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Updated: Aug 17, 2026

Measuring Phosphorus Release in Laboratory Microcosms for Water Quality Assessment
Published on: July 22, 2019
[Phosphatase activities in rice-planting meadow brown soil and their responses to fertilization]
Jupei Shen1, Zhenhua Chen, Lijun Chen
1Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China. shenjupei@sohu.com
Abstract:
This study is aimed to investigate the activities of phosphomonoesterase (acid-, neutral-, and alkaline-), phosphodiesterase and phosphotriesterase in a rice-planting meadow brown soil at the lower reach of Liao River, and their responses to different fertilization treatments. The results showed that there was no significant difference in soil total P and organic P contents among all treatments, but soil available P content was significantly higher in treatment OM than in other treatments. Soil acid-and neutral phosphomonoesterase had a higher activity than alkaline phosphomonoesterase and phosphodiesterase, while phosphotriesterase had the lowest activity. No significant difference was found in phosphatase activities between different fertilization treatments. Soil acid phosphomonoesterase activity had a significant correlation with soil total P and available P contents, while soil phosphodiesterase activity significantly correlated with soil organic P content.
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