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<p>Integrated production systems, like aquaponics systems, combine agriculture and aquaculture activities to promote sustainable practices. The present study assessed the growth of pink trumpet tree (<i>Handroanthus heptaphyllus</i>) seedlings in aquaponic systems with various planting trays and cell models alongside tambaqui (<i>Colossoma macropomum</i>) cultivation. Five aquaponic systems were set up with different treatments for pink trumpet tree growth using a tube tray, hydroponic cups, commercial seedling bags, polystyrene seedbeds, and açai seed substrate in the hydroponic beds. Water quality variables, fish growth performance, and pink trumpet tree growth were evaluated at the end of the experimental period. Regarding water quality, dissolved oxygen levels were significantly lower (<i>p</i> &lt; 0.05) in the açai seed substrate treatment (7.36 ± 0.06&#xa0;mg L⁻<sup>1</sup>) compared to the seedbed (7.62 ± 0.02&#xa0;mg L⁻<sup>1</sup>), hydroponic cup (7.65 ± 0.03&#xa0;mg L⁻<sup>1</sup>), and seedling bag (7.57 ± 0.03&#xa0;mg L⁻<sup>1</sup>) treatments. The different planting bed models did not significantly (<i>p</i> &gt; 0.05) impact tambaqui growth performance in pink trumpet tree. The polystyrene seedbed treatment showed a significant increase (<i>p</i> &lt; 0.05) in total length (81.65 ± 2.99&#xa0;cm), aerial part length (46.38 ± 1.54&#xa0;cm), and root length (35.26 ± 1.45&#xa0;cm) of the pink trumpet tree compared to other treatments. Total fresh mass was significantly higher (<i>p</i> &lt; 0.05) in the polystyrene seedbed treatment (7.59 ± 0.57&#xa0;g) compared to açai seed substrate (5.88 ± 0.46&#xa0;g), hydroponic cup (5.17 ± 0.34&#xa0;g), seedling bags (3.08 ± 0.42&#xa0;g) treatments, and the control group (0.83 ± 0.11&#xa0;g). Foliar area significantly decreased (<i>p</i> &lt; 0.05) in the seedling bags treatment and control group. Dickson indices were significantly higher (<i>p</i> &lt; 0.05) in the hydroponic cup treatment. The aquaponic system with tambaqui was effective in producing pink trumpet tree seedlings.</p> Graphical Abstract <p></p>

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Planting trays and cell models impact the growth of pink trumpet tree (Handroanthus heptaphyllus) seedlings in aquaponics systems with tambaqui (Colossoma macropomum)

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年7月8日

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  • Priscila Caroline Alves Lopes,
  • Fábio Carneiro Sterzelecki,
  • João Francisco Garcez Cabral Junior,
  • Bruna dos Santos Miranda,
  • Deyselana Lima da Costa,
  • Nuno Felipe Alves Correia De Melo,
  • Marco Shizuo Owatari,
  • Sávio Lucas de Matos Guerreiro,
  • Glauber David Almeida Palheta

摘要

Integrated production systems, like aquaponics systems, combine agriculture and aquaculture activities to promote sustainable practices. The present study assessed the growth of pink trumpet tree (Handroanthus heptaphyllus) seedlings in aquaponic systems with various planting trays and cell models alongside tambaqui (Colossoma macropomum) cultivation. Five aquaponic systems were set up with different treatments for pink trumpet tree growth using a tube tray, hydroponic cups, commercial seedling bags, polystyrene seedbeds, and açai seed substrate in the hydroponic beds. Water quality variables, fish growth performance, and pink trumpet tree growth were evaluated at the end of the experimental period. Regarding water quality, dissolved oxygen levels were significantly lower (p < 0.05) in the açai seed substrate treatment (7.36 ± 0.06 mg L⁻1) compared to the seedbed (7.62 ± 0.02 mg L⁻1), hydroponic cup (7.65 ± 0.03 mg L⁻1), and seedling bag (7.57 ± 0.03 mg L⁻1) treatments. The different planting bed models did not significantly (p > 0.05) impact tambaqui growth performance in pink trumpet tree. The polystyrene seedbed treatment showed a significant increase (p < 0.05) in total length (81.65 ± 2.99 cm), aerial part length (46.38 ± 1.54 cm), and root length (35.26 ± 1.45 cm) of the pink trumpet tree compared to other treatments. Total fresh mass was significantly higher (p < 0.05) in the polystyrene seedbed treatment (7.59 ± 0.57 g) compared to açai seed substrate (5.88 ± 0.46 g), hydroponic cup (5.17 ± 0.34 g), seedling bags (3.08 ± 0.42 g) treatments, and the control group (0.83 ± 0.11 g). Foliar area significantly decreased (p < 0.05) in the seedling bags treatment and control group. Dickson indices were significantly higher (p < 0.05) in the hydroponic cup treatment. The aquaponic system with tambaqui was effective in producing pink trumpet tree seedlings.

Graphical Abstract