Acute Toxicity and Risk Assessment of Two Different Combination Agents of Haloxyfop-P-Methyl·Glufosinate-Ammonium·Fluoroglycofen-Ethyl to Environmental Non-Target Organisms
An experiment was set up to explore novel pesticide formulations and mitigate pesticide pollutants in environment.In this work,we screened five non-target organisms of Danio rerio,Daphnia magna,Pseudokirchneriella subcapitata,Apis mellifera and Bombyx mori and two combination agents of glufosinate-ammonium·haloxyfop-P-methyl·fluoroglycofen-ethyl 21％EW and glufosinate-ammonium·haloxyfop-P-methyl·fluoroglycofen-ethyl 23％ME,and then carried out acute toxicity determination using UPLC-MS/MS.The result showed that toxicity of the two combination agents to D.rerio was moderate,and to D.magna,A.mellifera and B.mori was low.Based on inhibitory rate of growth and biomass gain,toxicities of glufosinate-ammonium·haloxyfop-P-methyl·fluoroglycofen-ethyl 21％EW to P.subcapitata were moderate and high,and toxicities of glufosinate-ammonium·haloxyfop-P-methyl·fluoroglycofen-ethyl 23％ME were all high.Then through a step forward of risk assessment,these two combination agents were acceptable to A.mellifera,but unacceptable to B.mori.Therefore,these two combination agents were banned in the silkworm rearing room and the nearby of mulberry plantation,and tall trees as isolation belts were planted around the mulberry field to reduce the amount of drifting pesticides.
fluoroglycofen-ethylglufosinate-ammoniumhaloxyfop-P-methylcombination agentnon-target organism in environmentacute toxicityrisk assessment
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