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@INPROCEEDINGS{Jablonowski:1047015,
      author       = {Jablonowski, Nicolai David and Valle, Stella F and Ribeiro,
                      Lucas da Silva and Borges, Roger and Soares Giroto, Amanda
                      and Lendzion Alves, Bruna and Ribeiro de Oliveira, Caue},
      title        = {{B}iofertilizer based on {A}spergillus niger and
                      {A}cidithiobacillus thiooxidans to enhance phosphorus and
                      sulfur availability in soil},
      reportid     = {FZJ-2025-04071},
      year         = {2025},
      abstract     = {Intensive fertilization has become necessary to supply
                      nutrients for plant growth under current agricultural
                      practices aimed at meeting global food demands.
                      Macronutrients such as phosphorus and sulfur are essential
                      for the plant growth cycle and, consequently, for improving
                      productivity. Struvite (MgNH₄PO₄·6H₂O) is a valuable
                      phosphorus source that can even be recycled from wastewater;
                      however, it typically exhibits low solubility. Similarly,
                      elemental sulfur (S⁰) offers a high-concentration source
                      of sulfate, but its availability is constrained by the
                      soil’s capacity to support microbial S⁰ oxidation [1].
                      In this study, we propose the integration of these nutrients
                      into a composite material based on a biodegradable starch
                      matrix. This matrix enables the encapsulation of acidifying
                      agents, including Aspergillus niger, associated with the
                      carbon cycle, and Acidithiobacillus thiooxidans, associated
                      with the sulfur cycle—both of which are native soil
                      microorganisms. This strategy effectively enhanced nutrient
                      solubility, with the starch/S⁰/phosphorus biofertilizer
                      composite showing promising results in soil incubation
                      experiments. These findings contribute to the advancement of
                      environmentally friendly fertilizers and support the
                      development of more sustainable agricultural practices.
                      Additionally, this approach may open new avenues for the use
                      of low-solubility nutrient sources in future fertilizer
                      formulations.},
      month         = {Sep},
      date          = {2025-09-28},
      organization  = {XXIII B-MRS Meeting, Salvador
                       (Brazil), 28 Sep 2025 - 2 Oct 2025},
      subtyp        = {After Call},
      cin          = {IBG-2},
      cid          = {I:(DE-Juel1)IBG-2-20101118},
      pnm          = {2171 - Biological and environmental resources for
                      sustainable use (POF4-217)},
      pid          = {G:(DE-HGF)POF4-2171},
      typ          = {PUB:(DE-HGF)24},
      doi          = {10.34734/FZJ-2025-04071},
      url          = {https://juser.fz-juelich.de/record/1047015},
}