The Soil Microbial Biomass: Concept, Measurement and Applications in Soil Ecosystem Research.
-
- Brookes Philip
- Agriculture and Environment Division, IACR-Rothamsted Experimental Station
書誌事項
- タイトル別名
-
- Soil Microbial Biomass Concept Measurement and Applications in Soil Ecosystem Research
この論文をさがす
抄録
For many purposes the soil micro-organisms can be considered as a single pool of living soil organic matter (the soil microbial biomass). Current methods to measure the microbial biomass are described and their merits and demerits discussed. The concept of the microbial biomass as a living soil organic matter pool is illustrated by reference to it as a labile reservoir of potentially plant-available nutrients. An estimate of the turnover times of biomass carbon (C) of 0.94 years and of biomass phosphorus (P) of 0.39 years shows that the turnover rates of nutrients within the biomass may be quite different. An understanding of the dynamics of biomass P is important. The lack of P availability in many tropical agricultural soils has been described as `the bottle-neck of world hunger'. Even if P is supplied it may be rapidly and irreversibly fixed in these, usually, strongly P-fixing soils. By adding small rates of animal manures with the fertilizer, more biomass P is formed. During the process of biomass turnover, this P may be released slowly and taken up by the crop more efficiently. Thus, in a Kenyan P-fixing soil, crop yields were much larger when both manure and fertilizer P were given than when either were applied singly.
収録刊行物
-
- Microbes and environments
-
Microbes and environments 16 (3), 131-140, 2001
日本微生物生態学会 / 日本土壌微生物学会 / Taiwan Society of Microbial Ecology / 植物微生物研究会 / 極限環境微生物学会
- Tweet
詳細情報 詳細情報について
-
- CRID
- 1390001204345811328
-
- NII論文ID
- 110001271029
-
- NII書誌ID
- AA11551577
-
- ISSN
- 13474405
- 13426311
-
- NDL書誌ID
- 5928748
-
- 本文言語コード
- en
-
- データソース種別
-
- JaLC
- NDL
- Crossref
- CiNii Articles
-
- 抄録ライセンスフラグ
- 使用不可