The phytostimulation is a phytoremediation technique that can be used to remediate area contaminated with herbicides. It is necessary to select plants with high capacity to stimulate soil microbial activity. The present work aimed at evaluating seven plant species regarding their ability to phytostimulate soil and enhance the degradation of the herbicides imazethapyr, imazapic and imazapyr in a lowland soil. An Alfisol Albaqualf was cultivated with the following species, Canavalia ensiformis, Glycine max, Oryza sativa cultivar PUITÁ INTA CL, Lolium multiflorum, Vicia sativa and consortium Lotus corniculatus + Trifolium repens. The rhizosphere of these plants and non-rhizospheric (uncultivated soil) as a control were contaminated in laboratory with analytical standart of the three herbicides, at rates of 0, 150, 300 and 750 g a.i. ha-1, in separate assays. Biodegradation was estimated by quantifying C-CO2 production and through analysis of herbicides residues in soil using liquid chromatography. Results show that biodegradation of herbicides imazethapyr, imazapic and imazapyr was higher in vegetated soil than in unvegetated soil. The leguminous species Canavalia ensiformis, Glycine max, Vicia sativa and consortium of Lotus corniculatus + Trifolium repens showed a great capacity to promote soil microbial, resulting in average biodegradation rates of 91, 92 and 93% for herbicides imazethapyr, imazapic and imazapyr in soil, respectively.

中文翻译：

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对被咪唑啉酮除草剂污染的低地土壤进行植物刺激。

植物刺激是一种植物修复技术，可用于修复被除草剂污染的区域。有必要选择具有高刺激土壤微生物活性能力的植物。目前的工作旨在评估七个植物物种在低地土壤中植物对土壤的光刺激能力和增强除草剂咪草乙烟，依马西吡和依马比吡的降解的能力。种植了Alfisol Albaqualf，其具有以下物种：Canavalia ensiformis，Glycine max，Oryza sativa品种PUITÁINTA CL，何首乌（Lolium multiflorum），豌豆（Vicia sativa）和财团Lotus corniculatus + Trifolium repens。这些植物的根际和非根际（未耕作的土壤）在实验室中被三种除草剂的分析标准品分别以0、150、300和750 g ai ha-1的浓度污染，在单独的测定中。通过量化C-CO2的产生和使用液相色谱法分析土壤中除草剂残留物来估算生物降解程度。结果表明，在无土的土壤中，除草剂咪唑乙烟，吡虫啉和吡虫啉的生物降解率高于无土的土壤。豆科植物Canavalia ensiformis，Glycine max，Vicia sativa和Lotus corniculatus + Trifolium repens的组合显示出促进土壤微生物的强大能力，导致土壤中除草剂咪草乙烟，伊马替比和伊马替比的平均生物降解率分别为91％，92％和93％，分别。植被土壤中的伊马替比和依马平比高于非植被土壤。豆科植物Canavalia ensiformis，Glycine max，Vicia sativa和Lotus corniculatus + Trifolium repens的组合显示出促进土壤微生物的强大能力，导致土壤中除草剂咪草乙烟，伊马替比和伊马替比的平均生物降解率分别为91％，92％和93％，分别。植被土壤中的伊马替比和依马平比高于非植被土壤。豆科植物Canavalia ensiformis，Glycine max，Vicia sativa和Lotus corniculatus + Trifolium repens的组合显示出促进土壤微生物的强大能力，导致土壤中除草剂咪草乙烟，伊马替比和伊马替比的平均生物降解率分别为91％，92％和93％，分别。