A field study with wheat crop was undertaken to examine the efficacy of two soil amendments,cereal straw and fresh cow dung slurry,in reducing leaching of sulfosulfuron to groundwater and its residue load in soil.The ...A field study with wheat crop was undertaken to examine the efficacy of two soil amendments,cereal straw and fresh cow dung slurry,in reducing leaching of sulfosulfuron to groundwater and its residue load in soil.The herbicide was extracted by the QuEChER’S method and quantified through high performance liquid chromatography.The amendments had no effect on the general properties of groundwater.Both cereal straw and fresh cow dung reduced leaching of sulfosulfuron into groundwater but cereal straw was more effective,probably because its addition decreases soil pH,thereby causing faster hydrolysis of the herbicide.At harvest time,residues of the herbicide in grains,straw and soil were below recommended maximum residue limits(0.1mg kg-1)with both amendments.Thus,both the amendments can be recommended for wheat cropping systems to control sulfosulfuron leaching to groundwater.展开更多
[目的]探讨磺酰磺隆对小麦田杂草的除草活性。[方法]采用室内生物测定方法测定了磺酰磺隆对11种麦田杂草的除草活性,并在小麦田进行了田间试验。[结果]温室试验表明:磺酰磺隆对荠菜、菵草和硬草有很好的防除效果,ED50值分别为1.49、0.98...[目的]探讨磺酰磺隆对小麦田杂草的除草活性。[方法]采用室内生物测定方法测定了磺酰磺隆对11种麦田杂草的除草活性,并在小麦田进行了田间试验。[结果]温室试验表明:磺酰磺隆对荠菜、菵草和硬草有很好的防除效果,ED50值分别为1.49、0.98、5.33 g a.i./hm2;对猪殃殃、麦家公、麦瓶草也有较好的效果;对野燕麦等有较好的抑制生长作用,但对播娘蒿、节节麦效果较差。田间试验表明:磺酰磺隆对猪殃殃杂草等均有较好的防效且对小麦安全。[结论]磺酰磺隆可以应用于小麦田防除多种杂草。展开更多
基金The financial assistance provided by Ministry of Environment&Forests,NewDelhi(19/22/2011-RE,dated-27/03/2012)the DST Inspire fellowship(No.DST/INSPIRE Fellowship/2013/176)to one of the students during the research work is duly acknowledged.
文摘A field study with wheat crop was undertaken to examine the efficacy of two soil amendments,cereal straw and fresh cow dung slurry,in reducing leaching of sulfosulfuron to groundwater and its residue load in soil.The herbicide was extracted by the QuEChER’S method and quantified through high performance liquid chromatography.The amendments had no effect on the general properties of groundwater.Both cereal straw and fresh cow dung reduced leaching of sulfosulfuron into groundwater but cereal straw was more effective,probably because its addition decreases soil pH,thereby causing faster hydrolysis of the herbicide.At harvest time,residues of the herbicide in grains,straw and soil were below recommended maximum residue limits(0.1mg kg-1)with both amendments.Thus,both the amendments can be recommended for wheat cropping systems to control sulfosulfuron leaching to groundwater.
文摘[目的]探讨磺酰磺隆对小麦田杂草的除草活性。[方法]采用室内生物测定方法测定了磺酰磺隆对11种麦田杂草的除草活性,并在小麦田进行了田间试验。[结果]温室试验表明:磺酰磺隆对荠菜、菵草和硬草有很好的防除效果,ED50值分别为1.49、0.98、5.33 g a.i./hm2;对猪殃殃、麦家公、麦瓶草也有较好的效果;对野燕麦等有较好的抑制生长作用,但对播娘蒿、节节麦效果较差。田间试验表明:磺酰磺隆对猪殃殃杂草等均有较好的防效且对小麦安全。[结论]磺酰磺隆可以应用于小麦田防除多种杂草。
