—567 (1990); received October 13 1989 | | | |
Published
| 1990 | | | |
Keywords
| Herbicide, Synergism, Safener, Oxygen Toxicity, Ascorbic Acid | | | |
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| default:Reihe_C/45/ZNC-1990-45c-0565.pdf | | | | Identifier
| ZNC-1990-45c-0565 | | | | Volume
| 45 | |
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