Effects of different doses of a Bacillus-based inoculant on açaí palm seedlings

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Abstract
The production of seedlings with adequate shoot and root development is essential for the success of commercial cultivation systems. Bacteria of the genus Bacillus, capable of phosphate solubilization, have been widely studied for their potential to increase nutrient availability to plants. This study aimed to evaluate the effects of applying different doses of the Bacillus-based commercial biofertilizer Biomaphos® on the growth of açaí seedlings (Euterpe precatoria). The experiment was conducted in a greenhouse under a completely randomized design, with ten replicates and four treatments: a control (without inoculation) and three doses of the Biomaphos® inoculant (4, 12, and 16 × 108 CFU mL−1). 150 days after inoculation, shoot and root system variables were evaluated. The application of the biofertilizer promoted increases in shoot variables, except for plant height, and enhanced root volume, surface area, and dry mass, with a linear reduction in root diameter. The results indicate that Biomaphos® promotes the growth of açaí seedlings under controlled conditions.
Funding Information
  • INCT (408267/2024-0)
  • INCT (88887.691688/2022-01)
  • INCT (88881.344324/2026-01)
  • INCT (308426/2022-3)
  • INCT (01.02.016301.04036/2022-10)
  • INCT (017/2024)
  • CAPES (408267/2024-0)
  • CAPES (88887.691688/2022-01)
  • CAPES (88881.344324/2026-01)
  • CAPES (308426/2022-3)
  • CAPES (01.02.016301.04036/2022-10)
  • CAPES (017/2024)
  • PROAP/CAPES (408267/2024-0)
  • PROAP/CAPES (88887.691688/2022-01)
  • PROAP/CAPES (88881.344324/2026-01)
  • PROAP/CAPES (308426/2022-3)
  • PROAP/CAPES (01.02.016301.04036/2022-10)
  • PROAP/CAPES (017/2024)
  • CNPq (408267/2024-0)
  • CNPq (88887.691688/2022-01)
  • CNPq (88881.344324/2026-01)
  • CNPq (308426/2022-3)
  • CNPq (01.02.016301.04036/2022-10)
  • CNPq (017/2024)
  • Fundação de Amparo à Pesquisa do Estado do Amazonas (408267/2024-0)
  • Fundação de Amparo à Pesquisa do Estado do Amazonas (88887.691688/2022-01)
  • Fundação de Amparo à Pesquisa do Estado do Amazonas (88881.344324/2026-01)
  • Fundação de Amparo à Pesquisa do Estado do Amazonas (308426/2022-3)
  • Fundação de Amparo à Pesquisa do Estado do Amazonas (01.02.016301.04036/2022-10)
  • Fundação de Amparo à Pesquisa do Estado do Amazonas (017/2024)
  • DIVULGA CT&I/FAPEAM (408267/2024-0)
  • DIVULGA CT&I/FAPEAM (88887.691688/2022-01)
  • DIVULGA CT&I/FAPEAM (88881.344324/2026-01)
  • DIVULGA CT&I/FAPEAM (308426/2022-3)
  • DIVULGA CT&I/FAPEAM (01.02.016301.04036/2022-10)
  • DIVULGA CT&I/FAPEAM (017/2024)

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