AUTHOR=Mench Michel J. , Dellise Marie , Bes Clémence M. , Marchand Lilian , Kolbas Aliaksandr , Le Coustumer Philippe , Oustrière Nadège TITLE=Phytomanagement and Remediation of Cu-Contaminated Soils by High Yielding Crops at a Former Wood Preservation Site: Sunflower Biomass and Ionome JOURNAL=Frontiers in Ecology and Evolution VOLUME=6 YEAR=2018 URL=https://www.frontiersin.org/journals/ecology-and-evolution/articles/10.3389/fevo.2018.00123 DOI=10.3389/fevo.2018.00123 ISSN=2296-701X ABSTRACT=
This long-term field trial aimed at remediating a Cu-contaminated soil to promote crop production and soil functions at a former wood preservation site. Twenty-eight field plots with total topsoil Cu in the 198–1,169 mg kg−1 range were assessed. Twenty-four plots (OMDL) were amended in 2008 with a compost (made of pine bark chips and poultry manure, OM, 5% w/w) and dolomitic limestone (DL, 0.2%), and thereafter annually phytomanaged with a sunflower—tobacco crop rotation. In 2013, one untreated plot (UNT) was amended with a green waste compost (GW, 5%) whereas 12 former OMDL plots received a second compost dressing using this green waste compost (OM2DL, 5%). In 2011, one plot was amended with the Carmeuse basic slag (CAR, 1%) and another plot with a P-spiked Linz-Donawitz basic slag (PLD, 1%). Thus six soil treatments, i.e., UNT, OMDL, OM2DL, GW, CAR, and PLD, were cultivated in 2016 with sunflower (
- Compost incorporated into Cu-contaminated soils improves the sunflower growth. - Soil organic matter increases in compost-amended soils. - Extractable soil Cu decreases in compost-amended soils. - Shoot Cu removal by sunflower reaches 26–88 g Cu ha−1 year−1.