Development of a New Biofertilizer with a High Capacity for N2 Fixation, Phosphate and Potassium Solubilization and Auxin Production

Chaveevan LEAUNGVUTIVIROJ; Pimtida RUANGPHISARN; Pikul HANSANIMITKUL; Hidenori SHINKAWA; Ken SASAKI

doi:10.1271/bbb.90898

Microbiology & Fermentation Technology Notes

Development of a New Biofertilizer with a High Capacity for N₂ Fixation, Phosphate and Potassium Solubilization and Auxin Production

Chaveevan LEAUNGVUTIVIROJ, Pimtida RUANGPHISARN, Pikul HANSANIMITKUL, Hidenori SHINKAWA, Ken SASAKI

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Keywords: biofertilizer, plant growth, auxin production, nitrogen fixation, P and K solubilization

JOURNAL FREE ACCESS

2010 Volume 74 Issue 5 Pages 1098-1101

DOI https://doi.org/10.1271/bbb.90898

View "Advance Publication" version (May 7, 2010).

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Abstract

Biofertilizers that possess a high capacity for N₂ fixation (Azotobacter tropicalis), and consist of phosphate solubilizing bacteria (Burkhoderia unamae), and potassium solubilizing bacteria (Bacillus subtilis) and produce auxin (KJB9/2 strain), have a high potential for growth and yield enhancement of corn and vegetables (Chinese kale). For vegetables, the addition of biofertilizer alone enhanced growth 4 times. Moreover, an enhancement of growth by 7 times was observed due to the addition of rock phosphate and K-feldspar, natural mineral fertilizers, in combination with the biofertilizer.

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