The Survival Response of Earthworm (Eisenia fetida L.) to Individual and Binary Mixtures of Herbicides
Research output: Contribution to journal › Journal article › Research › peer-review
Documents
- Fulltext
Final published version, 0.98 MB, PDF document
Frequent use of herbicides may impose a risk on non-target species. The objective was to test the combined toxic effect of binary herbicide mixtures-metribuzin:halosulfuron and metribuzin:flumioxazin-on non-target earthworms in two test systems: filter paper and a soil toxicity test system. The joint action experiments were independently run twice to substantiate the findings. The most potent individual herbicide was metribuzin, with a 50% lethal concentration (LC50) of 17.17 mu g ai. cm(-2) at 48 h in the filter paper test. The toxicity of the individual herbicides on the filter paper test was ranked as metribuzin>halosulfuron>flumioxazin. In the soil test, metribuzin and halosulfuron had high toxicity with an LC50 of 8.48 and 10.08 mg ai. kg(-1), respectively, on day 14. Thus, the individual herbicide ranking did not change between the filter paper and artificial soil tests. The herbicide's mixed effect in both test systems showed a consistent antagonistic effect relative to a Concentration Addition reference model. It indicates that the mixtures retracted the herbicide's action in the earthworms.
Original language | English |
---|---|
Article number | 320 |
Journal | Toxics |
Volume | 10 |
Issue number | 6 |
Number of pages | 13 |
DOIs | |
Publication status | Published - 2022 |
- ecotoxicology, isobole method, risk assessment, soil invertebrates, JOINT TOXICITY, PESTICIDES, CHLORPYRIFOS, INSECTICIDES, FLUMIOXAZIN, METRIBUZIN, EMERGENCE, ATRAZINE, METALS, METHYL
Research areas
ID: 312703152