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Effects of High Nutrient Supply on the Growth of Seven Bamboo Species

Abstract : Over the last decade, bamboo has emerged as an interesting plant for the treatment of various polluted waters using plant-based wastewater treatment systems. In these systems, nitrogen and phosphorous concentrations in wastewater can exceed plant requirements and potentially limit plant growth. The effects of two nutrient rates on the growth of seven bamboo species were assessed in a one-year experiment: Dendrocalamus strictus, Thyrsostachys siamensis, Bambusa tuldoides, Gigantochloa wrayi, Bambusa oldhamii, Bambusa multiplex and Bambusa vulgaris. Nutrient rates were applied with a 20:20:20 NPK fertilizer as 2.6 and 13.2 t.ha.yr−1NPK to three-year-old bamboo planted in 70 L containers. Morphological characters, photosynthetic responses, and NPK content in bamboo tissues were investigated. Under high-nutrient supply rate, the main trend observed was an increase of culm production but the culms’ diameters were reduced. For the seven species, the aboveground biomass yield tended to increase with high-nutrient rate. Increasing in nutrient rates also improved the photosynthetic activity which is consistent with the increase of nitrogen and phosphorus contents measured in plant tissues. All the bamboo species tested appears suitable for wastewater treatment purposes, but the species Bambusa oldhamii and Gigantochloa wrayi showed the higher biomass yield and nutrient removal.
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Submitted on : Friday, August 28, 2015 - 3:06:00 PM
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Julien Piouceau, Grégory Bois, Frédéric Panfili, Matthieu Anastase, Laurent Dufossé, et al.. Effects of High Nutrient Supply on the Growth of Seven Bamboo Species. International Journal of Phytoremediation, Taylor & Francis, 2014, 16 (10), pp.1042--1057. ⟨10.1080/15226514.2013.810583⟩. ⟨hal-01188105⟩



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