Abilities of phosphate solubilizing bacteria isolated from sandy soils under rubber tree plantations of different ages in Northeast Thailand

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Published: Feb 16, 2018
DOI: https://doi.org/10.14456/apst.2016.11
Keywords:
Bacteria Phosphate Solubilization Rubber sandy soil

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Kiriya Sungthongwises
Department of Plant Science and Agricultural Resources, Faculty of Agriculture, Khon Kaen University, Khon Kaen, Thailand
Sukanya Taweekij
Land Development Department, Land development office region 5, Land Development Department, Ministry of Agriculture and Coorperative, Khon Kaen , Thailand

Abstract

In order to understand the impact of land use and the change which occurs within ecosystem services in rubber plantations, we must address the absence of knowledge on the influence of agricultural practices over biological processes within the soil. This study describes the results of phosphate solubilizing bacteria (PSB) isolated from soil from different ages of rubber tree plantations in Northeast Thailand; where soils are mainly sandy, and retain a P deficiency. PSB isolates were tested using different P sources [Tri-calcium Phosphate (Ca3(PO4)2) and Ferric Phosphate (FePO4)] on specific culture media [National Botanical Research Institute Phosphate Growth Medium, (NBRIP)] under controlled conditions. Our results indicate that PSB isolated from rubber trees of different ages (5, 11, and 22 years) solubilized significantly higher amounts (P 0.01) of FePO4 (601.45-631.63 mgP/L) and Ca3(PO4)2 (319.24-597.85 mgP/L). The highest activity of solubilization was achieved in FePO4, which is the main form of insoluble phosphates in acidic sandy soil. Indole acetic acid (IAA) production was also observed in different ages and locations of the rubber plantations. These results provide essential information for the influence of soil fertility within Thailand’s rubber plantations.

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How to Cite
Sungthongwises, K., & Taweekij, S. (2018). Abilities of phosphate solubilizing bacteria isolated from sandy soils under rubber tree plantations of different ages in Northeast Thailand. Asia-Pacific Journal of Science and Technology, 21(4), APST–21. https://doi.org/10.14456/apst.2016.11
Issue
Vol. 21 No. 4 (2016): December
Section
Research Articles

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