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All Journal JURNAL SAINS PERTANIAN EQUATOR
Belo, Andreas Nobertus
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences Economics, Econometrics & Finance Environmental Science

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Journal : JURNAL SAINS PERTANIAN EQUATOR

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POTENTIAL STUDY OF PHOSPHATE-SOLUBILIZING BACTERIA UNDER DIFFERENT LAND USE IN KAYU TANAM VILAGE, MANDOR DISTRICT, LANDAK REGENCY Belo, Andreas Nobertus; Nusantara, Rossie Wiedya; Gafur, Sutarman
Jurnal Sains Pertanian Equator Vol 15, No 2: In Press
Publisher : Fakultas Pertanian Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jspe.v15i2.97469

Abstract

Ultisol drylands in West Kalimantan generally have low pH and high concentrations of Al and Fe ions, resulting in phosphorus (P) being less available to plants. Phosphorus is an essential nutrient that supports plant growth and increases crop yield. Phosphorus bound to Al and Fe can be released through the activity of phosphate-solubilizing bacteria (PSB). The presence of PSB is influenced by various factors, including differences in land use. This study aimed to assess the potential and population of PSB under different land uses in Kayu Tanam Village, Mandor District, Landak Regency. The research was conducted from February to April 2025, with analyses carried out at the Soil Biology and Biotechnology Laboratory, Soil Physics Laboratory, and Soil Chemistry and Fertility Laboratory, Faculty of Agriculture, Tanjungpura University. Soil samples were collected from five points arranged diagonally at each site, with 50 m spacing and a depth of 0"“20 cm. Observed parameters included population, potential, and characterization of PSB, soil pH, organic C, available P, total N, C/N ratio, bulk density, soil moisture, and soil temperature. The highest PSB population was found in maize fields (54.60 × 10⁶ CFU/g) with 22 PSB characters. The highest solubilization ability was recorded in isolate Sp22 from secondary forest (solubilization index 7.75), while the lowest was isolate Sp9 from oil palm plantation (index 1.00).
Co-Authors Rossie Wiedya Nusantara Sutarman Gafur