ISSN 2756-3367
African Journal of Ecology and Ecosystems ISSN 2756-3367 Vol. 12 (6), pp. 001-008, June, 2025. Available online at www.internationalscholarsjournals.org © International Scholars Journals
Full Length Research Paper
Phosphorus Mobilization in Acid Soil: The Role of Humic Compounds and Phosphate-Solubilizing Bacteria
Sugeng Winarso1,2*, Didik Sulistyanto1 and Eko Handayanto2
1Department of Soil Science, Faculty of Agriculture, Jember University, Jember, Indonesia.
2Department of Soil Science, Faculty of Agriculture, Brawijaya University, Malang, Indonesia.
Accepted 003 May, 2025
This study aims at elucidating the combined effects of humic compounds and phosphate-solubilizing bacteria (Pseudomonas putida) to improve characteristics of ultisol and to increase the yields of soybean conducted in a glasshouse. The humic compounds are extracted from rice-straw compost, the phosphate-solubilizing bacteria obtained from Bogor Agricultural University, and the soil (Typic paleudult) collected from Kentrong Banten, Indonesia. The results have shown that application of humic compounds combined with inoculation of phosphate-solubilizing bacteria increases pH and available P, and decreases exchangeable Al of an ultisol. The improved soil characteristic, however, does not lead to the significant differences in the uptake of macronutrients by plant.
Key words: Acid soil, exchangeable aluminium, humic compounds, Pseudomonas putida, soybean.