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Measurement of microbial biomass phosphorus in soil
Open accessAbstract
A method for measuring the amount of P held in soil micro-organisms (biomass P) is described and the assumptions on which it is based are discussed. Biomass P is calculated from the difference between the amount of inorganic P (P i ) extracted by 0.5 (Spm) NaHCO 3 (pH 8.5) from fresh soil fumigated with CHCl 3 and the amount extracted from unfumigated soil. Some CHCl 3 -released P i is sorbed by soil during fumigation and extraction: an approximate allowance for this is made by incorporating a known quantity of P i during extraction and correcting for recovery. Most of the P released is in inorganic form and the proportion increases with duration of fumigation. Non-microbial P is little, if at all, affected by fumigation. Microbial biomass P is calculated from CHCl 3 -released P i by dividing by 0.4, i.e. by assuming that 40% of the P in the biomass is rendered extractable as P i by CHCl 3 . Measurements of biomass P must be done in fresh soil, CHCl 3 releases much less P in air-dry soil.
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Citations
Cited by
C:N:P stoichiometry in soil: is there a “Redfield ratio” for the microbial biomass?
Cleveland, C. C., & Liptzin, D. (2007) · Biogeochemistry · doi:10.1007/s10533-007-9132-0 · Cited by 2,365
Impact of agricultural inputs on soil organisms - a review
Bünemann, E. K., Schwenke, G. D., & Van Zwieten, L. (2006) · Soil Research · doi:10.1071/sr05125 · Cited by 521
Wei, X., Hu, Y., Razavi, B. S., Zhou, J., Shen, J., Nannipieri, P., Wu, J., & Ge, T. (2019) · Soil Biology and Biochemistry · doi:10.1016/j.soilbio.2018.12.025 · Cited by 336
(2002) · Tropical Ecology · Cited by 77
Metadata
- Authors
- Brookes, P. C., Powlson, D. S., & Jenkinson, D. S.
- Venue
- Soil Biology and Biochemistry
- Publisher
- Elsevier BV
- Published
- 1982-01
- Volume
- 14
- Issue
- 4
- Pages
- 319-329
- ISSN
- 0038-0717 (ISSN-L)
- OpenAlex
- W1976189213
- Cited by
- 1,844
- References
- 0
- FWCI
- 25.34
- Type
- journal article
- Language
- en
- Open access
- hybrid
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- CoChat. (2026). Citation check: Measurement of microbial biomass phosphorus in soil. https://app.cochat.ai/papers/10.1016/0038-0717(82)90001-3
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- Brookes, P. C., Powlson, D. S., & Jenkinson, D. S. (1982). Measurement of microbial biomass phosphorus in soil. Soil Biology and Biochemistry. https://doi.org/10.1016/0038-0717(82)90001-3
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