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SUMMARY:Dried Duckweed Biomass as a Boron-Binding Soil Amendment Produced 
 through Nutrient Recovery from Agricultural Drainage Water
DTSTART;VALUE=DATE-TIME:20261001T130000Z
DTEND;VALUE=DATE-TIME:20261001T131500Z
DTSTAMP;VALUE=DATE-TIME:20260915T211937Z
UID:indico-contribution-2932@cern.ch
DESCRIPTION:Speakers: Umit Baris Kutman (Institute of Biotechnology\, Gebz
 e Technical University)\nAgricultural drainage waters contain recoverable 
 plant nutrients but may contribute to eutrophication when discharged untre
 ated. This study evaluated Lemna minor for nutrient recovery from agricult
 ural drainage water and\, more importantly\, investigated the unexplored p
 otential of its dried biomass to bind boron (B) in soil and mitigate B tox
 icity in a crop plant. Duckweed was cultivated in drainage water from a so
 illess tomato greenhouse and a vertical farm\, with nutrient solution as a
  reference. Nutrient removal and mineral accumulation were determined. The
  resulting dried biomass was assessed (i) in water\, (ii) during a 90-day 
 soil incubation\, and (iii) in a cucumber seedling experiment under increa
 sing B supply.\n\nLemna minor grew successfully in both drainage waters an
 d substantially depleted nitrate and phosphorus while accumulating macro- 
 and micronutrients\, including B. Incorporation of dried duckweed into soi
 l at 0.5% (w/w) markedly reduced hot-water-extractable B\, and this effect
  persisted throughout incubation. At soil-relevant pH\, the biomass releas
 ed B into B-free water but bound more than half of the B in B-enriched wat
 er\, indicating bidirectional buffering capacity. Duckweed amendment incre
 ased cucumber shoot biomass across all B levels and prevented visible B-to
 xicity symptoms at the highest B treatment.\n\nAlthough the high B-accumul
 ation capacity of living Lemna and the involvement of cell-wall apiogalact
 uronan are known\, this is\, to our knowledge\, the first demonstration th
 at mineral-rich\, dried Lemna biomass retains B-binding functionality in s
 oil and can mitigate B toxicity during crop growth. Thus\, agricultural wa
 stewater treatment and nutrient recovery generate a multifunctional soil a
 mendment within a circular agricultural system.\n\nhttps://indico.unina.it
 /event/117/contributions/2932/
LOCATION:Department of Agricultural Sciences of the University of Napoli F
 ederico II\, Portici\, Italy Sala Cinese
URL:https://indico.unina.it/event/117/contributions/2932/
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