The influence of landfill leachate on selected growth parameters in two varieties (‘Bialobrzeskie’ and ‘Monoica’) of hemp ( Cannabis sativa L.) was studied to evaluate phytoremediation potential of these varieties. The plants were cultivated in hydroponic culture in Knop's nutrient solution. Landfill leachate was added to nutrient solution in concentrations of 10, 15, 20 and 40%, respectively. After 14 days of cultivation, selected parameters of above-ground organs and root system were determined in experimental plants, namely height of plants, dry weight of aerial parts, total leaf area, total length of the root system, dry weight of the root system and the content of photosynthetic pigments in leaves. The leachate application affected all the monitored parameters: the decrease in height of the plants, length of the root system, dry weight, total leaf area, and content of photosynthetic pigments were observed. While the 10% and 15% concentration of leachate often caused only a slight decrease in the monitored parameters, the 20% concentration dramatically affected all the observed characteristics. Concentration of 40% caused severe stunting and in some cases, even dying of experimental plants. The higher degree of tolerance in almost all parameters was observed in ‘Monoica’. This variety appears to be more suitable for landfill leachate treatment, but further research is needed, especially in terms of heavy metals accumulation in individual organs. According to our knowledge, this paper represents the first study on the use of hemp for treatment of landfill leachate. Two selected technical varieties of hemp ´Bialobrzeskie´ and ´Monoica´ with potential of heavy metals accumulation were tested in hydroponic culture as a potentially usable crops for treatment of landfill leachate. The optimal dilution of landfill leachate tolerated by plants of hemp was tested based on measurement of selected growth and physiological parameters. The tolerance of both varieties against landfill leachate was compared, the higher degree of tolerance has been proven in ´Monoica´ variety.

中文翻译：

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垃圾渗滤液对两种纤维大麻品种生长参数的影响

研究垃圾渗滤液对两种大麻品种（'Bialobrzeskie' 和'Monoica'）的选定生长参数的影响，以评估这些品种的植物修复潜力。植物在诺普营养液中以水培方式栽培。垃圾渗滤液分别以 10%、15%、20% 和 40% 的浓度添加到营养液中。培养14天后，确定实验植物地上器官和根系的选定参数，即株高、地上部分干重、总叶面积、根系总长、根系干重以及叶片中光合色素的含量。渗滤液的应用影响了所有监测参数：植物高度的减少、根系的长度、干重、观察总叶面积和光合色素含量。虽然 10% 和 15% 的渗滤液浓度通常只会导致监测参数略有下降，但 20% 的浓度会显着影响所有观察到的特性。40% 的浓度会导致严重的发育迟缓，在某些情况下甚至会导致实验植物死亡。在“莫诺卡”中观察到的几乎所有参数的容忍度都较高。该品种似乎更适合垃圾渗滤液处理，但还需要进一步研究，特别是在单个器官中重金属的积累方面。据我们所知，本文代表了首次使用大麻处理垃圾渗滤液的研究。在水培栽培中测试了两种具有重金属积累潜力的大麻技术品种“Bialobrzeskie”和“Monoica”，作为处理垃圾渗滤液的潜在可用作物。基于选定的生长和生理参数的测量，测试了大麻植物耐受的垃圾渗滤液的最佳稀释度。比较了两个品种对垃圾渗滤液的耐受性，已证明“莫诺卡”品种具有更高的耐受性。