title: Potential bioavailability of phosphorus in citrus orchard soil to Microcystis aeruginosa.
abstract: 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.
authors: Department of Architecture and Civil Engineering, Graduate School of Engineering, Toyohashi University of Technology, Toyohashi, Aichi 441-8580, Japan.
authors: Y
authors: Y
authors: Okubo
authors: T
authors: T
authors: Inoue
authors: K
authors: K
authors: Yokota
authors: K
authors: K
authors: Tsushima
mesh_terms: D000383:Agriculture; D002957:Citrus; D007564:Japan; D046931:Microcystis / Q000378:metabolism*; D010758:Phosphorus / Q000737:chemistry / Q000378:metabolism*; D045483:Rivers; D012987:Soil / Q000737:chemistry*
chemical_list: D012987:Soil; D010758:Phosphorus