Algal blooms in eutrophic water bodies are controlled by inputs of phosphorus (P) as the growth-limiting nutrient. Runoff particulate P associated with soil from fields often predominates among P fractions. Here, an algal bioassay to investigate the potential bioavailability of particulate P in soil collected from a citrus orchard was conducted. Microcystis aeruginosa was cultured in medium containing soil as the sole source of P. The P in the soil was not notably solubilized after autoclaving. Analyses of chlorophyll-a, suspended solids, particulate organic carbon, and particulate organic nitrogen showed that M. aeruginosa could utilize some of the P present in the soil, perhaps that in particulate form, but this form of P was not sufficient to maintain optimum growth.
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Research Article| March 01 2011
Potential bioavailability of phosphorus in citrus orchard soil to Microcystis aeruginosa
Water Sci Technol (2011) 63 (6): 1298–1302.
Y. Okubo, T. Inoue, K. Yokota, K. Tsushima; Potential bioavailability of phosphorus in citrus orchard soil to Microcystis aeruginosa. Water Sci Technol 1 March 2011; 63 (6): 1298–1302. doi: https://doi.org/10.2166/wst.2011.374
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