The study focused on two grass species Holcus lanatus and Agrostis capillaris abundant in the sites of former As mining and processing in the Sudetes. Arsenic uptake from soils was examined to assess a risk associated with its accumulation in grass shoots and to check its dependence on soil fertilization. The research involved a field study and greenhouse experiment. In the field study, soil and plant samples were collected from 33 sites with 72–98,400 mg/kg total soil As. Arsenic uptake by grasses differed widely. Both species indicated a strategy typical for eliminators, although As concentrations in more than 50% of the shoot samples exceeded 4 mg/kg, a maximum permissible value for fodder. In the greenhouse experiment, commercial cultivars of both species were grown in five soils containing 394–19,600 mg/kg, untreated and fertilized. All seedlings died in the soil with highest total As, and considerable phytotoxicity was observed in other soils, particularly in nonfertilized ones. Fertilization resulted in the improvement of plant growth and reduction of As uptake except for Agrostis capillaris fertilized with manure. Further research should focus on identifying tolerant genotypes growing in extremely enriched sites and analysis of factors that will efficiently reduce As phytoaccumulation.

中文翻译：

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两种耐受草种的砷吸收：在历史采矿污染的土壤中生长的长毛草和剪草。


该研究的重点是苏台德地区前砷开采和加工地点丰富的两种草类：Holcus lanatus和Agrostis capillaris 。检查土壤中砷的吸收，以评估与其在草芽中积累相关的风险，并检查其对土壤施肥的依赖性。该研究涉及实地研究和温室实验。在实地研究中，从 33 个地点采集了土壤和植物样品，土壤总砷含量为 72–98,400 毫克/千克。草对砷的吸收差异很大。尽管超过 50% 的芽样本中的砷浓度超过了 4 毫克/千克（饲料的最大允许值），但这两个物种都表现出典型的消除策略。在温室实验中，这两个物种的商业品种均在五种土壤中种植，土壤中的氮含量为 394-19,600 毫克/千克，未经处理且施肥。在总砷含量最高的土壤中，所有幼苗都会死亡，并且在其他土壤中观察到相当大的植物毒性，特别是在未施肥的土壤中。除用粪肥施肥的毛细草外，施肥导致植物生长改善并减少砷吸收。进一步的研究应侧重于识别在极其丰富的地点生长的耐受基因型，并分析将有效减少砷植物积累的因素。