[Objectives]This study was conducted to investigate the compounding of three herbicides:clopyralid,picloram and benazolin,so as to improve the effectiveness of herbicides.[Methods]With Lapsana apogonoides Maxim.as the...[Objectives]This study was conducted to investigate the compounding of three herbicides:clopyralid,picloram and benazolin,so as to improve the effectiveness of herbicides.[Methods]With Lapsana apogonoides Maxim.as the target and clopyralid,picloram and benazolin as the test agents,seven gradient concentrations were set up to determine the joint toxicity of the three agents.[Results]When the compounding ratio of picloram,clopyralid and benazolin was 2∶1∶6,the maximum co-toxicity coefficient was 290.0.[Conclusions]The compounding of picloram,clopyralid and benazolin has a significant synergistic effect on L.apogonoides,which reduces production costs and environmental pressure,providing technical support for the effective control of broad-leaved weeds such as L.apogonoides.展开更多
采用整体化色谱柱,对复配制剂14.5%胺苯·草除·精氟吡甲可湿性粉剂中的三种有效成分胺苯磺隆、草除灵乙酯、精氟吡甲禾灵进行了分离测定。在整体化色谱柱Chromolith O R Performance RP-18e上以乙腈-水溶液为流动相作梯度洗脱...采用整体化色谱柱,对复配制剂14.5%胺苯·草除·精氟吡甲可湿性粉剂中的三种有效成分胺苯磺隆、草除灵乙酯、精氟吡甲禾灵进行了分离测定。在整体化色谱柱Chromolith O R Performance RP-18e上以乙腈-水溶液为流动相作梯度洗脱,检测波长为254nm的条件下,在15min内可达到基线分离。在0.02mg/mL~0.4mg/mL时三种有效成分的浓度与峰面积呈良好的线性关系,加标回收率在98.6%~100.8%,相对标准偏差(RSD)(n=6)在0.35%~0.66%,应用该方法可在一次进样中同时完成三种有效成分的定量分析,操作简便,快速准确。展开更多
基金Double First-class Applied Characteristic Disciplines in Hunan Province(Plant protection)Excellent Agriculture and Forestry Talent Cultivation Project of Hunan Institute of Humanities,Science and TechnologyNew Agricultural Science Research and Reform Practice Project in Hunan Province(XJT[2020]94).
文摘[Objectives]This study was conducted to investigate the compounding of three herbicides:clopyralid,picloram and benazolin,so as to improve the effectiveness of herbicides.[Methods]With Lapsana apogonoides Maxim.as the target and clopyralid,picloram and benazolin as the test agents,seven gradient concentrations were set up to determine the joint toxicity of the three agents.[Results]When the compounding ratio of picloram,clopyralid and benazolin was 2∶1∶6,the maximum co-toxicity coefficient was 290.0.[Conclusions]The compounding of picloram,clopyralid and benazolin has a significant synergistic effect on L.apogonoides,which reduces production costs and environmental pressure,providing technical support for the effective control of broad-leaved weeds such as L.apogonoides.
文摘采用整体化色谱柱,对复配制剂14.5%胺苯·草除·精氟吡甲可湿性粉剂中的三种有效成分胺苯磺隆、草除灵乙酯、精氟吡甲禾灵进行了分离测定。在整体化色谱柱Chromolith O R Performance RP-18e上以乙腈-水溶液为流动相作梯度洗脱,检测波长为254nm的条件下,在15min内可达到基线分离。在0.02mg/mL~0.4mg/mL时三种有效成分的浓度与峰面积呈良好的线性关系,加标回收率在98.6%~100.8%,相对标准偏差(RSD)(n=6)在0.35%~0.66%,应用该方法可在一次进样中同时完成三种有效成分的定量分析,操作简便,快速准确。