The Survival Response of Earthworm (Eisenia fetida L.) to Individual and Binary Mixtures of Herbicides
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The Survival Response of Earthworm (Eisenia fetida L.) to Individual and Binary Mixtures of Herbicides. / Samadi Kalkhoran, Elham; Alebrahim, Mohammad Taghi; Mohammaddoust Chamn Abad, Hamid Reza; Streibig, Jens Carl; Ghavidel, Akbar; Tseng, Te-Ming Paul.
In: Toxics, Vol. 10, No. 6, 320, 2022.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - The Survival Response of Earthworm (Eisenia fetida L.) to Individual and Binary Mixtures of Herbicides
AU - Samadi Kalkhoran, Elham
AU - Alebrahim, Mohammad Taghi
AU - Mohammaddoust Chamn Abad, Hamid Reza
AU - Streibig, Jens Carl
AU - Ghavidel, Akbar
AU - Tseng, Te-Ming Paul
PY - 2022
Y1 - 2022
N2 - 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.
AB - 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.
KW - ecotoxicology
KW - isobole method
KW - risk assessment
KW - soil invertebrates
KW - JOINT TOXICITY
KW - PESTICIDES
KW - CHLORPYRIFOS
KW - INSECTICIDES
KW - FLUMIOXAZIN
KW - METRIBUZIN
KW - EMERGENCE
KW - ATRAZINE
KW - METALS
KW - METHYL
U2 - 10.3390/toxics10060320
DO - 10.3390/toxics10060320
M3 - Journal article
C2 - 35736928
VL - 10
JO - Toxics
JF - Toxics
SN - 2305-6304
IS - 6
M1 - 320
ER -
ID: 312703152