Synergistic Effect on Lolium multiflorum Lamk.and Security to Wheat of Flufenacet and Pendimethalin
WU Renhai
SUN Huihui
SU Wangcang
XU Hongle
WANG Hengliang
LU Chuantao
WEI Hongmei
XUE Fei
Abstract：To explore the controlling measure of Lolium multiflorum Lamk.in wheat fields,the inhibitory activities of flufenacet and pendimethalin on wheat and Lolium multiflorum Lamk.were investigated indoor.Hydroponics results of Lolium multiflorum Lamk.showed that the median effective doses(ED50)of flufenacet,pendimethalin were 0.13 mg/L,0.16 mg/L,respectively.When flufenacet and pendimethalin were applied mixedly in the ratio of 1∶1,1∶2,2∶1,the ED50 values were 0.12 mg/L,0.04 mg/L,0.24 mg/L,respectively,and the co-toxicity coefficients (CTC) were 123.8,346.7,59.8,respectively,which showed that mixed use of flufenacet and pendimethalin in the ratio of 1∶1,1∶2 could enhance weed control effect,especially the later.Pot-experiment results showed that the selective coefficients between Lolium multiflorum Lamk.and wheat were 1.15,0.24,0.28,respectively,at 3 days after sowing(pre-emergence),5 days after germination and 15 days after germination when the two herbicides were mixedly applied in the ratio of 1∶2,revealing that the selective coefficient was the highest when the herbicides were sprayed after sowing and before emergence,which could control the occurrence and growth of Lolium multiflorum Lamk.to some extent,while the selectivity was relatively poor when the herbicides were sprayed post emergence.
Keywords：flufenacetpendimethalinwheatLolium multiflorum Lamk.synergistic effect
Publication Date：2017-06-02
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：4( 89-92 )