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Bamboo Plantations for Phytoremediation of Pig Slurry: Plant Response and Nutrient Uptake

Abstract : On Réunion Island, a French overseas territory located in the western Indian Ocean, increasing pig livestock farming is generating large quantities of slurry. Most of it is spread on a little agricultural land due to the insular context. Considering the limitation of the quantities that can be spread on agricultural areas (European “Nitrate Directive” 91/676/EEC), the use of wastewater treatment systems using phytoremediation principles is an attractive option for the pig slurry treatment. A wastewater treatment system using bamboo groves was assessed for the pig slurry treatment. Three field plots were designed on an agricultural area and planted with 40 bamboo clumps on each plot. A total of 67 m3 of pig slurry was spread on two plots in two forms: raw slurry and centrifuged slurry. The latter plot was watered with tap water. The total amount of nitrogen, phosphorus and potassium was 5.3, 1.4 and 5.5 t·ha−1, respectively, for the raw slurry treatment and 4.2, 0.4 and 5.1 t·ha−1, respectively, for the centrifuged slurry treatment. The response of bamboo species to pig slurry application was determined using morphologic parameters, Chlorophyll a fluorescence measurements and biomass yield. Compared to the control, the biomass increased by 1.8 to 6 times, depending on the species and the form of slurry. Depending on the species, the average biomass ranged from 52 to 135 t.DM.ha−1 in two years of experiment.
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Submitted on : Thursday, May 14, 2020 - 2:26:07 PM
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Julien Piouceau, Frédéric Panfili, Grégory Bois, Matthieu Anastase, Frédéric Feder, et al.. Bamboo Plantations for Phytoremediation of Pig Slurry: Plant Response and Nutrient Uptake. Plants, MDPI, 2020, 9 (4), ⟨10.3390/plants9040522⟩. ⟨hal-02563490⟩



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