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| Content Provider | frontiers |
|---|---|
| Author | Thijs, Sofie Witters, Nele Janssen, Jolien Ruttens, Ann Weyens, Nele Herzig, Rolf Mench, Michel Van Slycken, Stijn Meers, Erik Meiresonne, Linda Vangronsveld, Jaco |
| Abstract | Phytoextraction could be a potential management option for diffusely Cd-Zn-Pb-polluted agricultural land in Northeast Belgium. The use of high yielding crops with a sufficiently high metal accumulation is preferred as these are expected to both gradually decontaminate the soil while generating an income through biomass valorisation. To find out which high biomass crop possessed the highest and most constant (in time) phytoextraction potential on these soils, different plant species and different mutants or clones of each species, were evaluated during consecutive years. Biomass production and metal accumulation of pre-selected tobacco somaclonal variants (Nicotiana tabacum L.) and pre-selected sunflower mutants (Helianthus annuus L.) were investigated for two productivity years, while the phytoextraction potential of experimental poplar (Populus) and willow (Salix) in short rotation coppice (SRC) was assessed at the end of the second cutting cycle (after 2 times 4 growing seasons). The tobacco clones and the sunflower mutants showed efficient extraction of respectively Cd and Zn, while the highest simultaneous extractions of Cd and Zn were gained with some SRC clones. Variation in biomass production and metal accumulation were high for all crops over the years. The highest biomass production was observed for the experimental poplar clone of the crossing type Populus deltoides (P. maximowiczii x P. trichocarpa) with 9.9 ton DW per ha per year. The remediation period to reach legal threshold values for the pseudo-total content of Cd in this specific soil was estimated to be at least 60 years. Combining estimated phytoextraction potential and economic and environmental aspects, the SRC option is proposed as the most suitable crop for implementing metal phytoextraction in the investigated area. |
| ISSN | 1664462X |
| DOI | 10.3389/fpls.2018.01879 |
| Volume Number | 9 |
| Journal | Frontiers in Plant Science |
| Language | English |
| Publisher Date | 2018-12-21 |
| Access Restriction | Open |
| Subject Keyword | Sunflower Tobacco Phytoextraction Zinc Short rotation coppice Cadmium Lead Metal |
| Content Type | Text |
| Resource Type | Article |
| Subject | Plant Science |
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