[Objective]The paper was to guide scientific and rational use of emamectin benzoate in ginger.[Method]A field experiment was conducted to determine residue and degradation dynamics and final residue of emamectin benzo...[Objective]The paper was to guide scientific and rational use of emamectin benzoate in ginger.[Method]A field experiment was conducted to determine residue and degradation dynamics and final residue of emamectin benzoate in ginger.The residue of emamectin benzoate in ginger was determined by high performance liquid chromatography-mass spectrometry(HPLC-MS/MS).[Result]The half-life of emamectin benzoate in ginger was 2.2-3.4 d.As 5%emamectin benzoate WDG was sprayed on ginger at 7.5 and 11.25 g·a.i/hm^2 for consecutive 1-2 times,the residues of emamectin benzoate in ginger harvested at 7,14 and 21 d post spraying were lower than the quantitative limit of the method(0.01 mg/kg),and were lower than the stipulation in Japan as well(0.1 mg/kg).[Conclusion]It is safe to use emamectin benzoate in ginger with the harvest interval of 7 d according to the recommended dose.展开更多
[Objective] The paper was to explore the herbicidal activity of 41% flufenacet SC and its safety to soybean, wheat and maize. [Method]The herbicidal activity of 41% flufenacet SC on four species of weeds and its safet...[Objective] The paper was to explore the herbicidal activity of 41% flufenacet SC and its safety to soybean, wheat and maize. [Method]The herbicidal activity of 41% flufenacet SC on four species of weeds and its safety to three crops were determined by indoor bioactivity assay.[Result] 41% Flufenacet SC had good control effects against Amaranthus retroflexus, Descurainia Sophia, Bromus japonicus and Echinochloa crusgalli, with the ED90 of 154.1, 204.9, 273.1 and 140.9（a.i.） g/hm2, respectively. [Conclusion] The selectivity index of 41% flufenacet SC between the three crops tested and the two species of weeds was 6.63-9.24. The agent had good safety to soybean, wheat and maize.展开更多
[Objective]The paper was to develop a novel fungicide with high efficacy and low toxicity.[Method]Chlorothalonil was used as the parent structure,and its 4-position substituent was converted to amino group.Totally 12 ...[Objective]The paper was to develop a novel fungicide with high efficacy and low toxicity.[Method]Chlorothalonil was used as the parent structure,and its 4-position substituent was converted to amino group.Totally 12 amide compounds not reported in the literature were designed and synthesized.Their structures were conformed by 1H NMR.[Result]The preliminary bioassay test showed that compounds JTCN-01,JTCN-05 and JTCN-07 had good control effect on corn rust at the concentration of 200 mg/L,and the control effect of compound JTCN-05 reached 95%.[Conclusion]Some chlorothalonil derivatives had the potential for further development.展开更多
基金Supported by Agricultural Science and Technology Innovation Project of Shandong Academy of Agricultural Sciences(CXGC2018E19)
文摘[Objective]The paper was to guide scientific and rational use of emamectin benzoate in ginger.[Method]A field experiment was conducted to determine residue and degradation dynamics and final residue of emamectin benzoate in ginger.The residue of emamectin benzoate in ginger was determined by high performance liquid chromatography-mass spectrometry(HPLC-MS/MS).[Result]The half-life of emamectin benzoate in ginger was 2.2-3.4 d.As 5%emamectin benzoate WDG was sprayed on ginger at 7.5 and 11.25 g·a.i/hm^2 for consecutive 1-2 times,the residues of emamectin benzoate in ginger harvested at 7,14 and 21 d post spraying were lower than the quantitative limit of the method(0.01 mg/kg),and were lower than the stipulation in Japan as well(0.1 mg/kg).[Conclusion]It is safe to use emamectin benzoate in ginger with the harvest interval of 7 d according to the recommended dose.
基金Supported by Agricultural Science and Technology Innovation Project of Shandong Academy of Agricultural Sciences(CXGC2018E19)
文摘[Objective] The paper was to explore the herbicidal activity of 41% flufenacet SC and its safety to soybean, wheat and maize. [Method]The herbicidal activity of 41% flufenacet SC on four species of weeds and its safety to three crops were determined by indoor bioactivity assay.[Result] 41% Flufenacet SC had good control effects against Amaranthus retroflexus, Descurainia Sophia, Bromus japonicus and Echinochloa crusgalli, with the ED90 of 154.1, 204.9, 273.1 and 140.9（a.i.） g/hm2, respectively. [Conclusion] The selectivity index of 41% flufenacet SC between the three crops tested and the two species of weeds was 6.63-9.24. The agent had good safety to soybean, wheat and maize.
基金Supported by Agricultural Science and Technology Innovation Project of Shandong Academy of Agricultural Sciences(CXGC2018E19).
文摘[Objective]The paper was to develop a novel fungicide with high efficacy and low toxicity.[Method]Chlorothalonil was used as the parent structure,and its 4-position substituent was converted to amino group.Totally 12 amide compounds not reported in the literature were designed and synthesized.Their structures were conformed by 1H NMR.[Result]The preliminary bioassay test showed that compounds JTCN-01,JTCN-05 and JTCN-07 had good control effect on corn rust at the concentration of 200 mg/L,and the control effect of compound JTCN-05 reached 95%.[Conclusion]Some chlorothalonil derivatives had the potential for further development.
